负责人：何玉梅 研究员 ymhe@mail.iggcas.ac.cn
2015年，中国科学院地质与地球物理研究所与缅甸地球科学学会联合，在缅甸造山带实施了中缅地球物理观测项目一期，以探索缅甸下方的深层结构，研究陆陆碰撞后的大陆俯冲动力学。
在该项目的支持下，从2016年6月至2018年2月，我们在缅甸部署了第一个大尺度流动地震台阵。该地震台阵包含71个临时台站，从西到东覆盖缅甸中部（21.6°N-23.9°N和93.1°E-97.3°E）。该台阵由一个东西走向的线性子台阵和二维主干网络组成。线性子台阵长400 km，穿过缅甸的主要构造单元。具体从Rezua的西部，印缅山脉的缅甸-印度边界，往东穿过中央盆地和实皆断层，最后到达掸邦高原的Hsipaw。总共部署了38个台站，每个台站之间间隔10-15公里。二维主干网由33个台站组成，台站间距30-50 km，覆盖印缅山脉和中央盆地的250km×320km区域 （图1，图2，图3）。
二维主干台阵的所有台站和东西走向线性子台阵中的13个台站均配备了Nanometrics Trillium 120PA宽频带地震计，带宽从50 Hz到120 s，而线性子台阵的其他台站配备了Guralp CMG-3ESP宽频带地震计，频率从50 Hz至30/60 s。所有台站都配备了REF TEK 130数字记录仪。考虑到缅甸农村的电力短缺，每个台站都配备了两个60W的太阳能电池板和一个70Ah或100Ah的电池，这具体取决于雨季的道路情况（图4）。地震台阵实验室的技术人员、中国科学院地质与地球物理研究所的研究人员和缅甸地球科学学会的同事每3个月收集一次地震数据。在18个月的观测期间，共收集了457G的连续数据，这些数据清楚地记录了低噪声条件下的地震。
图1 流动台站分布（红色三角）
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图2 台站选址
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图3 中缅地球物理专家合作建设项目的第一个台站M28台
图4缅甸野外台站布设
项目相关已发表文章:
1.Yumei He, Tianyu Zheng*, Yinshuang Ai, Guangbing Hou, Qi-Fu Chen (2018), Growth of the lower continental crust via the relamination of arc magma, Tectonophysics, 724-725, 42-50.
2. Yi Wang, Yumei He*, Gang Lu, Lianxing Wen (2020), Seismic, thermal and compositional structures of the stagnant slab in the mantle transition zone beneath southeastern China, Tectonophysics, 775, 228208.
3. Tianyu Zheng, Yumei He*, Lin Ding, Mingming Jiang, Yinshuang Ai, Chit Thet Mon, Guangbing Hou, Kyaing Sein, Myo Thant (2020), Direct structural evidence of Indian continental subduction beneath Myanmar, Nature Communications. 11:1944, Doi: 10.1038/s41467-020-15746-3. The seismic receiver functions for this study can be downloaded via ftp://159.226.119.161/data/CMGSMO-1/RF_mainprofile.
4.Chit Thet Mon, Xuan Gong, Yun Wen, Mingming Jiang, Qi-Fu Chen, Miao Zhang, Guangbing Hou, Myo Thant, Kyaing Sein, Yumei He* (2020), Insight into major active faults in Central Myanmar and the related geodynamic sources, Geophysical Research Letters, 47, e2019GL086236. Doi:
10.1029/2019GL086236. Earthquake waveforms for this study can be downloaded via ftp://
159.226.119.161/data/CMGSMO-1/Myanmar_Reloc_Focmec.
5.Yuan Ling, Tianyu Zheng*, Yumei He, Guangbing Hou (2020), Response of crustal structure to Tibetan Plateau growth and Neo-Tethys evolution in Yunnan Province, China. Tectonophysics, 797, 228661.
6.Yiming Bai, Xiaohui Yuan, Yumei He, Guangbing Hou, Myo Thant, Kyaing Sein, Yinshuang Ai*(2020), Mantle transition zone structure beneath Myanmar and its geodynamic implications, Geochemistry Geophysics Geosystems (G3), e2020GC009262. Doi: 10.1029/2020GC009262. Receiver function data used in this study can be downloaded via http://www.dx.doi.org/10.12197/2020GA018.
7.Guangli Zhang, Yumei He*, Yinshuang Ai*, Mingming Jiang, Chit Thet Mon, Guangbin Hou, Myo Thant, Kyaing Sein (2021), Subducted Indian continental lithosphere and related volcanism beneath Myanmar: Constraints from local earthquake tomography. Earth and Planetary Science Letters, 567:116987. Doi: 10.1016/j.epsl.2021.116987.
8.Enbo Fan, Yumei He, Yinshuang Ai*, Steve Gao*, Kelly H. Liu, Mingming Jiang, Guangbing Hou, Chit Thet Mon, Myo Thant, Kyaing Sein (2021), Seismic anisotropy and mantle flow constrained by shear wave splitting in central Myanmar. Journal of Geophysical Research, Doi: 10.1029/2021JB022144. The CMGSMO teleseismic waveform data, local earthquakes waveform data, and receiver function data used in this study can be accessed from http://www.geophys.ac.cn/ArticleDataInfo.asp?MetaI d=309.
9.Yiming Bai, Yumei He, Xiaohui Yuan, Frederik Tilmann, Yinshuang Ai*, Mingming Jiang, Guangbing Hou, Chit Thet Mon, Myo Thant, Kyaing Sein (2021), Seismic structure across central Myanmar from joint inversion of Receiver Functions and Rayleigh wave dispersion. Tectonophysics, 818, 229068. Data related to this paper may be requested from the authors.
10.Shun Yang, Xiaofeng Liang, Mingming Jiang*, Lin Chen, Yumei He*, Chit Thet Mon, Guangbing Hou, Myo Thant, Kyaing Sein, Bo Wan (2022), Slab remnants beneath the Myanmar terrane evidencing double subduction of the Neo-Tethyan Ocean. Science Advances, 8(34), eabo1027. Doi: 10.1126/sciadv.abo1027. The CMGSMO seismic waveform data used in this study can be accessed from http://doi.org/10.12197/2022GA010.