[1]ZHU Chuandong,LIU Jinzhao,ZHAN Wei,et al.Non-tectonic Gravity Effect of Absolute Gravity Observation Stations in Southern Margin of Qinghai-Tibetan Plateau[J].Journal of Seismological Research,2020,43(04):651-657.
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Non-tectonic Gravity Effect of Absolute Gravity Observation Stations in Southern Margin of Qinghai-Tibetan Plateau
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 04
Page number:
651-657
Column:
Public date:
2020-09-17
- Title:
- Non-tectonic Gravity Effect of Absolute Gravity Observation Stations in Southern Margin of Qinghai-Tibetan Plateau
- CLC:
- P315.726
- DOI:
- -
- Abstract:
- Based on three-dimensional ECMWF interim reanalysis data,GRACE time variable gravity model and GPS data from 2002 to 2017,we analyzed the nontectonic gravity effects of absolute gravity observation stations in southern margin of Qinghai-Tibetan Plateau.The results show that the ECMWF Interim atmospheric gravity effect mainly presents seasonal characteristics.Its maximum annual amplitude is 1.4 μGal.The GRACE hydrological gravity effect and gravity effect caused by the vertical crustal deformation from GPS show obvious seasonal and long-term trend characteristics.The maximum annual amplitude and long-term trend can reach 2.6 μGal and -0.6 μGal/a,1.8 μGal and 0.3 μGal/a,respectively.The comparative analysis of GRACE and GPS show that the nontectonic gravity effects in southern margin of Qinghai-Tibetan Plateau can be significantly affected by the local fluid mass load.
- References:
- -
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Last Update:
2020-09-17