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International Symposium on
Organaized by Yoshinori KODAMA (Tottori Univ.) & NIGUSSIE HAREGEWEYN AYEHU (Tottori Univ.)
Date and Time: November 2 14:15～16:30
Date and Time: November 2 14:15～16:30
Venue:
Tottori University International Platform for Dryland Research and Education and Online (Zoom)
Registration:
To participate in person, no pre-registration is necessary. Please visit the venue directly.
To participate online, please register here.
Programme
Programme
14:15-14:20
Purpose explanation of the Symposium by Yoshinori Kodama
Purpose explanation of the Symposium by Yoshinori Kodama
14:20-15:00
Keynote speech
Keynote speech
Susan J. Conway (Nantes Univ., France)
Susan J. Conway (Nantes Univ., France)
Topographic long profiles of gullies and sand dunes on Mars
Topographic long profiles of gullies and sand dunes on Mars
In orbit since 2006 NASA’s Mars Reconnaissance Orbiter has totally changed the way we study the geomorphology of Mars. Aboard is the High Resolution Science Imaging Experiment (HiRISE) which takes images at 25 cm/pixel, an equivalent quantity to satellite imaging of the Earth. This allows reconstruction of the surface topography at 1 m/pixel by stereophotogrammetry, allowing in detail morphological studies of Mars’ surface. In this presentation I will show topographic long profiles of Martian gullies and sand dunes and how we have used these to infer the processes shaping Mars today and in the last few million years.
15:15-15:35
Speaker 1
Speaker 1
Nigussie Haregeweyn Ayehu (Tottori Univ., Japan)
Nigussie Haregeweyn Ayehu (Tottori Univ., Japan)
Gully erosion as a geomorphic process: Drivers, and control measures
Gully erosion as a geomorphic process: Drivers, and control measures
Gully erosion is a significant geomorphic process triggered by both natural and human-induced factors, leading to multiple environmental and socio-economic consequences, particularly in developing and dryland regions. The presentation introduces various drivers, and management measures of gullies, based on case studies conducted in various environmental settings across Ethiopia from 2014 to 2023.
15:35-15:55
Speaker 2
Speaker 2
Yoshinori Kodama (Tottori Univ., Japan)
Yoshinori Kodama (Tottori Univ., Japan)
Sediment transport mode determines the longitudinal gradient of a depositional (even erosion) surface
Sediment transport mode determines the longitudinal gradient of a depositional (even erosion) surface
The sediment transport mode often determines the longitudinal gradient of a landform. This will be explained through the laws observed in the longitudinal gradient of landforms and examples of abrupt changes in the longitudinal gradient at Daisen Volcano, Tottori, Japan and so on.
16:00-16:30
General discussion
General discussion
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