| Autor: |
Xin Li, I.M. Varentsov, D. Walia, D. Bai, P. V. Ivanov, S. Kumar, Ilya Lozovsky |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Springer Proceedings in Earth and Environmental Sciences ISBN: 9783030359058 |
| Popis: |
The EHS3D international project in the Eastern Tibet and NE India brought in recent 15 years a huge array of magnetotelluric (MT) and magnetovariational (MV) soundings. These soundings were performed simultaneously in clusters containing several broadband (BMT) and long-period (LMT) field instruments and local geomagnetic observatories (Xiao et al. 2010; Varentsov et al. 2010). Reliably estimated impedances, tippers and horizontal MV responses made possible the resolution of conductivity structures within the whole tectonosphere at depths reaching 250 km. The model resulted from 2D+ inversion of joint MT/MV data set along the submeridional EHS-3 profile crossing the whole Eastern Tibet outlined sedimentary basins, subhorizontal upper crustal conductors, bright crustal-mantle conducting anomalies above dipping plates, well resistive lithospheric mantle and several “asthenospheric” cells. Recently, the EHS3D array has been extended with two new profiles. The EHS-4 profile fills the gap between EHS-2 and EHS-3 geotraverses in China, while the EHS-IND profile continues Tibetan profiles for more than 500 km into India through the Brahmaputra Valley. We present a view at the extended EHS3D data set and first 1D model along the joint profile from the Indian Craton to the SE Tibetan Region. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
