Earthquake processes of the Himalayan collision zone in eastern Nepal and the southern Tibetan Plateau

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

6

Focal Mechanisms, Tibetan Plateau, Earthquake Depths, The Himalaya, Nepal, Continental Collision

Scientific paper

Focal mechanisms determined from moment tensor inversion and first motion polarities of the Himalayan Nepal Tibet Seismic Experiment (HIMNT) coupled with previously published solutions show the Himalayan continental collision zone near eastern Nepal is deforming by a variety of styles of deformation. These styles include strike-slip, thrust and normal faulting in the upper and lower crust, but mostly strike-slip faulting near or below the crust-mantle boundary (Moho). One normal faulting earthquake from this experiment accommodates east-west extension beneath the Main Himalayan Thrust of the Lesser Himalaya while three upper crustal normal events on the southern Tibetan Plateau are consistent with east-west extension of the Tibetan crust. Strike-slip earthquakes near the Himalayan Moho at depths >60 km also absorb this continental collision. Shallow plunging P-axes and shallow plunging EW trending T-axes, proxies for the predominant strain orientations, show active shearing at focal depths ~60-90 km beneath the High Himalaya and southern Tibetan Plateau. Beneath the southern Tibetan Plateau the plunge of the P-axes shift from vertical in the upper crust to mostly horizontal near the crust-mantle boundary, indicating that body forces may play larger role at shallower depths than at deeper depths where plate boundary forces may dominate.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Earthquake processes of the Himalayan collision zone in eastern Nepal and the southern Tibetan Plateau does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Earthquake processes of the Himalayan collision zone in eastern Nepal and the southern Tibetan Plateau, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earthquake processes of the Himalayan collision zone in eastern Nepal and the southern Tibetan Plateau will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-740222

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.