Imaizumi, F., Matsuoka, N., Hayakawa, Y.S., Samikshya, D., Stoffel, M. (2025) Linkages between abundant rockfall and debris-flow activity at Täschgufer, Swiss Alps. Geomorphology. https://doi.org/10.1016/j.geomorph.2025.110009
Zulhilmi, A., Hayakawa, Y.S., Newman, D.R. (2025.08) Usability and motivational impact of a fast-paced immersive virtual-reality lecture on international middle-school students in geoscience education. Geoscience Communication, 8, 197–211. https://doi.org/10.5194/gc-8-197-2025
Newman, D.R., Hayakawa, Y.S. (2025.06) Robust land-surface parameterisation for repeated topographic surveys in dynamic environments with adaptive state-space models. Remote Sensing, 17 (12), 1993. https://doi.org/10.3390/rs17121993
Newman, D.R., Hayakawa, Y.S., Kato, A., Kasai, M., Iizuka, K. (2025.05) Estimating three-dimensional motion of a creeping landslide from topographic data and associated land surface parameters. Earth Surface Processes and Landforms, 50 (6), e70071. https://doi.org/10.1002/esp.70071
Hayakawa, Y.S., Gomez, C., Watanabe, T., Wang, T., Kobayashi, Y., Inomata, M., Sakai, T., Imagawa, S. (2025.04) Effects of ground-contacting gear on trail surface deformation from trampling. Environmental Challenges, 18, 101107. https://doi.org/10.1016/j.envc.2025.101107
Yousefi, S., Imaizumi, F., Hasui, R., Nishii, R., Hayakawa, Y.S. (2025.04) Quantitative analysis of landslide impact on vegetation: Insights from field surveys and UAV imagery. Ecological Engineering, 214, 107581. https://doi.org/10.1016/j.ecoleng.2025.107581
Adams, L.B., Hayakawa, Y.S. (2025.03) Mapping alluvial mine dynamics in the Atewa landscape in Ghana using Geographic Object-Based Image Analysis (GEOBIA) and GIS. Environmental Monitoring and Assessment, 197, 473. https://doi.org/10.1007/s10661-025-13892-z
Odaka, T., Maeda, O., Miki, T., Hayakawa, Y.S., Itahashi, Y., Oda, M., Salih, R., Hama Gharib, H. (2025.03) Halaf and Late Chalcolithic occupations at Shakar Tepe in the Shahrizor Plain, Iraqi Kurdistan: Preliminary report of the 2023 excavations. Archaeological Research in Asia, 41, 100592. https://doi.org/10.1016/j.ara.2025.100592
Zulhilmi, A., Hayakawa, Y.S. (2025.01) Immersive virtual reality fieldwork investigation of a landslide in Hokkaido, Japan. Environmental Earth Sciences, 84, 21. https://doi.org/10.1007/s12665-024-12013-2
Tsunetaka, H., Hotta, N., Imaizumi, F., Hayakawa, Y.S. (2024.11) Debris-flow fan channel avulsions: An important secondary erosional process along the Ichino-sawa torrent, Japan. Earth Surface Processes and Landforms, 49 (14), 4759-4775. https://doi.org/10.1002/esp.5994
Meng, Y., Watanabe, T., Hayakawa, Y.S., Sawada, Y., Wang, T. (2024.09) Mapping earth hummocks in Daisetsuzan National Park in Japan using UAV-SfM framework. Remote Sensing, 16 (19), 3610. https://doi.org/10.3390/rs16193610
Yamauchi, H., Oguchi, T., Iizuka, K., Hayakawa, Y.S., Seto, T. (2024.05) Evaluation of GIScience exercise using online educational materials for Japanese university students. The Professional Geographer, 76 (4), 490–503. https://doi.org/10.1080/00330124.2024.2341062
Faisal, B.M.R., Hayakawa, Y.S. (2024.03) Topographical dynamics based on global and UAV-SfM derived DEM products: A case study of transboundary Teesta River, Bangladesh. Geografiska Annaler: Series A, Physical Geography, 1–23. https://doi.org/10.1080/04353676.2024.2323347 [OA@HUSCAP]
Zeng, T., Wu, L., Hayakawa, Y.S., Yin, K., Gui, L., Jin, B., Guo, Z., Peduto, D. (2024.03) Advanced integration of ensemble learning and MT-InSAR for enhanced slow-moving landslide susceptibility zoning. Engineering Geology, 331, 107436. https://doi.org/10.1016/j.enggeo.2024.107436.
Zeng, T., Wu, L., Peduto, D., Glade, T., Hayakawa, Y.S., Yin, K. (2023.11) Ensemble learning framework for landslide susceptibility mapping: Different basic classifier and ensemble strategy. Geoscience Frontiers, 14 (6), 101645. https://doi.org/10.1016/j.gsf.2023.101645
Lo, T.L.W., Hayakawa, Y.S., Nakata, Y., Hayamizu, M., Ogura, T. (2023.05) Changes in morphological characteristics of drainage basins following coseismic landslides by the 2018 Hokkaido Eastern Iburi Earthquake. Geographical Studies, 98 (1). https://doi.org/10.7886/hgs.98.9
Faisal, B.M.R., Hayakawa, Y.S. (2023.05) Geomorphometric characterization and sediment connectivity of the middle Brahmaputra River basin. Geomorphology, 429, 108665. https://doi.org/10.1016/j.geomorph.2023.108665 [OA@HUSCUP]
早川裕弌 (2023.01) 地形情報の種類と特徴. In: 公益社団法人日本地理学会（編）地理学事典, 丸善出版, 190-191. [ Hayakawa, Y.S. (2023.01) Type and characteristics of topographic data. In: Association of Japanese Geographers (ed.), Geography Dictionary, Maruzen Publishing, 190-191. (in Japanese) ]
Faisal, B.M.R., Hayakawa, Y.S. (2022.07) Geomorphological processes and their connectivity in hillslope, fluvial, and coastal areas in Bangladesh: A review. Progress in Earth and Planetary Science, 9, 41. https://doi.org/10.1186/s40645-022-00500-8
堀田耕平・楠本成寿・高橋秀徳・早川裕弌 (2022.07) 立山火山地獄谷における水準測量（2015〜2021年）. 月刊地球, 44 (7), 318-324. [ Hotta, K., Kusumoto, S., Takahashi, H., Hayakawa, Y.S. (2022.07) Leveling survey in Jigokudani valley, Tateyama volcano (2015~2021). Chikyu Monthly, 44 (7), 318-324. (in Japanese) ]
山内啓之・鶴岡謙一・小倉拓郎・田村裕彦・早川裕弌・飯塚浩太郎・小口 高 (2022.05) 三次元地理空間情報とVR技術を用いた遺構の散策アプリの試作と評価－地理教育への応用に向けて－．E-journal GEO, 17 (1), 169-179. https://doi.org/10.4157/ejgeo.17.169 [ Yamauchi, H., Tsuruoka, K., Ogura, T., Tamura, Y., Hayakawa, Y.S., Iizuka, K., Oguchi, T. (2022.05) Development and evaluation of an application for exploring historical sites using three-dimensional geospatial data and virtual reality technology: A contribution to geography education. E-journal GEO, 17 (1), 169-179. https://doi.org/10.4157/ejgeo.17.169 ]
早川裕弌 (2022.05) キュルテペ遺跡の立地と自然地理的背景．西アジア考古学, 23, 127-135. [ Hayakawa, Y.S. (2022.05) Physical geography and environmental conditions around Kültepe. Journal of West Asian Archaeology, 23, 127-135. (in Japanese with English abstract) ]
Oguchi, T., Wasklewicz, T., Hayakawa, Y.S. (2022.03) Remote data in fluvial geomorphology: characteristics and applications. In: Shroder, J. (ed.) Treatise on Geomorphology (Second Edition) Volume 6.2: Fluvial Geomorphology Part II. Academic Press, Elsevier, 1116-1142. https://doi.org/10.1016/B978-0-12-818234-5.00103-6
Hotta, K., Kusumoto, S., Takahashi, H., Hayakawa, Y.S. (2022.02) Deformation source revealed from leveling survey in Jigokudani valley, Tateyama volcano, Japan. Earth, Planets and Space, 74, 32. https://doi.org/10.1186/s40623-022-01593-7
Dornik, A., Drăguţ, L., Oguchi, T., Hayakawa, Y., Micu, M. (2022.02) Influence of sampling design on landslide susceptibility modeling in lithologically heterogeneous areas. Scientific Reports, 12, 2106. https://doi.org/10.1038/s41598-022-06257-w
小花和宏之・早川裕弌・坂上清一 (2021.09) RTK-UAV 測量において3 次元モデルのDoming を低減する方法－GCP を使用せずにcm レベルの精度を実現する撮影・データ処理－. システム農学, 37 (2), 29-38. https://doi.org/10.14962/jass.37.2_29 [ Obanawa, H., Hayakawa, Y.S., Sakanoue, S. (2021.09) How to reduce doming without GCPs in RTK-UAV surveys? –Photographing and data processing that achieves cm-level accuracy–. Journal of the Japanese Agricultural Systems Society, 37 (2), 29-38. https://doi.org/10.14962/jass.37.2_29 ]
加藤 顕・三浦朋恵・蝦名益仁・早川裕弌 (2021.08) i-Treeでの樹木測定項目を用いた森林火災の評価. 日本緑化工学会誌, 47 (1), 93-98. https://doi.org/10.7211/jjsrt.47.93 [ Kato, A., Miura, T., Ebina, M., Hayakawa, Y. (2021.08) Evaluating forest fires using tree parameters collected by i-Tree. Journal of the Japanese Society of Revegetation Technology, 47 (1), 93-98. https://doi.org/10.7211/jjsrt.47.93 (in Japanese with English abstract) ]
楠本成寿・高橋秀徳・東中基倫・早川裕弌 (2021.06) ブーゲー異常を用いた浅部間隙率分布の推定. 物理探査, 74, 30-35. https://doi.org/10.3124/segj.74.30 [ Kusumoto, S., Takahashi, H., Higashinaka, M., Hayakawa, Y. (2021.06) Estimation of near-surface porosity distribution using Bouguer anomaly. BUTSURI-TANSA (Geophysical Exploration), 74, 30-35. https://doi.org/10.3124/segj.74.30 (in Japanese with English abstract) ]
Tsunetaka, H., Hotta, N., Imaizumi, F., Hayakawa, Y.S., Masui, T. (2021.02) Variation in rainfall patterns triggering debris flow in the initiation zone of the Ichino-sawa torrent, Ohya landslide, Japan. Geomorphology, 375, 107529. doi:10.1016/j.geomorph.2020.107529
田村裕彦 ・早川裕弌 ・守田正志 ・小口千明 ・緒方啓介 ・小倉拓郎 (2020.12) 総合的な学習の時間を活用した地理・地形教育の実践－地域文化資源を用いた小規模公立小学校への地域学習から－. 地形, 41 (4), 343-361. https://doi.org/10.60380/tjgu.41.4_343 [ Tamura, Y., Hayakawa, Y.S., Morita, M., Oguchi, C.T., Ogata, K., Ogura, T. (2020.12) Practice of geography and geomorphology education in primary school using for The Period for Integrated Studies: An approach by providing classes to a small public elementary school in Yokohama City using regional cultural resources. Transactions, Japanese Geomorphological Union, 41 (4), 343-361. ]
Hayakawa, Y.S., Obanawa, H. (2020.06) Volumetric change detection in bedrock coastal cliffs using terrestrial laser scanning and UAS-based SfM. Sensors, 20, 3403. doi:10.3390/s20123403
Tsunetaka, H., Hotta, N., Hayakawa, Y.S., Imaizumi, F. (2020.06) Spatial accuracy assessment of unmanned aerial vehicle-based structures from motion multi-view stereo photogrammetry for geomorphic observations in initiation zones of debris flows, Ohya landslide, Japan. Progress in Earth and Planetary Science, 7, 24. doi:10.1186/s40645-020-00336-0
Hayakawa, Y.S., Ogura, T., Tamura, Y., Oguchi, C.T., Shimizu, K. (2020.06) Three-dimensional point cloud data by terrestrial laser scanning for conservation of an artificial cave. In: Parise, M., Varriale, R. (eds.) Damage assessment and conservation of underground spaces as valuable resources for human activities in Italy and Japan, Opera Ipogea (Journal of Speleology in Artificial Cavities), Numero Speciale 2020, 67-74. ISSN 1970-9692
Tamura, Y., Oguchi, C.T., Hayakawa, Y.S., Ogata, K., Ogura, T., Morita, M. (2020.06) Multidisciplinary conservation activities and community development based on the Yokohama City registered historic site “Taya Cave”. In: Parise, M., Varriale, R. (eds.) Damage assessment and conservation of underground spaces as valuable resources for human activities in Italy and Japan, Opera Ipogea (Journal of Speleology in Artificial Cavities), Numero Speciale 2020, 75-84. ISSN 1970-9692
Iizuka, K., Hayakawa, Y.S., Ogura, T., Nakata, Y., Kosugi, Y., Yonehara, T. (2020.05) Integration of multi-sensor data to estimate plot-level stem volume using machine learning algorithms - Case study of evergreen conifer planted forests in Japan. Remote Sensing, 12 (10), 1649. doi:10.3390/rs12101649
山内 啓之・小口 高・早川裕弌・瀬戸寿一 (2019.08) GISの標準コアカリキュラムと知識体系を踏まえた実習用オープン教材の開発と評価. E-journal GEO, 14 (2), 288-295. doi:10.4157/ejgeo.14.288 [ Yamauchi, H., Oguchi, T., Hayakawa, Y.S., Seto, T. (2019.08) Development and evaluation of open-access e-learning materials for GIS education based on the existing core curriculum and Body of Knowledge. E-journal GEO, 14 (2), 288-295. doi:10.4157/ejgeo.14.288 (in Japanese with English abstract) ]
Imaizumi, F., Masui, T., Yokota, Y., Tsunetaka, H., Hayakawa, Y.S., Hotta, N. (2019.08) Initiation and runout characteristics of debris flow surges in Ohya landslide scar, Japan. Geomorphology, 339, 58-69. doi:10.1016/j.geomorph.2019.04.026
Sîrbu, F., Dragut, L., Oguchi, T., Hayakawa, Y., Micu, M. (2019.06) Scaling land-surface variables for landslide detection. Progress in Earth and Planetary Science, 6, 44. doi:10.1186/s40645-019-0290-1
横田優至・菊池 慧・今泉文寿・逢坂興宏・増井健志・經隆 悠・堀田紀文・早川裕弌 (2019.05) 荒廃渓流源頭部における土石流段波の流動形態. 中部森林研究, 67, 105-108. [Yokota, Y., Kikuchi, K., Imaizumi, F., Ohsaka, O., Masui, T., Tsunetaka, H., Hotta, N., Hayakawa, Y.S. (2019.05) Runout characteristics of debris-flow surges in headwater of a steep debris flow torrent. Chubu Forestry Research, 67, 105-108. (in Japanese) ]
Obanawa, H., Hayakawa, Y.S. (2018.06) Variations in volumetric erosion rates of bedrock cliffs on a small inaccessible coastal island determined using measurements by an unmanned aerial vehicle with structure-from-motion and terrestrial laser scanning. Progress in Earth and Planetary Science, 5, 33. https://doi.org/10.1186/s40645-018-0191-8
早川裕弌・安芸早穂子・辻 誠一郎 (2018.05) 古景観の復原における3次元景観情報を用いた地理的想像の喚起. E-journal GEO, 13 (1), 236-250. [ Hayakawa, Y.S., Aki, S., Tsuji, S. (2018.05) Inspiring Geographical Imagination for Palaeolandscape Reconstruction Using 3D Landscape Information. E-journal GEO, 13 (1), 236-250. (in Japanese with English abstract) ] https://doi.org/10.4157/ejgeo.13.236
Giordan, D., Hayakawa, Y., Nex, F., Remondino, F., Tarolli, P. (2018.04) Review article: The use of Remotely Piloted Aircraft Systems (RPAS) for natural hazards monitoring and management. Natural Hazards and Earth System Sciences, 18, 1079-1096. doi:10.5194/nhess-18-1079-2018
Saito, H., Uchiyama, S., Hayakawa, Y.S., Obanawa, H. (2018.03) Landslides triggered by an earthquake and heavy rainfalls at Aso Volcano, Japan, detected by UAS and SfM-MVS photogrammetry. Progress in Earth and Planetary Science, 5, 15. doi:10.1186/s40645-018-0169-6
Hayakawa, Y.S., Yoshida, H., Obanawa, H., Naruhashi, R., Okumura, K., Zaiki, M., Kontani, R. (2018.02) Characteristics of debris avalanche deposits inferred from source volume estimate and hummock morphology around Mt Erciyes, central Turkey. Natural Hazards and Earth System Sciences, 18, 429-444. doi:10.5194/nhess-18-429-2018
Chen, C-W., Oguchi, T., Hayakawa, Y.S., Saito, H., Chen, H., Lin, G-W., Wei, L-W.., Chao, Y-C., Cheng, C-T. (2018.02) Sediment yield during typhoon events in relation to landslides, rainfall, and catchment areas in Taiwan. Geomorphology, 303, 540-548. doi:10.1016/j.geomorph.2017.11.007
藤田秀之・早川裕弌・李 召熙・相良 毅 (2017.12) 空間データ基盤を活用する共同研究支援システムの構築－東京大学空間情報科学研究センターにおける長期運用から－. GIS理論と応用, 25 (2), 7-14. [ Fujita, H., Hayakawa, Y.S., Lee, S., Sagara, T. (2017.12) Development of Joint Research Assist System Utilizing Spatial Data Infrastructure: Insights from Long-term Operation at Center for Spatial Information Science, The University of Tokyo. Theory and Applications of GIS, 25 (2), 7-14. (in Japanese with English abstract) ] https://doi.org/10.5638/thagis.25.63
Yoshida, H., Hayakawa, Y.S., Takanami, S., Hikitsu, A., Ohsaka, S., Ishii, R. (2017.11) Geomorphic reconstruction of formation and recession processes of waterfalls of the Kaminokawa River basin on Osumi Peninsula, southern Kyushu, Japan. Geographical Research, 55 (4), 424-437. doi:10.1111/1745-5871.12229
Hayakawa, Y.S., Yoshida, H., Dragut, L., Oguchi, T. (2017.11) Automated extraction of hummocks in debris avalanche deposits using DEMs: A case study at Mt. Gassan, northwest Japan. Zeitschrift für Geomorphologie, Supplementary Issues, 61 (2), 199-212. doi:10.1127/zfg_suppl/2017/0361
Imaizumi, F., Hayakawa, Y.S., Hotta, N., Tsunetaka, H., Ohsaka, O., Tsuchiya, S. (2017.11) Relationship between the accumulation of sediment storage and debris-flow characteristics in a debris-flow initiation zone, Ohya landslide body, Japan. Natural Hazards and Earth System Sciences, 17, 1923-1938. doi:10.5194/nhess-17-1923-2017
Hayakawa, Y.S., Fujita, H., Lee, S., Sagara, T. (2017.08) Developing a data-sharing system for geospatial research: A case study on the Joint Research Assist System (JoRAS). International Journal of Spatial Data Infrastructures Research, 12, 141-160.
Oguchi, T., Hayakawa, Y., Oguchi, C.T. (2017.04) Quaternary fluvial environments and paleohydrology in Syria. In: Enzel, Y, Bar-Yosef, O. (eds.) Quaternary of the Levant: Environments, Climate Change, and Humans, Cambridge University Press, 417-421.
Zahra, T., Paudel, U., Hayakawa, Y.S., Oguchi, T. (2017.04) Knickzone Extraction Tool (KET) - A new ArcGIS toolset for automatic extraction of knickzones from a DEM based on multi-scale stream gradients. Open Geosciences, 9 (1), 73-88. doi:10.1515/geo-2017-0006
早川裕弌 (2017.02) 「河川縦断形異常」「遷急点」「滝」「オンライン地形表示ツール」他. In: 鈴木隆介・松倉公憲・砂村継夫（編）「地形の辞典」朝倉書店. [ Hayakawa, Y.S. (2017.02) “Anomalies in River Longitudinal Profiles” “Knickpoint” “Waterfall” “Online Viewers of Landforms” etc. In: Suzuki, T., Nogami, M., Sunamura, T. (eds.) “Dictionary of Landforms”, Asakura Publishing. (in Japanese) ]
Hayakawa, Y.S., Kusumoto, S., Matta, N. (2017.02) Seismic and inter-seismic ground surface deformations of Murono mud volcano (central Japan): A laser scanning approach. Progress in Earth and Planetary Science, 4 (1), 3. doi:10.1186/s40645-016-0116-3
早川裕弌 (2017.01)「河川プロセス･河床縦断面形の発達―遷急点･岩屑の運搬･堆積」「山間部の河成地形―峡谷･早瀬･滝･谷底平野」In: 小池一之・山下脩二・岩田修二・漆原和子・小泉武栄・田瀬則雄・松倉公憲・松本 淳・山川修治（編）「自然地理学事典」朝倉書店. [ Hayakawa, Y.S. (2017.01) “Fluvial Processes and Development of River Longitudinal Profiles - Knickpoint, Sediment Transportation and Deposition” “Fluvial Landforms in Mountainous Regions - Gorges, Rapids, Waterfalls, Valley-bottom Plain” In: Koike, K., Yamashita, S., Iwata, S., Urusibara-Yoshino, K., Koizumi, T., Tase, N., Matsukura, Y., Matsumoto, J., Yamakawa, S. (eds.) Encyclopedia of Physical Geography, Asakura Publishing. (in Japanese) ]
Chen, C-W., Oguchi, T., Hayakawa, Y., Saito, H., Chen, H. (2017.01) Relationship between landslide size and rainfall conditions in Taiwan. Landslides, 14 (3),1235–1240. doi:10.1007/s10346-016-0790-7
齋藤 仁・内山庄一郎・小花和宏之・早川裕弌 (2016.11) 平成 24年（2012年） 7月九州北部豪雨に伴う阿蘇火山地域での土砂生産量の推定−UAVとSfM多視点ステレオ写真測量を用いた高精細地形データの活用−. 地理学評論, 89 (6), 1-13. [ Saito, H., Uchiyama, S., Obanawa, H., Hayakawa, Y.S. (2016.11) Sediment yields triggered by heavy rainfall in July 2012 at Aso volcano – Application of high definition topography using UAVs and SfM-MVS photogrammetry–. Geographical Review of Japan, 89 (6), 1-13. (in Japanese with English abstract) ]
早川裕弌・小花和宏之 (2016.10) 小型無人航空機を用いたSfM多視点ステレオ写真測量による地形情報の空中計測. 物理探査, 69 (4), 297-309. doi:10.3124/segj.69.297 [ Hayakawa, Y.S., Obanawa, H. (2016.10) Aerial measurements of topography using small UAS and SfM-MVS photogrammetry. Butsuri-Tansa (Geophysical Exploration), 69 (4), 297-309. doi:10.3124/segj.69.297 (in Japanese with English abstract) ]
Kondo, Y., Miki, T., Kuronuma, T., Hayakawa, Y.S., Kataoka, K., Oguchi, T. (2016.08) Concurrent and sustainable development of a local-scale digital heritage inventory through action research at Bat, Oman. Journal of Cultural Heritage Management and Sustainable Development, 6 (2), 195-212. doi:10.1108/JCHMSD-01-2016-0005
Hayakawa, Y.S., Kusumoto, S., Matta, N. (2016.07) Application of terrestrial laser scanning for detection of ground surface deformation in small mud volcano (Murono, Japan). Earth, Planets and Space, 68, 114. doi:10.1186/s40623-016-0495-0
Hayakawa, Y.S., Imaizumi, F., Hotta, N., Tsunetaka, H. (2016.07) Towards long-lasting disaster mitigation following a mega-landslide: high-definition topographic measurements of sediment production by debris flows in a steep headwater channel. In: Meadows, M., Lin, J.-C. (eds.) Geomorphology and Society (Advances in Geographical and Environmental Sciences Series) Springer, 125-147. doi:10.1007/978-4-431-56000-5_8
Yunus, A.P., Oguchi, T., Hayakawa, Y.S. (2016.07) Remote identification of fluvial knickzones and their imprints on landscape morphology in the passive margins of Western Arabia. Journal of Arid Environments, 130, 14-29. doi:10.1016/j.jaridenv.2016.02.016
早川裕弌・小花和宏之・齋藤 仁・内山庄一郎 (2016.07) SfM多視点ステレオ写真測量の地形学的応用. 地形, 37 (3), 321-343. [ Hayakawa, Y.S., Obanawa, H., Saito, H., Uchiyama, S. (2016.07) Geomorphological applications of Structure-from-Motion Multi-View Stereo photogrammetry: A review. Transactions, Japanese Geomorphological Union, 37 (3), 321-343. (in Japanese with English abstract) ] https://doi.org/10.60380/tjgu.37.3_321
早川裕弌・小口 高 (2016.06) 地形学における地上レーザ測量の活用. 地学雑誌, 125 (3), 299-324. [ Hayakawa, Y.S., Oguchi, T. (2016.06) Applications of Terrestrial Laser Scanning in Geomorphology. Journal of Geography (Chigaku Zasshi), 125 (3), 299-324. (in Japanese with English abstract) ] https://doi.org/10.5026/jgeography.125.299
Paudel, U., Oguchi, T., Hayakawa, Y. (2016.05) Multi-resolution landslide susceptibility analysis using a DEM and Random Forest. International Journal of Geosciences, 7 (5), 726-743. doi:10.4236/ijg.2016.75056
經隆 悠・堀田紀文・今泉文寿・早川裕弌 (2016.04) 大規模崩壊地における土石流の流下と地形変化の関係．中部森林研究, 64, 117-120. [ Tsunetaka, H., Hotta, N., Imaizumi, F., Hayakawa Y.S. (2016.04) Relationship between debris flows and topographic changes in the torrent of large-scale landslide. Chubu Forestry Research, 64, 117-120. (in Japanese) ]
Hayakawa, Y.S., Oguchi, C.T., Ariga, N., Aoki, H. (2015.09) Spatial distribution of changes in rockwall surface at Yoshimi-Hyakuana cave, central Japan, revealed by repeated terrestrial laser scanning. Procedia Earth and Planetary Science, 15, 619-626.doi:10.1016/j.proeps.2015.08.114
Hayakawa, Y.S., Oguchi, T., Saito, H., Kobayashi, A., Baker, V.R., Pelletier, J.D., McGuire, L.A., Komatsu, G., Goto, K. (2015.08) Geomorphic imprints of repeated tsunami waves in a coastal valley in northeastern Japan. Geomorphology, 242, 3-10.doi:10.1016/j.geomorph.2015.02.034
Gomez, C., Hayakawa, Y.S., Obanawa, H. (2015.08) A study of Japanese landscapes using Structure from Motion derived DSMs and DEMs based on historical aerial photographs: New opportunities for vegetation monitoring and diachronic geomorphology. Geomorphology, 242, 11-20. doi:10.1016/j.geomorph.2015.02.021
Hayakawa, Y.S., Yoshida, H., Dragut, L., Oguchi, T. (2015.06) Comparative analysis of manual and automatic extractions of hummock landforms in Mt. Gassan, northwestern Japan. In: Jaroslaw, J., Zwoliński, Z., Mitasova, H., Hengl, T. (eds.) Geomorphometry for Geosciences. Adam Mickiewicz University in Poznań - Institute of Geoecology and Geoinformation, International Society for Geomorphometry (Poznań, Poland), 51-52.
Yener, K.A., Kulakoglu, F., Yazgan, E., Kontani, R., Hayakawa, Y.S., Lehner, J.W., Dardeniz, G., Öztürk, G., Johnson, M., Hacar, A. (2015.06) New tin mines and production sites near Kültepe in Turkey: a third-millennium BC highland production model. Antiquity, 89 (345), 596-612. doi:10.15184/aqy.2015.30
Dou, J., Paudel, U., Oguchi, T., Uchiyama, S., Hayakawa, Y.S. (2015.04) Shallow and deep-seated landslide differentiation using Support Vector Machines: A case study of the Chuetsu area, Japan. Terrestrial, Atmospheric and Oceanic Sciences, 26 (2-II), 227-239. doi:10.3319/TAO.2014.12.02.07(EOSI)
早川裕弌・小口 高・齋藤 仁・小林明才・小松吾郎・後藤和久 (2015.04) 三陸海岸における津波による侵食地形の特徴：地上レーザ測量による解析. 地学雑誌, 124 (2), 241-258. doi:10.5026/jgeography.124.241 [ Hayakawa, Y.S., Oguchi, T., Saito, H., Kobayashi, A., Komatsu, G., Goto, K. (2015.04) Characteristics of erosional morphology by tsunami waves along the Sanriku Coast, northeastern Japan: Analysis using terrestrial laser scanning. Journal of Geography (Chigaku Zasshi), 124 (2), 241-258. (in Japanese with English abstract) doi:10.5026/jgeography.1234.241 ]
小花和宏之・早川裕弌・加藤 顕・ゴメス クリストファー (2015.04) 小型無人航空機および単独測位GNSS搭載カメラを用いた簡易的な地形測量手法. 地形, 36 (2), 87-106. [ CiNii ] [ Obanawa, H., Hayakawa, Y.S., Kato, A., Gomez, C. (2015.04) Simplified survey method using small UAV and single-point positioning GNSS equipped digital camera. Transactions, Japanese Geomorphological Union, 36 (2), 87-106. (in Japanese with English abstract) ]
Hayakawa, Y.S., Obanawa, H. (2015.03) Mapping cliff face changes around a waterfall using terrestrial laser scanning and UAS-based SfM-MVS photogrammetry. Proceedings of The International Symposium on Cartography in Internet and Ubiquitous Environments 2015, C5. [PDF]
Obanawa, H., Hayakawa, Y.S. (2015.03) High-resolutional topographic survey using small UAV and SfM-MVS technologies in hardly accessible area. Proceedings of The International Symposium on Cartography in Internet and Ubiquitous Environments 2015, C4. [PDF]
Korup, O., Hayakawa, Y., Codilean, A.T., Matsushi, Y., Saito, H., Oguchi, T., Matsuzaki, H. (2014.08) Japan’s Sediment Flux to the Pacific Ocean Revisited. Earth-Science Reviews, 135, 1-16. doi:10.1016/j.earscirev.2014.03.004
小花和宏之・早川裕弌・ゴメス クリストファー (2014.07) UAV空撮とSfMを用いたアクセス困難地の3Dモデリング. 地形, 35 (3), 283-294. [ CiNii ] [ Obanawa, H., Hayakawa, Y.S., Gomez, C. (2014.07) 3D modelling of inaccessible areas using UAV-based aerial photography and Structure from Motion. Transactions, Japanese Geomorphological Union, 35 (3), 283-294. ]
小花和宏之・早川裕弌・齋藤 仁・ゴメス クリストファー (2014.04) UAV-SfM手法と地上レーザ測量により得られたDSMの比較. 写真測量とリモートセンシング, 53 (2), 67-74. doi:10.4287/jsprs.53.67 [ Obanawa, H., Hayakawa, Y.S., Saito, H., Gomez, C. (2014.04) Comparison of DSMs derived from UAV-SfM method and terrestrial laser scanning. Journal of the Japan Society of Photogrammetry and Remote Sensing, 53 (2), 67-74. doi:10.4287/jsprs.53.67 ]
Dou, J., Oguchi, T., Hayakawa, Y.S., Uchiyama, S., Saito, H., Paudel, U. (2014.04) GIS-based landslide susceptibility mapping using a certainty factor model and its validation in the Chuetsu area, central Japan. In: Sassa, K., Canuti, P., Yin, Y. (eds.), Landslide Science for a Safer Geoenvironment, Vol. 2, 419-424, Springer International Publishing. doi:10.1007/978-3-319-05050-8_65
Yunus, A.P., Oguchi, T., Hayakawa, Y.S. (2014.04) Morphometric analysis of drainage basins in the western Arabian Peninsula using multivariate statistics. International Journal of Geosciences, 5 (5), 527-539 . doi:10.4236/ijg.2014.55049
Kontani, R., Sudo, H., Yamaguchi, Y., Hayakawa, Y.S., Odaka, T. (2014.03) An archaeological survey in the vicinity of Kültepe, Kayseri Province, Turkey. In: Atici, L., Kulakoğlu, F., Barjamovic, G., Fairbairn, A. (eds.) Current Research at Kültepe-Kanesh: An interdisciplinary and integrative approach to trade networks, internationalism, and identity. Journal of Cuneiform Studies Supplemental Series, 4, Lockwood Press, 95-106.
Hayakawa, Y.S., Oguchi, T. (2014.03) Spatial correspondence of knickzones and stream confluences along bedrock rivers in Japan: Implications for hydraulic formation of knickzones. Geografiska Annaler: Series A, Physical Geography, 96 (1), 9-19. doi:10.1111/geoa.12024
Hattanji, T., Ueda, M., Song, W., Ishii, N., Hayakawa, Y.S., Takaya, Y., Matsukura, Y. (2014.01) Field and laboratory experiments on high dissolution rates of limestone in stream flow. Geomorphology, 204, 485-492. doi:10.1016/j.geomorph.2013.08.027
Komatsu, G., Goto, K., Baker, V.R., Oguchi, T., Hayakawa, Y.S., Saito, H., Pelletier, J.D., Mcguire, L., Iijima, Y. (2014.01) Effects of tsunami wave erosion on natural landscapes: Examples from the 2011 Tohoku-oki Tsunami. In: Y. Kontar, V. Santiago-Fandiño, T. Takahashi (eds.), Tsunami Events and Lessons Learned; Environmental and Societal Significance. Springer, pp. 243-253. doi:10.1007/978-94-007-7269-4_13
Nishiaki, Y., Guliyev, F., Kadowaki, S., Arimatsu, Y., Hayakawa, Y., Shimogama, K., Miki, T., Akashi, C., Arai, S, Salimbeyov, S. (2013.12) Hacı Elamxanlı Tepe: Excavations of the earliest Pottery Neolithic occupations on the Middle Kura, Azerbaijan, 2012. Archäologische Mitteilungen aus Iran und Turan, Dietrich-Reimer-Verlag, 45, 1-25.
Zhang, W., Oguchi, T., Hayakawa, Y.S., Peng H. (2013.11) Morphometric Analyses of Danxia Landforms in Relation to Bedrock Geology: A Case of Mt. Danxia, Guangdong Province, China. The Open Geology Journal, 7, 54-62. doi:10.2174/1874262901307010054
Hayakawa, Y.S. (2013.08) Stability analysis of cliff face around Kegon Falls in Nikko, eastern Japan: an implication to its erosional mechanisms. International Journal of Geosciences, 4 (6A2), 8-16. doi:10.4236/ijg.2013.46A2002
Oguchi, T., Wasklewicz, T., Hayakawa, Y.S. (2013.05) Remote data in fluvial geomorphology: characteristics and applications. In: Shroder, J. (ed.) Treatise in Geomorphology vol. 9: Fluvial Geomorphology. Academic Press, Elsevier, 711-729. doi:10.1016/B978-0-12-374739-6.00262-1
Oguchi, T., Hori, K., Watanuki, T., Oguchi, C.T., Komatsubara, J., Hayakawa, Y. (2013.01). Fluvial surfaces along the Khabur River near Tell Seker al-Aheimar and their palaeoenvironmental implications. In: Nishiaki, Y., Kashima, K., Verhoeven, M. (eds.) Neolithic Archaeology in the Khabur Valley, Upper Mesopotamia and Beyond. SENEPSE 15. Berlin: ex oriente, 236 p.
早川裕弌・松多信尚・前門 晃・松倉公憲 (2013.01) 集集地震により生じた台湾中西部における滝の地震後10年間の後退速度とその変化. 地形, 34 (1), 21-36. [ CiNii ] [ Hayakawa, Y.S., Matsuta, N., Maekado, A., Matsukura, Y. (2013.01) Knickpoint recession rates for 10 years after the Chi-Chi Earthquake, central Taiwan. Transactions, Japanese Geomorphological Union, 34 (1), 21-36. (in Japanese with English abstract) ]
Hattanji, T., Wasklewicz, T.A., Hayakawa, Y.S., Wester, T., Hegi, Y. (2012.11/12) Hydrogeomorphic effects of basin lithology on development of channel steps in first-order basins of the Ashio Mountains, Japan. Physical Geography, 33 (6), 536-560. doi:10.2747/0272-3646.33.6.536
Korup, O., Görüm, T., Hayakawa, Y.S. (2012.01) Without power? Landslide inventories in the face of climate change. Earth Surface Processes and Landforms, 37 (1), 92-99. doi:10.1002/esp.2248
Oguchi, T., Hayakawa, Y.S., Wasklewicz, T. (2011.11) Data sources. In: Smith, M., Paron, P., Griffiths, J. (eds.) Geomorphological Mapping: Methods and Applications: A Professional Handbook of Techniques and Applications. Developments in Earth Surface Processes 15, Elsevier, 189-224. doi:10.1016/B978-0-444-53446-0.00007-0
柴田健一・鈴木洋佑・今泉文寿・早川裕弌 (2011.07) デジタルカメラと簡易レーザー距離計による山腹崩壊地の計測手法. 砂防学会誌：新砂防, 64 (2), 27-30. doi:10.11475/sabo.64.2_27 [ Shibata, K., Suzuki, Y., Imaizumi, F., Hayakawa, Y.S. (2011.07) The measurement method of landslides by digital camera and laser distance meter. Journal of the Japan Society of Erosion Control Engineering, 64 (2), 27-30. (in Japanese) doi:10.11475/sabo.64.2_27 ]
Hayakawa, Y.S. (2011.04) Postglacial recession rates of waterfalls in alpine glacial valleys. Transactions, Japanese Geomorphological Union, 32 (2), 179-184. [ CiNii ]
Hayakawa, Y.S., Matsukura, Y. (2010.10) Stability analysis of waterfall cliff face at Niagara Falls: An implication to erosional mechanism of waterfall. Engineering Geology, 116 (1-2), 178-183. 10.1016/j.enggeo.2010.08.004
Stark, C.P., Barbour, J.R., Hayakawa, Y.S., Hattanji, T., Hovius, N., Chen, H., Lin, C-W., Horng M-J., Xu K-Q., Fukahata, Y. (2010.03) The climatic signature of incised river meanders. Science, 327 (5972), 1497-1501. doi:10.1126/science.1184406
Imaizumi, F., Hattanji, T, Hayakawa, Y.S. (2010.02) Channel initiation by surface and subsurface flows in a steep catchment of the Akaishi Mountains, Japan. Geomorphology, 115, 32-42. doi:10.1016/j.geomorph.2009.09.026
Obanawa, H., Hayakawa, Y.S., Matsukura, Y. (2009.12) Rates of slope decline, talus growth and cliff retreat along the Shomyo River in central Japan: A space-time substitution approach. Geografiska Annaler, 91 (4), 269-278. doi:10.1111/j.1468-0459.2009.00369.x
早川裕弌, 青木 久, 藤永 豪, 前門 晃, 松倉公憲 (2009.07) 澁澤写真を用いた喜界島における台座岩の高さの推定：石灰岩地表面の溶解による低下速度の再検討. 地形, 30 (3), 227-231. [CiNii] [ Hayakawa, Y.S., Aoki, H., Fujinaga, G., Maekado, A., Matsukura, Y. (2009.07) Reexamination of Surface Lowering Rate of Uplifted Reef Limestone in Kikai Island, Southwestern Japan, Derived from the Height of a Pedestal in Shibusawa Film. Transactions, Japanese Geomorphological Union, 30 (3), 227-231. (in Japanese with English abstract) ]
Hayakawa, Y.S., Oguchi, T. (2009.10) GIS analysis of fluvial knickzone distribution in Japanese mountain watersheds. Geomorphology, 111, 27-37. doi:10.1016/j.geomorph.2007.11.016
Hayakawa, Y.S., Matsukura, Y. (2009.09) Factors influencing the recession rate of Niagara Falls since the 19th century. Geomorphology, 110, 212-216. doi:10.1016/j.geomorph.2009.04.011
Hayakawa, Y.S., Tsumura, H. (2009.03/04) Utilization of laser range finder and differential GPS for high-resolution topographic measurement at Hacıtuğrul Tepe, Turkey. Geoarchaeology, 24 (2), 176-190. doi:10.1002/gea.20261
Hayakawa, Y.S., Ikeda, A. (2009.01) Accuracy assessment of a topographic mapping method with laser range finder and differential global positioning system: A case study for a rock glacier in the Swiss Alps. Transactions, Japanese Geomorphological Union, 30 (1), 29-38. [CiNii]
Hayakawa, Y.S., Matsuta, N., Matsukura, Y. (2009.01) Rapid recession of fault-scarp waterfalls: Six-year changes following 921 Chi-Chi Earthquake in Taiwan. Transactions, Japanese Geomorphological Union, 30 (1), 1-13. [CiNii]
早川裕一, 津村宏臣 (2008.10) LRFとDGPSを用いた野外調査における地形測量：トルコ，ハジトゥール・テペ遺跡における適用事例. 地形, 29 (4), 421-434. [CiNii] [ Hayakawa, Y.S., Tsumura, H. (2008.10) A method of acquisition of detailed topographic data using LRF and DGPS for field survey: An application to an archaeological mound of Hacıtuğrul Tepe in Turkey. Transactions, Japanese Geomorphological Union, 29 (4), 421-434. (in Japanese with English abstract) ]
Hayakawa, Y.S., Oguchi, T., Lin, Z. (2008.10) Comparison of new and existing global digital elevation models: ASTER G-DEM and SRTM-3. Geophysical Research Letters, 35, L17404. doi:10.1029/2008GL035036
Hashimoto, A., Oguchi, T., Hayakawa, Y., Lin, Z., Saito, K., Wasklewicz, T.A. (2008.08) GIS analysis of depositional slope change at alluvial-fan toes in Japan and the American Southwest. Geomorphology, 100, 120-130. doi:10.1016/j.geomorph.2007.10.027
Hayakawa, Y.S., Yokoyama, S., Matsukura, Y. (2008.04) Erosion rates of waterfalls in post-volcanic fluvial systems around Aso volcano, southwestern Japan. Earth Surface Processes and Landforms, 33 (5), 801-812. doi:10.1002/esp.1615
Hayakawa, Y.S., Obanawa, H., Matsukura, Y. (2008.03) Post-volcanic erosion rates of Shomyo Falls in Tateyama, central Japan. Geografiska Annaler, 90A (1), 65-74. doi:10.1111/j.1468-0459.2008.00334.x
Hayakawa, Y.S., Oguchi, T., Komatsubara, J., Ito, K., Hori, K., Nishiaki, Y. (2007.03) Rapid on-site topographic mapping with a handheld laser range finder for a geoarchaeological survey in Syria. Geographical Research, 45 (1), 95-104. doi:10.1111/j.1745-5871.2007.00431.x
Hayakawa, Y.S., Oguchi, T. (2006.08) DEM-based identification of fluvial knickzones and its application to Japanese mountain rivers. Geomorphology, 78, 90-106. doi:10.1016/j.geomorph.2006.01.018
早川裕一, 横山勝三, 松倉公憲 (2005.12) 阿蘇火山・立野峡谷付近における滝の後退速度. 地形, 26 (4), 439-449. [CiNii] [ Hayakawa, Y.S., Yokoyama, S., Matsukura, Y. (2005.12) Recession rates of waterfalls in and upstream of the Tateno Canyon, Aso Volcano. Transactions, Japanese Geomorphological Union, 26 (4), 439-449. (in Japanese with English abstract) ]
Hayakawa, Y.S., Wohl, E.E. (2005.12) Recession rate of Poudre Falls in Rocky Mountain Front Range, Colorado, USA. Geographical Review of Japan, 78 (12), 853-858. doi:10.4157/grj.78.853
Hayakawa, Y., Oguchi, T. (2005.07) Evaluation of gravel sphericity and roundness based on surface-area measurement with a laser scanner. Computers & Geosciences, 31 (6), 735-741. doi:10.1016/j.cageo.2005.01.004
Hayakawa, Y. (2005.05) Reexamination of a predictive equation of waterfall recession rates in Boso Peninsula, Chiba Prefecture, Japan. Geographical Review of Japan, 78 (5), 265-275. doi:10.4157/grj.78.265
早川裕一, 松倉公憲 (2003.07) 日光，華厳滝の後退速度. 地学雑誌, 112 (4), 521-530. doi:10.5026/jgeography.112.4_521 [ Hayakawa, Y., Matsukura, Y. (2003.07) Recession rates of Kegon Falls in Nikko, Tochigi Prefecture, Japan. Journal of Geography (Tokyo), 112 (4), 521-530. (in Japanese with English abstract) doi:10.5026/jgeography.112.4_521 ]
Hayakawa, Y., Matsukura, Y. (2003.06) Recession rates of waterfalls in Boso Peninsula, Japan, and a predictive equation. Earth Surface Processes and Landforms, 28 (6), 675-684. doi:10.1002/esp.519
Hayakawa, Y.S., Ebina, M. (2025.04) Geomorphological settings around Damjili Cave. In: Nishiaki, Y., Zeynalov, A., Mammadov, Y. (Eds.) Damjili Cave: Investigating the Late Pleistocene to Holocene human history in the Southern Caucasus. Oxbow Books, UK, ISBN 979-8-8857-180-4, pp. 23-31.
Odaka, T., Maeda, O., Shimogama, K., Hayakawa, Y. S., Nishiaki, Y., Mohammed, N. A., Rasheed, K. (2023.05) Late Prehistoric Investigations at Shakar Tepe, the Shahrizor Plain, Iraqi Kurdistan: Preliminary Results of the First Season (2019). Proceedings of the 12th International Congress on the Archaeology of the Ancient Near East, 2, 415-428. Wiesbaden: Harrassowitz Verlag. https://doi.org/10.13173/9783447119030.415
Hayakawa, Y.S. (2021.02) Geomorphological settings of Göytepe. In: Nishiaki, Y., Guliyev, F. (eds.) Göytepe: Neolithic Excavations in the Middle Kura Valley, Azerbaijan, Archaeopress Publishing Ltd., Oxford, 11-14.
Odaka, T., Maeda, O., Shimogama, K., Hayakawa, Y.S., Nishiaki, Y., Mohammed, N.A., Rasheed, K. (2020.12) Late Neolithic in the Shahrizor Plain, Iraqi Kurdistan: New Excavations at Shakar Tepe, 2019. Neo-Lithics, 2020, 53-57.
早川裕弌 (2020.03) 3次元地表形状のセンシング：SfM写真測量、レーザ測量、UASの適用とその先へ. 北海道畜産草地学会報, 8, 43-45.
長谷川直子・植木岳雪・早川裕弌 (2019.03) フォーラム：地理学のアウトリーチに関する活動と展望. 地理学評論, 92, 38-39.
Giordan, D., Hayakawa, Y.S., Nex, F., Tarolli, P. (2018.11) Preface to the special issue: “The use of remotely piloted aircraft systems (RPAS) in monitoring applications and management of natural hazards.” Natural Hazards and Earth System Sciences, 18, 3085–3087. doi:10.5194/nhess-18-3085-2018
辻 誠一郎・早川裕弌・安芸早穂子・吉川昌伸・吉川純子・植田弥生・鈴木 茂・安 昭炫・一木絵理・安室 一（2016）三内丸山遺跡の集落景観の復原と図像化．特別史跡三内丸山遺跡年報, 20, 36–51. [Tsuji, S., Hayakawa, Y.S., Aki, S., Yoshikawa, M., Yoshikawa, J., Ueda, Y., Suzuki, S., Ahn, S., Hitoki, E., Yasumuro, H. (2016) Reconstruction and visualization of settlement landscape of Sannai Maruyama site. Annual Report on Special Historical Site, Sannai-Maruyama Site, 20, 36–51. (in Japanese) ]
早川裕弌 (2015) 地すべりキーワード 101（ワン・オー・ワン）－14－ 地上レーザ測量（TLS）. 日本地すべり学会誌, 52 (5), 261-262. doi:10.3313/jls.52.261 [ Hayakawa, Y.S. (2015) key words -14- Terrestrial Laser Scanning (TLS). Journal of the Japan Landslide Society, 52 (5), 261-262. (in Japanese) ]
早川裕弌, 小口 高, 齋藤 仁 (2015) 口絵：三陸海岸姉吉地区における津波侵食地形とその測量調査 | Pictorial: Laser scanning survey reveals characteristics of erosional landforms by tsunami waves in the valley at Aneyoshi along the Sanriku Coast. 地学雑誌, 124, viii. doi:10.5026/jgeography.124.viii
Hayakawa, Y.S., Oguchi, T., Kobayashi, H.H., Mendoza, R., De Paz, M.N., Badong, J.D., Seto, T., Kondo, Y. (2015) Developing a Prototype of Geospatial Data Sharing and Analysis System for Disaster Management in the Philippines: A Case Study on Typhoon Haiyan (Yolanda). CSIS Discussion Paper, 139, 1-24. [Fulltext PDF]
早川裕弌 (2015) 現地調査における地形情報取得のためのGNSSとTLS. in: 早川裕弌・内山庄一郎（編）高解像度地形情報シンポジウム論文集～地形情報のすべて～, CSIS Discussion Paper, 137, 11-19. [Fulltext PDF]
Hayakawa, Y.S., Hotta, N. (2014) Erosion control and climate change in Japan. In: Kohler, T., Wehrli, A., Jurek, M., eds. Mountains and climate change: A global concern. Sustainable Mountain Development Series. Bern, Switzerland, Centre for Development and Environment (CDE), Swiss Agency for Development and Cooperation (SDC) and Geographica Bernensia, 68-69.
紺谷亮一，小髙敬寛，須藤寛史，早川裕弌，山口雄治，F・クラックオウル，K・エムレ，S・エゼル，G・オズトゥルク (2013) トルコ共和国カイセリ県遺跡調査プロジェクト（KAYAP）第5次調査（2012年）概報．岡山市立オリエント美術館研究紀要, 27, 15-42.
早川裕弌, 紺谷亮一, フィクリ・クラックオウル, サバハッティン・エゼル, ギュゼル・オズトゥルク (2012) レーザ距離計と自動パノラマ撮影装置を組み合わせた簡易レーザスキャンシステムの構築. CSIS Discussion Paper, 113. [Fulltext PDF]
紺谷亮一，須藤寛史，山口雄治，早川裕弌，フィクリ・クラックオウル，クトゥル・エムレ (2012) トルコ共和国カイセリ県遺跡調査プロジェクト（KAYAP）第4次調査（2011年）概報．岡山市立オリエント美術館研究紀要, 26, 41-62.
紺谷亮一, クトゥル・エムレ, フィクリ・クラックオウル, 須藤寛史, 山口雄治, 早川裕弌 (2011) トルコ共和国カイセリ県一般調査（KAYAP）概報―第3次調査（2010 年）と過去3シーズンのまとめ―. 岡山市立オリエント美術館研究紀要, 25, 15-29.
紺谷亮一, クトゥル・エムレ, フィクリ・クラックオウル, 須藤寛史, 山口雄治, 津村宏臣, 岸田 徹, 早川裕弌 (2010) エイリキョイ遺跡における考古地理学的調査―トルコ共和国カイセリ県における一般調査の一成果―. 岡山市立オリエント美術館研究紀要, 24, 91-108.
中家 渉, 青木 久, 早川裕弌, 松倉公憲 (2009) 連打法によるエコーチップ硬さ試験機の反発値と微小窪みとの関係. 筑波大学陸域環境研究センター報告, 10, 29-36. [Fulltext PDF]
Hayakawa, Y.S., Tsumura, H. (2008) Accuracy assessment of a post-process differential GPS device: A case study in Kaman and Hacıtuğrul, central Turkey. Anatolian Archaeological Studies, 17, 265-269.
Hattanji, T., Oguchi, T., Oguchi, C.T., Hayakawa, Y.S., Song, W, De Rose, R. (2008) Field Trip Guide of the COMLAND Pre-symposium Field Trip in Japan: Land Degradation Processes, Dynamics of Land Degradation. IGU Commission on Land Degradation and Desertification, 22p.
Hayakawa, Y.S. (2007) Construction of Digital Landform Dataset at Kaman-Kalehöyük: Method Improvement by Automated Data Collection of Laser Range Finder. Anatolian Archaeological Studies, 16, 169-176.
Hayakawa, Y.S., Kashima, K. (2006) Topographic map construction using a handheld laser range finder and GIS at Kaman-Kalehöyük and Kültepe. Anatolian Archaeological Studies, 15, 191-195.
Hayakawa, Y., Aoki, H., Matsukura, Y. (2004) Evaluation of recession rates of Kaminari Falls in the upper Matsukawa River, Takayama Village, Nagano Prefecture. Annual Report of Institute of Geoscience, University of Tsukuba, 30, 21-25.
小口 高, 斉藤亨治, 橋本亜希子, 早川裕一, 山田真之 (2004) 堆積勾配の普遍的ギャップの提唱と扇端における河床勾配の急変との関係. 埼玉大学教育学部地理学研究報告, 24, 74-78.
Hayakawa, Y., Lin, Z., Oguchi, T., Suzuki, Y. (2004) Watershed analysis in Geomorphology. 平成13～15年度科学研究費補助金（基盤(C)）研究成果報告書「高解像度DEMを用いた後氷期開析前線の自動抽出と地形発達史への応用」（課題番号 13680100，研究代表者 小口 高）, 19-29.
早川裕一, 小口 高 (2004) DEMを活用した河床遷急区間の自動抽出―関東～中部日本の山地河川を例として―. 平成13～15年度科学研究費補助金（基盤(C)）研究成果報告書「高解像度DEMを用いた後氷期開析前線の自動抽出と地形発達史への応用」（課題番号 13680100，研究代表者 小口 高）, 71-76.
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小口 高, Siakeu, J., 畑屋みず穂, 高木哲也, 早川裕一 (2003) 関東～中部日本の8流域における河川懸濁物質濃度の空間分布とその規定要因．財団法人とうきゅう環境浄化財団（平成12～14年度助成調査・試験研究）研究成果報告書「GISを用いた流域分類と流出現象のモデル化に関する研究―多摩川流域丘陵地への適用―」（主任研究者：小口 高）, 129-146.
早川裕一, 松倉公憲 (2003) 口絵3 : 日光,華厳滝の後退速度. 地学雑誌, 112 (4), Plate5-Plate6. doi:10.5026/jgeography.112.4_Plate5
Hayakawa, Y., Matsukura, Y. (2002) Recession rates of waterfalls: a brief review. Annual Report of Institute of Geoscience, University of Tsukuba, 28, 1-4.