Walter, Maren; Mette, Jonathan; Renzelmann, Henri (2026): Raw noble gas data from RV SONNE cruise SO301 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.989654
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Published: 2026-01-30 • DOI registered: 2026-02-28
Abstract:
This dataset contains raw noble gas data from water samples collected during the cruise SO301 at the Rodriguez Tripple Junction, Indian Ocean. Samples were taken either with the CTD rosette water sampling system (CTD) or with a trace-metal-free titanium rosette (TMR) from the Constructor University Bremen. As the TMR has no live data connection to the ship, sample bottles are closed by pre-progamming pressure thresholds. The decision for sampling depths was in general guided by previous CTD casts at the same location. Additional metadata was taken from the corresponding rosette system. The stations were executed in winter 2023/24 to detect possible hydrothermal plumes at the Kairei Vent Site and to assess the dispersal of hydrothermal plumes. From the isotope ratio different water masses can be distinguished. The samples were taken from Niskin bottles into gas tight copper tubes and transported to the Bremen Helium Isotope Laboratory. For the analysis, the samples were extracted with an ultra high vaccum system and transferred into a fully automated mass spectrometric system, which is composed of a two stage cryogenic chamber and a quadrupole and a sector-field mass spectrometer. The system as well as the performance is described in detail in Sültenfuß et al. (2009). The results of double samples taken for control purposes were averaged.
Keyword(s):
Related to:
Engels, Martin; Barckhausen, Udo; Bartels, Thies; Bauer, Benedikt; Behrens, Thomas; Belleville, Morgane; Dannowski, Anke; Demir, Ümit; Deppe, Joachim; Ebert, Timo; Ehrhardt, Axel; Filbrandt, Christian; Fröhberg, Nico; Gallucci, Luigi; Gomes de Souza, Berenice; Heyde, Ingo; Jegen, Anna; Kuckuck, Jan; Ladage, Stefan; Lücke, Oscar; Lutz, Rüdiger; Mette, Jonathan; Pedre, Ignacio; Raphael Deeban Raj, Shareen; Schauer, Michael; Schnabel, Michael; Schramm, Bettina; Steinborn, Peter; Renzelmann, Henri; Wegener, Gunter (2024): Seismic Imaging at the Central Indian Ridge: Structure and Formation of Oceanic Core Complexes, Cruise No. SO301, November 22, 2023 - January 4, 2024, Port Louis - Port Louis (Mauritius). SONNE-Berichte, Begutachtungspanel Forschungsschiffe, SO301, 127 pp, https://doi.org/10.48433/cr_so301
Sültenfuß, Jürgen; Roether, Wolfgang; Rhein, Monika (2009): The Bremen mass spectrometric facility for the measurement of helium isotopes, neon, and tritium in water. Isotopes in Environmental and Health Studies, 45(2), 83-95, https://doi.org/10.1080/10256010902871929
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. GPF22-1_046: KaBa - Ramifications of Venting at the Kairei Hydrothermal Field for Bathypelagic Microbial Processes in Consort With Carbon and Metal Cycling
Coverage:
Median Latitude: -25.326548 * Median Longitude: 70.016372 * South-bound Latitude: -25.463300 * West-bound Longitude: 69.378500 * North-bound Latitude: -25.294850 * East-bound Longitude: 70.062300
Date/Time Start: 2023-11-26T08:21:09 * Date/Time End: 2023-12-31T01:53:45
Minimum DEPTH, water: 19.091000 m * Maximum DEPTH, water: 3024.810000 m
Event(s):
SO301_2-1 * Latitude: -25.463300 * Longitude: 69.378500 * Date/Time: 2023-11-26T08:20:11 * Elevation: -3001.4 m * Campaign: SO301 (SCIROCCO) * Basis: Sonne_2 * Method/Device: CTD/Rosette (CTD-RO) * Comment: SS-CTD
SO301_5-1 * Latitude Start: -25.320417 * Longitude Start: 70.040383 * Latitude End: -25.320550 * Longitude End: 70.040400 * Date/Time Start: 2023-11-27T04:13:19 * Date/Time End: 2023-11-27T18:48:27 * Elevation Start: -2428.1 m * Elevation End: -2438.6 m * Campaign: SO301 (SCIROCCO) * Basis: Sonne_2 * Method/Device: CTD/Rosette (CTD-RO) * Comment: SS-CTD Tow-Yo
SO301_7-1 * Latitude Start: -25.316000 * Longitude Start: 70.042700 * Latitude End: -25.324933 * Longitude End: 70.038800 * Date/Time Start: 2023-11-28T01:35:35 * Date/Time End: 2023-11-28T11:41:53 * Elevation Start: -2313.8 m * Elevation End: -2639.3 m * Campaign: SO301 (SCIROCCO) * Basis: Sonne_2 * Method/Device: CTD/Rosette (CTD-RO) * Comment: SS-CTD Tow-Yo
Comment:
Nml/kg, mass concentration = normal milliliter per kilogram
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Walter, Maren | |||
| 2 | DATE/TIME | Date/Time | Walter, Maren | CTD, Sea-Bird SBE 911plus | Geocode | |
| 3 | Bottle number | Bottle | # | Walter, Maren | ||
| 4 | Device type | Device | Walter, Maren | |||
| 5 | DEPTH, water | Depth water | m | Walter, Maren | CTD, Sea-Bird SBE 911plus | Geocode – Depth from CTD pressure sensor |
| 6 | Sample mass | Samp m | g | Walter, Maren | Ultra high vacuum (UHV) mass spectrometry | |
| 7 | Helium-4 | 4He | 10-5 ml/kg | Walter, Maren | Ultra high vacuum (UHV) mass spectrometry | Nml/kg, mass concentration of 4He isotope |
| 8 | Helium-3 | 3He | 10-5 ml/kg | Walter, Maren | Ultra high vacuum (UHV) mass spectrometry | Nml/kg, mass concentration of 3He isotope |
| 9 | Neon | Ne | 10-5 ml/kg | Walter, Maren | Ultra high vacuum (UHV) mass spectrometry | Nml/kg, mass concentration of total 20Ne + 22Ne isotopes |
| 10 | Helium-3/Helium-4 ratio | 3He/4He | 10-4 | Walter, Maren | Ultra high vacuum (UHV) mass spectrometry | |
| 11 | Neon/Helium ratio | Ne/He | Walter, Maren | Ultra high vacuum (UHV) mass spectrometry | ||
| 12 | δ Helium-3 | δ3He | ‰ | Walter, Maren | Ultra high vacuum (UHV) mass spectrometry | 3He/4He isotope ratio as 100 x ([3He/4He]obs/[3He/4He]atm.- 1) |
| 13 | δ Neon-22 | δ22Ne | ‰ | Walter, Maren | Ultra high vacuum (UHV) mass spectrometry | 22Ne/20Ne isotope ratio as 100 x ([22Ne/20Ne]obs/[3He/4He]atm.- 1) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
960 data points