| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Sonne | SO300-2 | 01.10.2023 - 19.11.2023 | INDEX |
Indian Ocean |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Kuhn Thomas | Bundesanstalt fur Geowissenschaften und Rohstoffe, Hannover | Port Louis | Port Louis |
Ziel der Reise / Objectives of Cruise:
Cruise SO300/2 was part of the BGR program for the exploration of massive sulfides in the Indian Ocean, the INDEX project, which was started in 2015 with signing an exploration contract between BGR and the International Seabed Authority. Within the INDEX project BGR carries out geological and geophysical exploration as well as environmental baseline studies on the southern Central Indian Ridge (CIR) and the northern Southeast Indian Ridge (SEIR). The geological work during SO300/2 included mapping and sampling of massive sulfide sites with the Canadian ROV ROPOS, video mapping with the BGR-own TV sled STROMER, high-resolution bathymetry with BGR-own deep-towed HOMESIDE, sediment sampling using a gravity corer as well as drilling with the BGR-own, ROV-mounted Remotely Operated Coring System (ROCS). The environmental baseline studies included the recovery and re-deployment of sediment trap moorings, a baited fish camera system, (micro)biological investigations with ROV ROPOS, and sampling and analysis of hydrothermal fluids. Both exploration and environmental investigations were carried out in eight different working areas located along the entire length of the BGR license area which stretches about 1000 km along both the CIR and SEIR. In total 128 stations were realized during SO300/2.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| SAMSO | Sweetman Andrew | 8 | stations | B14 Pelagic fish |
Baited fish camera deployed in different locations for 24 hours each | no |
| BRIRE | Briese Schifffahrts GmbH & Co. WTD | 1 | n miles | D71 Current profiler (e.g. ADCP) |
VMADCP 38+75 kHz | yes |
| BGRH | Kuhn Thomas | 22 | stations | G04 Core-soft bottom (no. of cores) |
Gravity cores of sediments and altered sulfides | no |
| BGRH | Kuhn Thomas | 31 | stations | G74 Multi-beam echosounding |
High-resolution multibeam with deep-towed tool. | no |
| IFGEO | Lahajnar Niko | 129 | stations | H00 Stations |
- | yes |
| IFGEO | Lahajnar Niko | 18 | profiles | H10 CTD-Stations |
CTD/rosette station to sample and measure water column | no |
| BRIRE | Briese Schifffahrts GmbH & Co. WTD | 1 | n miles | H80 Other physical measurements |
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on | yes |
| BGRH | Kuhn Thomas | 25 | stations | R03 Robotic vehicle deployments |
Remotely Operated Vehicle for geological mapping and sampling, hydrothermal fluid sampling as well as for biological sampling mainly on active and inactive hydrothermal sites. | no |
Verankerungen / Moorings
| Institut Institute |
Wissenschaftler Scientist |
Typ der Messungen Type of measurements |
Kommentar Comments |
geogr.Breite Latitude |
geogr.Länge Longitude |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| IFGEO | Lahajnar Niko | B73 | Mooring consists of three sediment traps, current meters and passive sampler plates with a total length of 1632 m. | 27° 38.7' S | 73° 52.4' E | - |
| IFGEO | Lahajnar Niko | B73 | Mooring consists of three sediment traps, current meters and passive sampler plates with a total length of 2330 m. | 23° 52.4' S | 69° 36.0' E | - |
| IFGEO | Lahajnar Niko | B73 | Mooring consists of two sediment traps, current meters and passive sampler plates with a total length of 602 m. | 26° 28.0' S | 71° 41.4' E | - |
| IFGEO | Lahajnar Niko | B73 | Mooring consists of two sediment traps, current meters and passive sampler plates with a total length of 602 m. | 25° 28.0' S | 69° 55.6' E | - |