NORTH ATLANTIC & ARCTIC
SEISMOLOGY
PLATE TECTONICS & RELATED GEODYNAMIC PROCESSES
INTEGRATED & JOINT ANALYSIS
Seismological studies of the connection between geodynamic processes in Greenland and Iceland
During the project funded by the Carlsberg Foundation, I will use recently acquired data from East Greenland and available data fro Iceland to develop a joint body wave-surface wave-receiver function inversion for the Greenland-Iceland-Ridge, Iceland and East Greenland.
Geodynamic evolution of the North Atlantic and Arctic
During the last years I have been working with different projects in the North Atlantic-Arctic region. The results have made me rethink some aspects of the North Atlantic evolution. At Durham University, I am working closely with Gillian Foulger, with whom I have organised two workshops on the North Atlantic. As a result of these two and another workshop, the participants will prepare a number of review articles with the aim to define a new paradigm. I have also organised a topical session for the GSA meeting 2017 in Seattle, together with Gillian Foulger, Randell Stephenson, Fiona Darbyshire and Hans Thybo.
Stress field and lithospheric structure of Brazil
We investigate the effect of different models for crustal and lithospheric mantle structure on the Brazilian/South American stress field and compare the results to observations. Partners on this project are Jordi Julia and colleagues from the Federal University of Rio Grande do Norte.
Crustal receiver function inversion for Vs and Vp
In collaboration with Stephane Rondenay (University of Bergen), I am developing a quick and robust receiver function inversion code to estimate layered Vp and Vs structure. The first application will be a crustal model of Scandinavia, next, a crustal model of North America, followed by a global model.
Together with Tuna Eken (Istanbul Technical University) and one of his students, we are working on a receiver function inversion to resolve upper crustal S-wave velocities and possibly anisotropy in the North Anatolian Fault Zone. The aim is to identify structural relationships across and along the fault zone.
Crustal and upper mantle structure of SW Sweden
In collaboration with Niels Balling (Aarhus University), we have deployed 9 seismometers along the Skagerrak-Kattegat coast in southwestern Sweden and
northeastern Denmark. The goal is to complement existing data and collect information on the crustal and upper-mantle structure. Special focus is on a south-dipping upper mantle structure imaged
by reflection seismics (Lie
& Husebye, 1994). Preliminary receiver functions show promising results, but data coverage and quality needs improvement. The data collection phase is finished.
Receiver function imaging Brazilian Cratons and sedimentary basins
I am working together with a group of geophysicists from Brasilia under Jose Soares on CCP receiver function imaging of various teleseismic arrays. The focus is on the imaging of the crustal structure and possible suture zones in Brazil.
Topography of the North Atlantic Realm - TOPOREAL
Circum Arctic Lithosphere Evolution - CALE &
Ellesmere Island Lithosphere Experiment - ELLITE
C. Schiffer, R. A. Stephenson, 2017, Regional crustal structure of Ellesmere Island, Arctic Canada. In press with Geological Society of London Special Publications
R.A. Stephenson, K. Piepjohn, C. Schiffer, W. vonGosen, G. Oakey, 2017, Integrated crustal-geological cross-section of Ellesmere Island. Geological Society of London Special Publications
SCANARRAY - field work