Institute of Space and Plasma Sciences

College of Sciences, National Cheng Kung University

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Research Accomplishment

重要研究成果及獎項

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Seminar & Lecture


Development of space weather research-A new approach to the substorm onset issue

Designated Assistant Professor Tzu-Fang Chang

Institute for Space‐Earth Environmental Research (ISEE), NAGOYA UNIVERSITY (NU) JAPAN

2019/3/21 14:10 R.48218 –2nd floor of Composite Building

Magnetospheric storms and substorms are the main manifestations of what are nowadays known as the “space weather” which has a practical impact on modern technology systems and our activities on Earth. Various spacecraft have been investigating the space environment around the Earth to explore the effects of substorms and storms-the THEMIS (Time History of Events and Macroscale Interactions during Substorms) and the ERG (Exploration of energization and Radiation in Geospace) missions for example. In particular, substorms are disturbances in the Earth's magnetosphere that causes energy to be released from the "tail" of the magnetosphere to the high-latitude ionosphere. The enhancement in electron fluxes during substorms can be a few orders greater than the pre-onset conditions. Since a fierce debate on substorm onset triggering has persisted for a long time, it highlights a pressing need for a better understanding of substorms in developing the space weather research. Two categories of substorm onset initiation models have been proposed-the Near-Earth Neutral Line model and the Current Disruption model. After the launch of the THEMIS quintet, some notable results even reported a new scenario – plasma intrusion to the inner plasma sheet. Thus starting a further exploration of substorms is inevitable. We will put forth a proposal to settle one of the center issues in dispute, the definition of substorm onset, by investigating the auroral streamers.


Long-lasting radial IMF events and their influence of dayside magnetosphere

Dr. Gilbert Pi

Faculty of Mathematics and Physics, Charles University Prague, Czech Republic

2019/3/15 14:00 R.4811B –2nd floor of Composite Building

Long-lasting radial interplanetary magnetic field (IMF) events are one of the special solar wind conditions. These events are usually accompanied with low density, weak magnetic field strength, low temperature, and low fluctuations of each solar wind parameters; however, the unique IMF orientation can cause numerous interesting features in the dayside magnetosphere. When the radial magnetic field transits through the bow shock, the magnetic field will be enhanced in all components. After that, Bx will divert to the Y and Z components and form an asymmetric Bz polarization in the Northern and Southern Hemispheres near the magnetopause. This asymmetry will lead the dayside reconnections occur at different locations and create a complex structure of magnetopause and its boundary sublayers. These sublayers of (1) the inner part of the low-latitude boundary layer (LLBL) on closed magnetic field lines; (2) the outer LLBL on open field lines; (3) the inner part of the magnetosheath boundary layer (MSBL) formed by dayside reconnection in the Southern Hemisphere; and (4) the outer MSBL resulting from lobe reconnection in the Northern Hemisphere are identified by observation.

CHAIRPERSON POSITION ANNOUNCEMENT, Institute of Space and Plasma Sciences, National Cheng Kung University, Taiwan

Position: Chairperson

Appointment: The appointment will begin on August 1, 2019.

Requirements:

1. The applicant must hold a position in the rank of associate professor (or associate researcher) or higher.

2. The applicant’s fields of expertise must be relevant to the teaching and research program of the Institute of Space and Plasma Sciences (ISAPS).

One of the following Application Methods:

1. The applicant must provide a copy of curriculum vitae, a list of publications, and a list of two reference persons.

2. Individuals who have expertise relevant to the teaching and research program of ISAPS and hold position in the rank of associate professor (or associate researcher) or higher can also be recommended by two persons. The recommendation form can be downloaded from the ISAPS website.

Application must be completed by April 15, 2019.

Contact Information:

Chairperson of the Recruiting Committee

Institute of Space and Plasma Sciences, National Cheng Kung University

No.1, University Road, Tainan City 70101, Taiwan

TEL +886-6-2757575-65900-10

FAX +886-6-2003130

EMAIL em65900@email.ncku.edu.tw

Website http://www.isaps.ncku.edu.tw

Faculty Position, Institute of Space and Plasma Sciences, National Cheng Kung University, Taiwan.

Applicants are invited to apply for a faculty position. Qualified candidates must have a Ph.D. degree and demonstrate the capability of performing independent research on plasmas in one of the following areas:

(1) plasma physics

(2) space physics

The appointment will begin on August 1, 2019 or February 1, 2020. Applicants should submit a cover letter, teaching and research experience and plans, curriculum vitae, publication list, and three letters of recommendation before February 21, 2019 to Institute of Space and Plasma Sciences (ISAPS), National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan (Tel: 886-6-2757575 ext. 65900-202, Fax: 886-6-2003130, E-mail: em65900@email.ncku.edu.tw, Website: http://www.isaps.ncku.edu.tw). All the documents should be scanned to PDF files and emailed to ISAPS before submitting hard copies.