Arctic Ocean - multichannel seismic reflection profiles recorded during RV POLARSTERN cruise PS87 ...

• Main Authors: Weigelt, Estella, Jokat, Wilfried, Eisermann, Hannes
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Arctic Ocean; Lomonosov Ridge; reflection seismics; SEGY-format; File name; File format; File size; Uniform resource locator/link to file; Seismic reflection profile; PS87; Polarstern; Marine Geophysics @ AWI AWI_GeoPhy; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.919774; https://doi.pangaea.de/10.1594/PANGAEA.919774

A set of multichannel seismic reflection lines across the southeastern Lomonosov Ridge and adjacent basins was collected in 2014 during RV Polarstern cruise ARK XXVIII/3 (PS87). The data provide constraints on the coupled evolution of ocean circulations, deposition regime and regional tectonic processes.The survey set-up for most lines comprised a streamer of 3000 m length (240 channels), and a 24-liter G-gun array. Shots were fired every 15 s resulting into a shot point spacing of 35-40 m. Data were recorded for 12 s at a sample rate of 1 ms. The seismic data processing comprised sorting in a CDP interval of 25 m (= max. fold 145), and velocity analysis (every 100 CDP = 2.5 km). Interval velocities for the seismic units are adopted from the stacking velocities. After the removal of noisy traces and spherical divergence correction the traces were stacked and migrated with a finite-difference time-migration. For a successful suppression of sea floor multiple an f-k filter was applied. In general, the data ...