China
Projects
Project Name and Acronym:
Crustal movement and environment monitoring in Polar Regions
Principal Contacts for Data
Prof. E Dongchen
Chinese Antarctic Center of Surveying and Mapping, Wuhan University
No.129 Luoyu Road, Wuhan, P.R.China 430079
Project Scientists
E Dongchen, Chinese Antarctic Center of Surveying and Mapping, edc@whu.edu.cn
WANG Zemin, Chinese Antarctic Center of Surveying and Mapping, zmwang@whu.edu.cn
ZHANG Shengkai, Chinese Antarctic Center of Surveying and Mapping, zskai@whu.edu.cn
AI Songtao, Chinese Antarctic Center of Surveying and Mapping, ast@whu.edu.cn
ZHOU Chunxia, Chinese Antarctic Center of Surveying and Mapping, zhoucx@whu.edu.cn
Project Locations
West Antarctica, East Antarctica, Svalbard
Project Activities
GPS data collection
Principal Science Objectives
Crustal movement monitoring, GPS application in ionosphere research, GPS application troposphere research
Research Highlights
First GPS station at Dome A
Published Papers
Research of Polar TEC fluctuations and polar patches during magnetic storm using GPS, MENG Yang, WANG Zemin, E Dongchen, CAI Hongtao, CHINESE JOURNAL OF GEOPHYSICS, 2008. Vol. 51, No.1:17-24.
New model of Antarctic plate motion and its analysis, JIANG Weiping, E Dongchen, ZHAN Biwei, LIU Youwen, CHINESE JOURNAL OF GEOPHYSICS, 2009.Vol.52.No.1:41-49.
Abstracts
Using the GPS observations from perennial GPS station in Zhongshan Station and IGS (International GPS Service) station (CAS1, MCM4, SYOG, MAW1) in the Antarctic region during a geomagnetic storm, November 6～10, 2004, TEC and ROT values along visible satellite passes are computed, then the number of polar patches are estimated based the frequency and amplitude of TEC fluctuations, furthermore, the polar ionospheric behavior and characteristic of polar patches during storms are analyzed. The derived conclusions are consistent with known characteristics of polar ionosphere detected by other instruments. The work done in this paper haven't been developed in our country, so there will be some guiding significance to future research work from the method and conclusions in this paper.
Since 1995, Antarctic crustal movement campaign has been taking place by Scientific Committee on Antarctic Research (SCAR) every year. We analyse SCAR campaign data from 1997 to 2004 and some continuous GPS stations in Antarctica using GAMIT/GLOBK software. The data analysis involves two major procedures. The first procedure uses the GAMIT software to estimate parameters such as station position and orbital trajectory on a daily basis for a given 24-hour interval from the union of three data sets: (1) the campaign stations, (2) the continuously operating GPS stations in Antarctica, (3) long-running continuous GPS stations around Antarctica. In the second procedure, we combine the daily solutions with global GPS sub-networks (IGS1, IGS2, IGS3), which is provided by Scripps Institution of Oceanography (SIO), using the GLOBK software in a “regional stabilization” approach in order to estimate the positions and velocities. Then we discuss present-day crustal movement of Antarctic plate. The position of the rotation pole （58.69°N, 128.29°W）and its rate (0.224(°)/Ma) derived from SCAR GPS data is significantly different from the NNR-NUVEL-1A estimations or from some GPS results for the Antarctic tectonic plate. As for the relative angular motion between Antarctic and Australian, the differences between the results from the paper and some other models are better. All differences for rotation rate are smaller than 0.01(°)/Ma, and for rotation pole are smaller than 4°. The GPS results give the new and precise model on Antarctic plate motion.
Institutes / Agencies that provided project support
Chinese Arctic and Antarctica Administration
State Ocean Administration of China
State Bureau of Surveying and Mapping of China
Other IPY Programs contributed to
PANDA(The Prydz Bay, Amery Ice Shelf and Dome A Observatories – A Chinese Key International Program for IPY)
GIIPSY(Global Inter-agency IPY Polar Snapshot Year)
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