Mapping of submarine permafrost - MOSES

Submarine permafrost layers represent the seaward extension of the arctic permafrost layers at the continental margins in Northern America and Eurasia. Given their nature, the geometry of the submarine part of the permafrost layers is a very sensitive indicator for climate change. Within the MOSES Initiative (Modular Observation Solutions for Earth Systems) we intend to develop a passive seismic method to determine the thickness of the unfrozen layer above the ice-bonded permafrost (IBP) using a portable ocean bottom seismic (OBS) instrument. By recording ocean bottom seismic noise at a larger number of locations and analysing the data by the H/V method we will be able to map the spatial extend and temporal changes of the IBP.

Time frame

  • 2017 - 2019

Funding

  • HGF - Helmholtz Association of German Research Centres, GFZ

Principal Investigators

  • Christian Haberland, Trond Ryberg

Personnel

  • M. Krüger (GFZ), M. Hönig (GFZ), F. Brethauer (GFZ), P. Overduin (AWI)

Cooperations

  • AWI Potsdam, GEOMAR, University Potsdam

Methods & Equipment

  • passive seismic methods, portable autonomous surface vehicle (USV) with multi-paramter sensor platform

Publications/Results

  • first successful tests (proof of concept) in Lena Delta (Siberia)
  • Overduin, Ch. Haberland, T. Ryberg, F. Kneier, T. Jacobi, M. N. Grigoriev, M. Ohrnberger (2015): Submarine permafrost depth from ambient seismic noise. GRL, doi:10.1002/2015GL065409, 2015

Contact

Christian Haberland
Group Leader
Dr. Christian Haberland
Geophysical Deep Sounding
Albert-Einstein-Straße 42-46
Building A 42, Room 103
14473 Potsdam
+49 331 288-1810
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