Section 2.7: Near-surface Geophysics

Current Projects

A potential repository site must be explored comprehensively and at high resolution, in order to provide essential data for its characterization and for the long-term safety assessment.

read more

Constrained modelling of electromagnetic and potential field data to investigate the Walvis Ridge magmatism and its interaction with the Kaoko Mobile Belt, Namibia.

read more

The area around Nový Kostel/NW-Bohemia is part of the geodynamically active Variscan orogenic belt in Europe, and experiences repeated occurrence of intra-plate earthquake swarms and is characterized by numerous mineral springs and CO2 emissions.

read more

The objective of the MT part of the observatory is to monitor and analyse electromagnetic data to decipher possible changes in the subsurface electrical resistivity distribution. After elimination of a geomagnetic source field effect which strongly affects the measurements, we examine remaining temporal electromagnetic field variations.

read more

Development and testing of electromagnetic geophysical methods to monitor the distribution of a biopolymer in the underground in the context of enhanced oil recovery.

read more

Around the geothermal research platform near Gross Schoenebeck, a 3D seismic survey was conducted to study sedimentary and volcanic reservoir layers with potential for geothermal usage.

read more

The Mérida Andes (MA) are the main mountain chain of western Venezuela. GFZ acquired two 240 km and 160 km long magnetotelluric profiles in March and April 2015.

read more

The great Sumatra fault (SF) is one of the most prominent examples for large strike-slip fault systems developing along subduction zones. A passive seismological experiment is carried out in northern Sumatra, close to the city of Banda Aceh. Our temporary seismological network is covering an interesting segment of the SF, which is also characterized by increased surrounding volcanic activity.

read more

The San Andreas fault (SAF) is one of the most studied strike-slip faults in the world - yet its subsurface geometry is still uncertain in most locations. The Salton Seismic Imaging Project (SSIP) was undertaken to image the structure surrounding the SAF and also its subsurface geometry. Such data are useful as input for modeling scenarios of strong ground shaking in the surrounding high-population areas. As part of long-term cooperations between GFZ and partners in the U.S. we apply pre-stack depth migration methods to obtain images of steeply dipping structures around the SAF in southern California.

read more

SIMULTAN - Sinkhole Instability: integrated MULTi-scale monitoring and ANalysis
The joint project SIMULTAN aims to develop and apply an early recognition system of sinkhole instability, unrest and collapse in Germany.

read more

In a series of geophysical experiment we study deep structures and geodynamic processes in the Tien Shan and Pamir collision zones, central Asia. The magnetotelluric (MT) component addresses topics such as middle crustal flow, stress relaxation due to partial melting and fluid release in continental subduction processes.

read more