PANGAEA_991494 Sediment echosounder raw data (Atlas Parasound P70 echosounder entire dataset) of RV MARIA S. MERIAN during cruise MSM120 Lenz, Kai-Frederik; Schneider, Ralph R; Papenmeier, Svenja; Brembach, Kerstin; Bauer, Benedikt; Thamm, Viktoria Sediment echosounder raw data (Atlas Parasound P70 echosounder entire dataset) of RV MARIA S. MERIAN during cruise MSM120 2026-03-23 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.991494 Investigator Kai-Frederik Lenz frederik.lenz@ifg.uni-kiel.de Earth Science Binary Object Binary Object (Media Type) Binary Object (File Size) Binary Object (MD5 Hash) File content DATE/TIME LATITUDE LONGITUDE Comment geoscientificInformation ATLAS Parasound P70 Deep-Sea Parametric Sub-Bottom Profiler Canada Hudson Bay MSM120 MSM120_0_Underway-4 PARASOUND Maria S. Merian 2023-08-17 2023-09-17 Complete 54.014072 66.531458 -85.76949000000002 -55.270838000000026 access rights needed CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 18887 data points text/tab-separated-values Schneider, Ralph R; Bauer, Benedikt; Besançon, Robin; Blanz, Thomas; Brembach, Kerstin; Hand, Ines; Hehl, Uwe; Huygen, Fynn; Kienast, Stephanie S; Kolling, Henriette Marie; Lenz, Kai-Frederik; Matzerath, Peter; Mikler, Monika; Moros, Matthias; Neumann, Thomas; Papenmeier, Svenja; Schuffenhauer, Ingo; Soth, Aidan; Thamm, Viktoria; To, Anna (2025): Hudson Bay System Paleoceanography Cruise No. MSM120, August 15, 2023 - September 20, 2023, St. John's (Canada) - Nuuk (Greenland). MARIA S. MERIAN-Berichte, Begutachtungspanel Forschungsschiffe, MSM120, 50 pp, https://doi.org/10.48433/cr_msm120

During cruise MSM120 (August 17 – September 17, 2023), sub-bottom profiles were acquired in the Labrador Sea and Hudson Bay using the hull-mounted PARASOUND DS3 (PS70) parametric echosounder on RV MARIA S. MERIAN. The PARASOUND system emits high-frequency primary signals (18–24 kHz) and secondary low-frequency signals (0.5–7 kHz) via a narrow 4.5° beam, enabling high-resolution imaging of small-scale seafloor structures and sediment layers down to ~150 m penetration in soft sediments. Data were recorded in single pulse, quasi-equidistant, and transmission-on-request ping modes depending on water depth and operational constraints. Beamforming corrected for vessel motion, and acquisition parameters (sample rate, recording window, and source level) were adapted for shallow and deep-water areas. Raw data including signal amplitude, phase, and system parameters were stored in Atlas Sound Data (ASD) format and exported in SEG-Y and PS3 formats. The dataset provides detailed sub-bottom information for sedimentological and geohazard studies, supporting high-resolution mapping of the Labrador Shelf, Labrador Sea, and Hudson Bay seafloor. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.991494"! ** Data publishing was realized by Henriette Kolling, Kiel University, Germany

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://doi.org/10.48433/cr_msm120 Hudson Bay System Paleoceanography Cruise No. MSM120, August 15, 2023 - September 20, 2023, St. John's (Canada) - Nuuk (Greenland) https://en.wikipedia.org/wiki/RV_Maria_S._Merian Maria S. Merian https://hdl.handle.net/10013/epic.26909.d007 ATLAS Parasound P70 Deep-Sea Parametric Sub-Bottom Profiler DIF 9.4 2026-03-23 2026-04-29