Title: Senior Scientist
Country/Region: Germany
Period: 2023/1/10-2023/3/30
Theme: Seismic (and electromagnetic) structure of the oceanic lithosphere – comparison between Pacific and Atlantic Oceans
Host: Kiyoshi BABA
Introduction: During my studies and scientific career, I gained expertise in the acquisition, processing and interpretation of marine multi-channel seismic reflection data, seismology (marine and terrestrial, Earth structure, seismicity), wide-angle seismic reflection and refraction studies, gravity, and bathymetry. I participated in and also lead various marine geoscientific expeditions.
My current research focus is threefold: (1) coupling of the upper mantle and the Earth’s crust/lithosphere, (2) deep structure and development of passive continental margins, submarine plateaus and ocean gateways, and (3) understanding the basin/gateway opening and sedimentation history, past and present ocean current systems, and slope (in)stability of the high-latitude margins.
At present my research involve studies of:
• Tectonic and climate evolution of the Fram Strait / Arctic-Atlantic Gateway
• Seismicity of the Laptev Sea Rift
• Structure of the northern Greenland continental margin
• Slope stability at the northern Svalbard continental margin
• Upper mantle structure in the vicinity of the Tristan da Cunha Hot Spot
• Upper mantle structure of the Namibian continental margin
I consider myself as an open-minded, co-operative, and well-respected researcher with a high reputation in the Arctic and North Atlantic community and an excellent scientific record.
Research Report:
1. Introduction
In the original application for my research stay we proposed to do a comparison study on crust and lithosphere structure derived from receiver function analyses from Japanese ocean bottom seismometer (OBS) data from the Pacific Ocean and German OBS data from the Atlantic Ocean. Since, in the meantime (I arrived two years later as planned due to pandemic restrictions), receiver functions from the Japanese data set NOMan in the NW Pacific was already analysed by a PhD student that was just about to finish her promotion during my early stay. Therefore, we decided to change to topic of my research stay to looking for splitting of SKS and SKKS waves recorded in the NOMan data set (Takeuchi et al. 2017), to get some additional information on seismic anisotropy in the NW Pacific upper mantle.
In the original application for my research stay we proposed to do a comparison study on crust and lithosphere structure derived from receiver function analyses from Japanese ocean bottom seismometer (OBS) data from the Pacific Ocean and German OBS data from the Atlantic Ocean. Since, in the meantime (I arrived two years later as planned due to pandemic restrictions), receiver functions from the Japanese data set NOMan in the NW Pacific was already analysed by a PhD student that was just about to finish her promotion during my early stay. Therefore, we decided to change to topic of my research stay to looking for splitting of SKS and SKKS waves recorded in the NOMan data set (Takeuchi et al. 2017), to get some additional information on seismic anisotropy in the NW Pacific upper mantle.
View All
Fiscal Year: 2022
Fiscal Year: 2022