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Master track from POLAR 5 flight P5-256_COMPEX-EC_2025_2504130701 in 1 sec resolution (zipped, 974 KB)
No full textCarbonate record during the last 8 Ma from IODP Site 383-U1543
No full textThis dataset presents a CaCO3 record from IODP Site 383-U1543 in the Southeast Pacific. The carbonate record covers the last 8 Mrys (average resolution 0.33 ka) and dates back to the late Miocene. The drill cores were recovered during IODP 383 expedition "Dynamics of Pacific Antarctic Circumpolar Current (DYNAPACC)" with R/V JOIDES Resolution in 2019 (54°35.06ʹS, 76°40.59ʹW; 3,860 m water depth; Lamy et al., 2021). The content of CaCO3 was determined by a linear calibration between Ca intensities (X-ray fluorescence (XRF) scanning with an Avaatech XRF Core Scanner) and discrete shipboard CaCO3 measurements performed during IODP Expedition 383 (Lamy et al., 2021; doi:10.14379/iodp.proc.383.2021)
Antarctic Circumpolar Current strength during the late Miocene from IODP Site 383-U1541
No full textThis dataset presents a record of the Antarctic Circumpolar Current (ACC) strength during the late Miocene from IODP Site 383-U1541 in the Central South Pacific. The drill cores were recovered during IODP 383 expedition "Dynamics of Pacific Antarctic Circumpolar Current (DYNAPACC)" with R/V JOIDES Resolution in 2019 (54° 12.756′ S, 125° 25.540′ W, 3,604 m water depth; Lamy et al., 2021; doi:10.14379/iodp.proc.383.2021). The ACC strength record represents an extension of the published 5.3 Ma old record of bottom current strength to 8 Ma (Lamy et al., 2024; doi:10.1038/s41586-024-07143-3) and bases on calibrated logarithmic count ratio of the XRF-scanned zirconium to rubidium (ln (Zr/Rb))
Immobilisation dose rates for Weddell seals during expedition ANT-Land_2024_SEAEIS (NEU2024)
No full textWeddell seals (Leptonychotes weddellii) were immobilised during expedition ANT-Land_2024_SEAEIS (NEU2024) for the purpose of deployments with infrared (IR) camera loggers (CAM). The IR-CAM deployments (n=13) were located at Atka-Bay in the vicinity to the Neumayer Station III (DE), eastern Weddell Sea. The seals were searched by Skidoo on fast (bay) ice and captured along tidal cracks within the bay and immobilised and instrumented with infrared video camera loggers (Little Leonardo, JP) to investigate their foraging behaviour in the context of ROV-borne imagery and sea ice features within the Atka Bay
Master tracks in different resolutions of HEINCKE cruise HE661, Bremerhaven - Bremerhaven, 2025-05-15 - 2025-05-21
No full textRaw data acquired by position sensors on board RV Heincke during expedition HE661 were processed to receive a validated master track which can be used as reference of further expedition data. During HE661 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
Light effects on the vertical positioning of the freshwater jellyfish (Craspedacusta sowerbii Lankester, 1880)
No full textWe experimentally manipulated the presence of light and light intensity (F = 36.7 μmol m⁻² s⁻¹; D = 0 μmol m⁻² s⁻¹; L = 4.8 μmol m⁻² s⁻¹; M = 21.4 μmol m⁻² s⁻¹) and tested their effects on the vertical positioning of the freshwater jellyfish (Craspedacusta sowerbii) medusae. For the experiments, approximately 100 C. sowerbii medusae were collected in August 2017 in two lakes (Haager Weiher and Leitner Weiher) in Bavaria, Germany. Testing was carried out at Seeon Limnological Station in close vicinity to the collection site. The experimental columns were 7.4 cm in diameter and 170 cm high and were marked with horizontal lines every 5 cm for visual position estimation. Four replicates run in parallel. One C. sowerbii medusa was used in each experimental column. Data cover three light treatments, each run twice: 1) 16:8 h full light (F)–dark (D) light intensity cycles (nF = 716, nD = 428), 2) 16:8 h full light (F)–full dark (D) light intensity cycles complemented with low (L) and medium (M) light intensities (nF = 96, nM = 96, nL = 48, nD = 288), and 3) altered light intensities in approximately 2-hour periods randomly among dark, low, medium, and full light intensities (nF = 96, nM = 76, nL = 72, nD = 336). Results show that light alone was sufficient to trigger a vertical position change of jellyfish towards the water surface, especially high light
PortMeteO disdrometer measurements during METEOR cruise M207
No full textThis dataset describes the non-standard meteorological data collected using the newly developed portable meteorological observatory (PortMeteO) during the METEOR Expedition M207 from Belem, Brazil (Jan 3rd, 2025) to Mindelo, Cabo Verde (Feb 11, 2025). Apart from validating the setup, the main purpose was to observe different properties of Saharan dust outbreaks.
The ceilometer and disdrometer where operated 24/7 while the sun photometers where used at regular intervals during the day whenever clear sky conditions prevailed. Radiosondes where operated during between Jan 27 and Jan 30, 2025 to capture further details on the dust plume associated with a Saharan dust outbreak
Stable isotope and element/Calcium ratios of Plio/Pleistocene planktic foraminifers (G. bulloides, N. pachyderma, G. umbilicata & G. inflata) of core SO264_28-2
No full textSediment cores from the volcanic Emperor Seamount Chain obtained during RV SONNE cruise SO264 (SONNE-EMPEROR) in August 2018 allow us to reconstruct lateral changes in the subarctic and subtropical gyres in the pelagic North Pacific over the last ~3.4 million years. This dataset comprises planktic stable carbon (δ13C) and oxygen isotope (δ18O) data, as well as foraminiferal element/Calcium ratios from gravity core SO264-28-2, which was recovered from Suiko Seamount (44°51.547 N 170°03.997 E) from 1935 m water depth. Measurements were performed on the planktic foraminiferal species Globigerina bulloides, Neogloboquadrina pachyderma sinistral and dextral, Globigerina umbilicata, and Globorotalia inflata. Sampling and analytical studies were carried out from 0.00–7.62 m core depth at ~2 cm spatial resolution. The isotope analyses were performed on a Thermo Scientific MAT 253 mass spectrometer with an automated Kiel IV carbonate preparation device. Trace metal analyses were performed on a VARIAN 720-ES Axial ICP-OES