Abstract

Submarine Permafrost Acoustic Monitoring:
2016-05-01 to 2016-10-31
During the seismic studies at in 2013 we recorded a substantial number of small, shallow earthquake-like seismic events at Muostakh Island/Laptev Sea. Given the target of this experiment in 2013 (imaging the ice-bonded permafrost IBP), the experimental setup (geometry) was not optimized to locate these unusual events with sufficiently high precision. We hypothesize that these quakes are related to inundation of the IBP and represent small icequakes reflecting the rapid permafrost warming. To study these events in more detail we propose a further study in the region focussing on the precise location and potentially the focal mechanism of these particular seismic events. We suggest to deploy a seismic network consisting of 17 OBS and 15 land stations for up to 6 weeks on and around Muostakh Island, Siberia. The study of these icequakes will give a further inside into the dynamics of the IBP.

Related People

Person Institute
Trond Ryberg (PI) GFZ Potsdam
Christian Haberland (PI) GFZ Potsdam
Paul Overduin (Coapplicant) Alfred Wegner Institut, Potsdam

Used Equipment

Device Amount
Cube3 15
3-D Geophone 15

Location

[71.8° N, 130° E]