| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Sonne | SO299 | 06.06.2023 - 29.07.2023 | DYNAMET |
Pacific Ocean |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Brandl Philipp A. | Helmholtz Centre for Ocean Research Kiel (GEOMAR) | Townsville | Singapure |
Ziel der Reise / Objectives of Cruise:
Research cruise SO299 DYNAMET aimed at studying the processes of arc rifting, metallogeny and microplate evolution through an integrated geodynamic, magmatic and hydrothermal approach. Study area was the Bismarck Archipelago of Papua New Guinea in the southwestern Pacific. The Tabar-Lihir-Tanga-Feni island chain is known for high-grade Au mineralisation and active ore formation can be observed at the seafloor. Geophysical methods such as seismology and hydroacoustic mapping were combined with magnetotellurics and gravimetry to reveal crustal structure and tecontic framework. Ground-truthing was complemented by chain bag dredging, video-guided grab and gravity core sampling as well as dives with the remotely operated vehicle Kiel 6000. The cruise left Townsville on 6 June, operated in the working area between 13 June and 15 July and arrived into Singapore on 29 July 2023.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| GEOMAH | Brandl Philipp A. | 4820 | km | D71 Current profiler (e.g. ADCP) |
Both ship-mounted ADCP instruments (ADCP 38 and ADCP 75) were used to collect underway current data | yes |
| GEOMAH | Brandl Philipp A. | 2 | stations | D90 Other physical oceanographic measurements |
Sound velocity profiles were acquired using the ship-based CTD at water depths of 4000 and 2500 m | yes |
| GEOMAH | Brandl Philipp A. | 20 | stations | G01 Dredge |
Chain bag dredges of GEOMAR, Kiel, were used for rock sampling | no |
| GEOMAH | Brandl Philipp A. | 16 | stations | G02 Grab |
The TV-guided grab of GEOMAR, Kiel, was used for targeted rock sampling and visual reconnaissance | no |
| GEOMAH | Petersen Sven | 7 | stations | G04 Core-soft bottom (no. of cores) |
A 3 m-long gravity corer (with 1.7 t weight) of GEOMAR, Kiel, was used for sediment coring | no |
| BGRH | Heyde Ingo | 4820 | km | G27 Gravity measurements |
The KSS32-M marine gravimeter of BGR, Hannover, was installed during SO299 and measurements were recorded at 1 Hz | no |
| BGRH | Heyde Ingo | 20 | stations | G71 In-situ sea floor measurements |
The heatflow probe of BGR, Hannover, was deployed to measure the naturally occurring heat flow as well as the heat flow density | no |
| GEOMAH | Kopp Heidrun | 18 | stations | G72 Geophysical measurements made at depth (below near surface and above seafloor) |
Ocean Bottom Seismometers (OBS) instruments were deployed for ~3 weeks on the seafloor west and south of Lihir Island | no |
| GEOMAH | Jegen-Kulcsar Marion | 16 | stations | G72 Geophysical measurements made at depth (below near surface and above seafloor) |
Ocean Bottom Magneto-Telluric (OBMT) instruments were deployed for ~3 weeks on the seafloor west and south of Lihir Island | no |
| GEOMAH | Brandl Philipp A. | 4820 | km | G74 Multi-beam echosounding |
The ship mounted Kongdberg Maritime SIMRAD EM122 was used during 30 dedicated profiles and during all transits between stations in the working area as well as in international waters on the transit from the working area to the port of arrival | yes |
| GEOMAH | Brandl Philipp A. | 4820 | km | G90 Other geological or geophysical measurements |
The ship mounted ATLAS Parasound P70 system was used parallel to the multi beam echosounding to record sub-bottom profile data | yes |
| GEOMAH | Brandl Philipp A. | 178 | stations | H00 Stations |
- | yes |
| BRIRE | Briese Schifffahrts GmbH & Co. WTD | 1 | n miles | H80 Other physical measurements |
Underway measurements udring the whole trip such as coordinates, depth, meteorological parameter and so on | yes |
| GEOMAH | Brandl Philipp A. | 12 | stations | R03 Robotic vehicle deployments |
The Remotely Operated Vehicle (ROV) Kiel 6000 was deployed on 12 dives for visual reconnaissance, mapping, in situ temperature measurements as well as rock, soft sediment, fluid and gas sampling. Eater depths ranged from 5100-1600 m | no |