Ocean bottom seismics and acoustic surveys on the West-Svalbard margin – a study of local seismicity and its effect on methane seepage (21.3)

Introduction

Cruise CAGE21-3 with UiT’s research vessel R/V Helmer Hanssen was carried out to address the following objectives within the SEAMSTRESS project (Tectonic stress effects on Arctic methane seepage): 1- Recovery of 10 Ocean Bottom Seismometers (OBS) deployed last year north of the Knipovich Ridge-Molloy Transform Fault corner (see report CAGE20-5). 2- Conduction of an active source OBS experiment for the study of shear waves propagation in relation to local stress field and focused fluid flow. 3- Acquisition of seismic lines for completing a side survey for the FRAME-IODP proposal