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Multibeam bathymetry raw data (Kongsberg EM712 entire dataset) of RV HEINCKE during cruise HE628
No full textRaw bathymetry data were collected using the ship's own Kongsberg EM 712 multibeam echosounder during the RV Heincke cruise HE628 FJORDGAS. The cruise took place between 2023-09-04 and 2023-10-01 (Longyearbyen, Svalbard - Stavanger, Norway). The expedition focused on mapping seafloor gas discharge in the western fjords of Svalbard, where bathymetric surveys took place between 2023-09-04 and 2023-09-24. Transit data were collected between 2023-09-24 and 2023-09-30 and are of less quality due to the bad weather conditions on the way to Stavanger. Data are unprocessed and therefore contain incorrect depth measurements (artifacts). Sound velocity profiles (SVP) were regularly collected in all the working areas and are integrated into the raw files. Data can be processed e.g. with the open source software package MB-System (Caress, D. W., and D. N. Chayes, MB-System: Mapping the Seafloor, http://www.mbari.org/products/research-software/mb-system/, 2022)
Multibeam bathymetry raw data (Kongsberg EM710 entire dataset) of RV METEOR during cruise M207
No full textRaw multibeam bathymetry data were collected aboard RV METEOR during cruise M207 using a 70 - 100 kHz Kongsberg EM 710 multibeam echosounder. The expedition took place during 2025-01-05 – 2025-02-11 from Belem (Brazil) to Mindelo (Cape Verde) in the Central Atlantic. The major aims of M207 are to investigate the variability of the western boundary current circulation off South America and to contribute to the assessment of the variability of the Atlantic Meridional Overturning Circulation (AMOC) at 11S. Data were recorded within the EEZ of Brazil as well as outside EEZs. Sound velocity profiles (SVP) were applied on the data for calibration. Please see environmental data and the cruise report for details. The data are unprocessed and can therefore contain incorrect depth measurements (artifacts) if not further processed. Note that refraction errors may occur when no proper SVP is applied. Data acquisition was done by GEOMAR Helmholtz Centre for Ocean Research, provision of the data is supported by the DAM Project Underway Research Data and published according to the FAIR principles
Soil Temperature Measurements, 2019–2023, Turkana Basin Institute Research Centers, Kenya
No full textSoil temperatures were recorded using HOBO Pendant Temperature Data Loggers buried at Turkana Basin Institute (TBI) Research Centers from 2019–2023. Twelve loggers were deployed at TBI-Ileret beginning in September 2019 through January 2021. Four were buried in full sun at 10, 30, 60, and 90 cm depths, another four under shade cover of thick brush, and three in a partially shaded location at 10, 30, and 60 cm. Six loggers were buried at TBI-Turkwel in January 2020 through February 2021 at 10, 30, and 50 cm under sun and shaded conditions. The second deployment began in July 2021 at both research centers, including sun and shade profiles at Turkwel and a full sun profile at Ileret. A third deployment using the same profiles at both sites followed shortly after the second, from June 2022 until early July 2023. Sensor battery failure occurred part way through the data collection periods on several sensors during each deployment, resulting in incomplete records for some depth-condition combinations
Master track of MARIA S. MERIAN cruise MSM-X19 in 1 sec resolution (zipped, 43 MB)
No full textRaw data acquired by position sensors on board RV MERIAN during expedition MSM-X19 were processed to receive a validated master track which can be used as reference of further expedition data. During MSM-X19 the motion reference unit Kongsberg SeaTex AS MRU-5 combined with Kongsberg SeaTex AS Seapath 320 and the GPS receivers Trimble SPS855 and SAAB R4 were used as navigation sensors. Data were downloaded from DAVIS SHIP data base (https://dship.bsh.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
Master track of HEINCKE cruise HE655/2 in 1 sec resolution (zipped, 9 MB)
No full textRaw data acquired by position sensors on board RV Heincke during expedition HE655/2 were processed to receive a validated master track which can be used as reference of further expedition data. During HE655/2 the inertial navigation system IXSEA PHINS III and the GPS receivers Trimble Marine SPS461 and SAAB R5 SUPREME NAV were used as navigation sensors. Data were downloaded from DAVIS SHIP data base (https://dship.awi.de) with a resolution of 1 sec. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
Munition compound data for water samples collected from the entire German part of the Baltic Sea during ALKOR cruise AL590 in March 2023
No full textWe present munition compound data from the analysis of water column samples collected from the entire length of the German waters of Baltic Sea in March 2023 during ALKOR cruise AL590. Water column samples were collected from 93 sampling stations along a transect stretching from Flensburg Fjord to Usedom. Surface and deep-water samples were collected using a rosette of Niskin bottles. A CTD profile was also attached to the Niskin rosette frame. Samples (1L) were extracted onboard onto solid phase extraction (SPE) columns. Munition compounds were eluted from the SPE columns using acetonitrile, concentrated and reconstituted in 50% methanol/water. The samples were analyzed by ultra high-performance liquid chromatography and high-resolution, atmospheric pressure chemical ionization mass spectrometry
Zr/Rb XRF and calculated current velocities IODP Site 382-U1537
No full textThis dataset contains X-ray fluorescence (XRF) and calculated bottom current velocities for IODP Site U1537. The sediment cores were collected aboard the JOIDES Resolution in 2019 during IODP expedition 382 to the Antarctic Iceberg Alley. XRF measurements were conducted with an Avaatech core scanner in 2019 at the IODP Gulf Coast Repository in College Station, Texas. Following the method of McCave et al., 2006/2017, Sortable Silt measurements and XRF calibration was conducted at the Alfred-Wegener-Institute in Bremerhaven, Germany between late summer of 2020 and the end of 2021. The aim of this study is to provide a method of XRF-derived grain size and ultimately current velocity measurements that allows for the fast and reliable interpretation of long sediment cores
Whale sightings during POLARSTERN cruise PS143/2
No full textData on whale distribution and abundance in the polar oceans is rather sparse, as implementing the standard surveying method, line-transect surveys, is challenging and costly. To overcome this problem, we initiated a program to electronically log all opportunistic cetacean sightings during all Polarstern expeditions through the nautical officer on watch. Opportunistic (visual) sightings by naked eye were logged during Polarstern Cruise PS143/2 (Tromsø – Tromsø) by the nautical officer on duty using a customized Software package (WALOG, WhAleLOGger) installed on a touch screen laptop located on the ship's bridge. Species were identified by naked eye or handheld binoculars (7x50) to the lowest possible taxonomical level and assigned a "certainty" level of identification. The number of animals were counted if possible or estimated for larger groups. Whenever identification to species level was not possible, the next identifiable taxonomical category was assigned. Information on sighting position, date and time are automatically transferred from the ship's DAVIS-Ship System (https://dship.awi.de/) to the WALOG software at the time of logging. Photographs were taken, if possible, for retrospective analysis. All data of acquired sightings were retrospectively validated by a marine biologist and converted to a standard format. To this end, plausibility of sighting time, location, standardization of species names, eventual comments added at the time of sighting, as well as additional information such as photographs (if available) were checked either to verify or improve species identification. Datasets are used in species distribution modelling and to inform interested parties about occurrences