大地测量与地球动力学2012，Vol.32Issue(1)：10-12,16,4.
印度Ms6.8地震区域重力场变化特征研究
GRAVITY VARIATION DETECTED BY GRACE IN INDIAN Ms6.8 EARTHQUAKE REGION
摘要
Abstract
The gravity variations were computed in Indian earthquake region (76° ~96°E,16° ~36°N) with GRACE data observed from July to September in 2009,2010 and 2011 respectively taking the GRACE GGM03C gravity field model as a reference and then the monthly gravity variations of Indian mainland before and after the Gaussian smoothing were compared between each other. The computed result is the most reasonable when the radius of the Gaussian smoothing is 600 km. The results show that the gravity variation of the studied area was positive in 2009. The gravity variation changed more than 4×10-8ms-2 in New Delhi, Bhopal and Sikkim districts. In 2010, it was smaller than that in the same time ,2009. The gravity variation change at the epicenter was of almost 6 × 10-8 ms-2 in 2011 than that in 2009. The strong earthquake occurred within the steep gradient zone.关键词
GRACE/重力场/高斯平滑/印度地震/地壳应力Key words
GRACE/ gravity field/ Gaussian smoothing/ India earthquake/crustal stress分类
天文与地球科学引用本文复制引用
徐海军,张永志,段虎荣..印度Ms6.8地震区域重力场变化特征研究[J].大地测量与地球动力学,2012,32(1):10-12,16,4.基金项目
国家自然科学基金面上项目(40674001) （40674001）
中央高校基本科研业务费专项(CHD2010ZY016)和长安大学基础研究支持计划专项基金 （CHD2010ZY016）
陕西省科学基础研究计划项目(2011JM5005) （2011JM5005）
