Stress, GPE and Tibet

Magnitudes of differential stress in the lithosphere, especially in the crust, are still disputed. Our recent work addressing this topic with numerical modelling and geophysical data from the field has just been accepted at Geophysical Journal International:

Schmalholz SM, Duretz T, Hetényi G, Medvedev S (2019) Distribution and magnitude of stress due to lateral variation of gravitational potential energy between Indian lowland and Tibetan plateau. (weblink)

Post-HKT and Tibet low-velocity zones

The 33rd HKT conference is over and we keep a great memory of this event! A final, post-conference message is yet to come, with the group photo, the keynote speech’s video, etc.

Following the advice of one of the participants and a good colleague, I here share the PDF version of a 7-year old article that is not so visible, showing that seismic low-velocity zones in South Tibet are present in spots, and do not form a continuous layer.

The HKT2018 conference is coming up

After more than a year preparation, the 33rd Himalaya-Karakorum-Tibet workshop is at the doorstep. From Monday to Wednesday next week (Sept. 10-12) more than 130 researchers will present ca. 45 talks and ca. 85 posters on the structure, dynamics and natural hazards of the HKT region. The invited keynote speaker is Peter Molnar (U. Colorado), who will talk about the Growth of the Tibetan Plateau. About 35 people will also go on a 3-day field excursion in the Western Swiss Alps before the workshop. Full information can be found at the HKT2018 website. We look forward to host the event and the participants.

Bhutan Himalaya – Shillong Plateau seismotectonics paper

Our work on the seismotectonic interaction between the Bhutan Himalaya and the Shillong Plateau has just been published in Tectonophysics. The results point to a weaker interaction between thrust faults in the two regions than previously suggested. Earthquakes on these thrusts mostly affect strike-slip faults connecting the two regions, so there is no “stress shadow” effect from the 1897 earthquake on the Bhutan Himalaya.

EASI receiver function results published

The first paper of the Eastern Alpine Seismic Investigation (EASI) project, discussing the crustal structure using various approaches based on receiver functions, has been accepted for publication in Tectonophysics. The final version is now online. EASI is an AlpArray Complementary Experiment, carried out by IG Prague, U Vienna, ETH Zurich and U Lausanne. EASI data will be open to the public in Autumn 2018.