Primary seismic refraction data during cruise RV SONNE SO258/2 (INGON), Indian Ocean off Sri Lanka, profile AWI-20170400 ...

• Main Authors: Weigelt, Estella, Geissler, Wolfram H, Altenbernd-Lang, Tabea, Jokat, Wilfried, Werner, Reinhard
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2025
• Subjects: AWI Geophysics; DEPAS; Indian Ocean; Ocean-bottom seismometer; RV Sonne; Seismic refraction data; Sri Lanka; Event label; Station label; Date/time start; LONGITUDE; LATITUDE; ELEVATION; Relocation; Date/time end; Clock skew; Instrument; Recorder type; Recorder, serial number; Seismometer type; Seismometer, serial number; Hydrophone type; Releaser, serial number; Seismic channel assignment; Hydrophone gain; Sampling rate; SEGY file; Comment; Ocean bottom seismometer; SO258/2; Sonne_2; Marine Geophysics @ AWI AWI_GeoPhy; Indian; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.1594/pangaea.974478; https://doi.pangaea.de/10.1594/PANGAEA.974478

As part of the research project INGON (a collaboration between the Alfred Wegener Institute and the GEOMAR), two offshore seismic refraction profiles were obtained during Sonne cruise SO258 to study the separation of India and Antarctica. The acquired data set covers data of 30 stations recorded with three different types of Ocean Bottom Seismometer (OBS)-systems: 12 LOBSTER and 2 NAMMU systems of the AWI belonging to the DEPAS pool (German Instrument Pool for Amphibian Seismology) and 20 OBS systems of GEOMAR. 21 instruments were deployed for profile AWI-20170400 at an average distance of 13.5 km. The profile extends in a NW-SE direction and crosses the proposed prolongation of the 85°E Ridge. Profiling started on 02 August 2017 at 84.24122°N, 1.12148°E, and ended on 03 August 2017 at 82.37525°N, 3.38.813°E. One OBS (station 407) could not be recovered, one OBS (station 421) did not return data, but all other OBS worked and could be synchronized with the GPS clock upon recovery such that skew values ...