Lenz Kai-Frederik frederik.lenz@ifg.uni-kiel.de 0000-0003-3043-8399 Gebhardt Andrea Catalina catalina.gebhardt@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/catalina-gebhardt.html 0000-0002-3227-0676 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Gross Felix felix.gross@ifg.uni-kiel.de 0000-0002-0749-829X Lohrberg Arne arne.lohrberg@ifg.uni-kiel.de 0000-0002-7976-6919 Krastel Sebastian sebastian.krastel@ifg.uni-kiel.de 0000-0002-5899-9748 2024 2D multichannel seismic reflection processed data (GI Gun working area dataset) of RV MARIA S. MERIAN during cruise MSM84, Labrador Sea dataset https://doi.org/10.1594/PANGAEA.964713 2024-02-27T07:15:20 Three 2D reflection seismic profiles from three glacial cross-shelf troughs of the Labrador Shelf, namely the Okak, Makkovik and Cartwright troughs, are presented. The data were collected onboard the Maria S. Merian during cruise and MSM84 using two different multi-channel streamers; a Geometrics GeoEel solid state digital high-resolution streamer (active length 75 m, channel spacing 1.5625 m; hereafter short streamer) and a digital Sercel high-resolution streamer system (active length 600 m, channel spacing 3.125 m; hereafter long streamer). Details regarding the used seismic systems can be found in the cruise report (doi:10.2312/cr_msm84). Data were processed using the commercial VISTA Desktop Seismic Data Processing Software (Schlumberger, version 2018). The standard processing approach included demultiplexing, bulk shifting, frequency filtering (Ormsby as well as in the FK-domain), spiking deconvolution, compensation of spherical divergence and common-midpoint (CMP) binning. The CMP bin size was set to 3.125 m for both datasets. For the short streamer a normal-move-out correction with a constant sound velocity of 1500 ms-1 was performed as the limited offset range of short streamer did not allow for a precise velocity analysis. Afterwards, a static correction was applied as the short streamer was towed close to the water surface. Finally, a CMP stack was calculated followed by a finite differences time migration. The dataset of the long streamer shows a strong receiver ghost, which is related to the tow depth of approximately 10 m below the water surface. This receiver ghost was suppressed. Afterwards, a data-driven velocity analysis was carried out by picking seismic velocities for every 500 CMPs. Normal-move-out correction, CMP stacking and a finite differences time migration were carried out using the velocity field. Finally, a white noise removal was performed. The objective of data recording on the Labrador Shelf is to map glacial landforms and reconstruct the dynamics of the Laurentide Ice Sheet in detail. Gebhardt Andrea Catalina catalina.gebhardt@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/catalina-gebhardt.html 0000-0002-3227-0676 Ohlendorf Christian ohlen@uni-bremen.de https://geographie.uni-bremen.de/index.php?option=com_jresearch&view=member&task=show&id=25 0000-0003-3794-7313 Gross Felix felix.gross@ifg.uni-kiel.de 0000-0002-0749-829X Matthiessen Jens jens.matthiessen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/jens-matthiessen.html 0000-0002-6952-2494 Schneider Ralph R ralph.schneider@ifg.uni-kiel.de 0000-0003-1453-9181 2020 Development of the Labrador Shelf During the Past Glaciations, Cruise No. MSM84, June 19 to July 16, 2019, St. John's (Canada) - St. John's (Canada) report MARIA S. MERIAN-Berichte, Gutachterpanel Forschungsschiffe MSM84 https://doi.org/10.2312/cr_msm84 78 pp Lenz K-L Gross Felix felix.gross@ifg.uni-kiel.de 0000-0002-0749-829X Kolling Henriette Marie henriette.kolling@ifg.uni-kiel.de 0000-0003-4198-941X Lohrberg Arne arne.lohrberg@ifg.uni-kiel.de 0000-0002-7976-6919 Couette Pierre-Olivier pierre-olivier.couette.1@ulaval.ca Ohlendorf Christian ohlen@uni-bremen.de https://geographie.uni-bremen.de/index.php?option=com_jresearch&view=member&task=show&id=25 0000-0003-3794-7313 Schneider Ralph R ralph.schneider@ifg.uni-kiel.de 0000-0003-1453-9181 Krastel Sebastian sebastian.krastel@ifg.uni-kiel.de 0000-0002-5899-9748 Gebhardt Andrea Catalina catalina.gebhardt@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/catalina-gebhardt.html 0000-0002-3227-0676 accepted Geomorphological analysis of grounding-zone wedges reveals glacial retreat processes on the Labrador Shelf journal article Marine Geology https://doi.org/10.1016/j.margeo.2024.107249 Lenz Kai-Frederik frederik.lenz@ifg.uni-kiel.de 0000-0003-3043-8399 Ancillary navigational metadata (ukooa) from 2D multichannel seismic reflection processed data (GI Gun working area dataset) of RV MARIA S. MERIAN during cruise MSM84, Davis Strait https://download.pangaea.de/reference/124070/attachments/anc_nav_ukooa_msm84_2D_mcs_processed_wad.zip -60.69127 -55.36282 54.48508 57.87487 -57.96575166666668 55.954745833333334 2019-07-02T15:26:00 2019-07-15T18:34:00 -346.1 -135.0 German Research Foundation DFG http://www.dfg.de/en/ https://doi.org/10.13039/501100001659 447580143 Glacial dynamics of the Laurentide Ice Sheet along a terrestrial-to-marine transect in East Canada (labsCAUs) https://gepris.dfg.de/gepris/projekt/447580143 MSM84_35-1 57.55352 -60.53132 -165.9 2019-07-02T15:26:00 57.87487 -60.69127 -255.7 2019-07-04T11:24:00 MSM84 MSM84 LABRADOR-GLACIALS LABRADOR-GLACIALS St. John's, Canada 2019-06-19T00:00:00 2019-06-19 St. John's, Canada 2019-07-16T00:00:00 2019-07-16 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Gebhardt, Andrea Catalina Gebhardt, Andrea Catalina doi:10.2312/cr_msm84 20190041 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Seismic SEIS Seismic Towed Receiver; cut out length: 681m MSM84_35-2 57.75692 -60.60248 -304.6 2019-07-02T17:59:00 57.82855 -60.67688 -265.2 2019-07-04T10:47:00 MSM84 MSM84 LABRADOR-GLACIALS LABRADOR-GLACIALS St. John's, Canada 2019-06-19T00:00:00 2019-06-19 St. John's, Canada 2019-07-16T00:00:00 2019-07-16 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Gebhardt, Andrea Catalina Gebhardt, Andrea Catalina doi:10.2312/cr_msm84 20190041 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Seismic SEIS Seismic Source MSM84_45-1 55.03128 -57.49725 -293.1 2019-07-09T15:34:00 55.31997 -57.49013 -135.0 2019-07-10T17:37:00 MSM84 MSM84 LABRADOR-GLACIALS LABRADOR-GLACIALS St. John's, Canada 2019-06-19T00:00:00 2019-06-19 St. John's, Canada 2019-07-16T00:00:00 2019-07-16 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Gebhardt, Andrea Catalina Gebhardt, Andrea Catalina doi:10.2312/cr_msm84 20190041 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Seismic SEIS Seismic Towed Receiver; cut out length: 681m MSM84_45-2 55.08977 -57.40898 -346.1 2019-07-09T16:32:00 55.27245 -57.52023 -155.4 2019-07-10T16:53:00 MSM84 MSM84 LABRADOR-GLACIALS LABRADOR-GLACIALS St. John's, Canada 2019-06-19T00:00:00 2019-06-19 St. John's, Canada 2019-07-16T00:00:00 2019-07-16 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Gebhardt, Andrea Catalina Gebhardt, Andrea Catalina doi:10.2312/cr_msm84 20190041 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Seismic SEIS Seismic Source MSM84_55-1 55.04738 -55.77123 -269.4 2019-07-13T21:00:00 55.13258 -56.18053 -280.7 2019-07-14T00:31:00 MSM84 MSM84 LABRADOR-GLACIALS LABRADOR-GLACIALS St. John's, Canada 2019-06-19T00:00:00 2019-06-19 St. John's, Canada 2019-07-16T00:00:00 2019-07-16 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Gebhardt, Andrea Catalina Gebhardt, Andrea Catalina doi:10.2312/cr_msm84 20190041 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Seismic SEIS Seismic Towed Receiver; cut out length: 147.5m MSM84_55-2 55.06458 -55.8559 -292.2 2019-07-13T21:42:00 54.48508 -55.36282 -167.5 2019-07-15T18:34:00 MSM84 MSM84 LABRADOR-GLACIALS LABRADOR-GLACIALS St. John's, Canada 2019-06-19T00:00:00 2019-06-19 St. John's, Canada 2019-07-16T00:00:00 2019-07-16 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Gebhardt, Andrea Catalina Gebhardt, Andrea Catalina doi:10.2312/cr_msm84 20190041 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Seismic SEIS Seismic Source 12 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Ship time for the cruise MSM84 was funded by the DFG under the award MerMet 17-49, Gebhardt, LABRADOR-GLACIALS. 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