Paper: Using georadar and a mobile geoelectrics device to map shallow sediment distribution on a large scale

[UPDATE 2017-05-14: The links now lead to the free version of the paper, available until 30 June.]

Together with my colleagues I have published a new paper in which we describe a methodology for mapping the shallow architecture of large sedimentary basins with minimum effort and high resolution. We use two geophysical methods and combine them with point information from shallow drillings to identify different types of alluvial, fluvial, and aeolian sediments in the Orkhon Valley in Mongolia. We then show that our results fit well with a remote sensing approach. Although we did not target active faults in our study, the methodology is well suitable for detecting deformed/offset sediments without surface expression due to high erosion or sedimentation rates. That’s why I feel the study is of interest for the fault-hunting community. Continue reading “Paper: Using georadar and a mobile geoelectrics device to map shallow sediment distribution on a large scale”

A Holocene surface rupture in Germany

I am quite happy that our new paper has finally been published in GJI. We worked on a fault between Aachen and Cologne in Germany and found that there has been a surface rupturing earthquake less than 9000 years ago, and possibly not much older than 2500 years BP. The area is of interest also because in 1755/56 a series of damaging earthquakes hit Düren and its surroundings – these are the strongest historical events in Germany that we know of. The quakes were felt as far away as Berlin, Strasbourg, and London, yet there were no primary ruptures. “Our” quake must have been much stronger… Continue reading “A Holocene surface rupture in Germany”

What’s up? The Friday links (38)

Annals of Geophysics (former Annali di Geofisica) published a special volume “Geoethics and geological culture. Reflections from the Geoitalia Conference 2011“. This is pretty interesting for us bloggers, topics include:

  • Geoethics and geological culture: methods, goals and values able to influence society
  • Geoethical implications in risks and geo-resources management
  • Communication and education related to geosciences in a geoethical perspective
  • Geoheritage and geodiversity as values for sustainability

Even more interesting for me is a special issue yet to come: “The Emilia seismic sequence of May-June, 2012: preliminary data and results”. Paper submission deadline: July 22, 2012.  Continue reading “What’s up? The Friday links (38)”

What’s up? The Friday links (22)

Emil Wiechert was born 150 years ago (26 December 1861). He not only invented modern Geophysics and Seismology, but he also had the first chair of Geophysics worldwide (1898 in Göttingen, Germany). Wiechert became famous for his seismograph. Now the Deutsche Post released a special stamp showing Wiechert, his seismograph and the original seismogram of the 1906 San Francisco earthquake as registered in Göttingen, Germany!

Continue reading “What’s up? The Friday links (22)”