| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Maria S. Merian | MSM17-1 | 24.11.2010 - 29.12.2010 | SPP 1375-SAMPLE |
South Atlantic Ocean |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Behrmann Jan | Leibniz-Institut fur Meereswissenschaften an der Universitat Kiel | Mindelo | Walvis Bay |
Ziel der Reise / Objectives of Cruise:
The objective of Cruise MSM 17/1 was to obtain wide-angle refraction seismic data, reflection seismic data, and high-resolution bathymetric data from the landfall area of Walvis Ridge, and the oceanic basins north (Angola Basin) and south (Walvis Basin) of the ridge. This is to be used to constrain the nature and architecture of the crust and lithosphere seaward of the Northern Namibian coast. Also, three ARGO Floats were deployed en route from Mindelo, teh strating port of the voyage. 24 Ocean Bottom Magnetotelluric Stations were deployed for a long-term recording, to be recovered later on Cruise MSM17/2. Airgun shots on two of the profiles (Profiles 4 and 5) were fired to be recorded at onshore seismometer stations deployed by GFZ Potsdam in the Kaoko Veld. R/V MARIA S. MERIAN set sail at 19:00 UTC, 24th November, 2010 at the port of Mindelo, Sao Vicente Island, Republic of Cape Verde, for the working area offshore Namibia. The equator was crossed at mid-day on Monday, 29th November. After arrival at the northern end of Profile 3 at 4th December, 15:30 UTC (18?08.21?S / 09?56.25?E) one OBS and one OBMT were deployed, and a joint CTD and releaser test was taken to 4000 m water depth. In the following 111 further OBS/OBH deployments were successfully achieved. All stations were recovered with no down time and loss of material. The end of the last profile (Profile 4) was reached at 27th December 14:53 UTC at 20?42,10?S / 12?18,05?E. Streamer and airguns were recovered and stowed, and transit for Walvis Bay started. Walvis Bay was reached at about 06:30 UTC on 29th December 2010, marking the end of Expedition MSM 17/1. Data were collected in quadrants 370, 371, 406 and 407 (see map below)
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| IFMGEO | Behrmann Jan | 1 | km | G90 Other geological or geophysical measurements |
Multibeam EM 120 | yes |
| IFMGEO | Behrmann Jan | 1 | km | G90 Other geological or geophysical measurements |
Parasound | yes |
| IFMGEO | Behrmann Jan | 1 | n miles | H80 Other physical measurements |
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on | yes |
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 |
|---|---|---|---|---|---|---|
| IFMGEO | Behrmann Jan | D06 | deploy ARGO Float | 16° 20.0' S | 8° 7.0' E | - |
| IFMGEO | Behrmann Jan | D06 | deploy ARGO Float | 12° 60.0' S | 4° 11.0' E | - |
| IFMGEO | Behrmann Jan | D06 | deploy ARGO Float | 8° 60.0' S | 0° 10.9' E | - |
| IFMGEO | Behrmann Jan | D08 | Begin recovery of 39 OBH/OBS, heading ESE | 17° 59.4' S | 9° 19.1' E | - |
| IFMGEO | Behrmann Jan | D08 | End of OBS/OBH and OBMT deployment | 22° 19.3' S | 12° 1.6' E | - |
| IFMGEO | Behrmann Jan | D08 | End of OBS/OBH and OBMT deployment | 20° 34.5' S | 11° 8.4' E | - |
| IFMGEO | Behrmann Jan | D08 | End of OBS/OBH deployment | 18° 32.2' S | 11° 46.1' E | - |
| IFMGEO | Behrmann Jan | D08 | Start of Profile 2, 39 OBS/OBH, deployment heading ESE | 17° 59.4' S | 9° 19.1' E | - |
| IFMGEO | Behrmann Jan | D08 | Start of Profile 3 Northern Sector, 39 OBS/OBH, 15 OBMT, deploym. heading 155? | 18° 8.2' S | 9° 56.2' E | - |
| IFMGEO | Behrmann Jan | D08 | Start of Profile 3 Southern Sector, 34 OBS/OBH, 9 OBMT, deploym. heading 155? | 20° 10.5' S | 10° 56.4' E | - |
| IFMGEO | Behrmann Jan | D08 | Terminate airgun shots, begin recovery of 34 OBS/OBH, heading 155? | 17° 45.5' S | 9° 45.2' E | - |
| IFMGEO | Behrmann Jan | G90 | Start Airgun shots on Profile 3 Northern Sector, heading 335?, 4 kts, 1 shot/minute (seismic) | 20° 57.1' S | 11° 19.7' E | - |
| IFMGEO | Behrmann Jan | G90 | Start Airgun shots on Profile 3 Southern Sector, heading 335?, 5 kts, 1 shot/minute (seismic) | 22° 41.6' S | 12° 13.2' E | - |
| IFMGEO | Behrmann Jan | G90 | Start Airgun shots, Profile 2, heading WNW, 4 kts, 1 shot/minute (seismic) | 18° 35.4' S | 12° 0.4' E | - |
| IFMGEO | Behrmann Jan | G90 | Start Airgun shots, Profile 4, heading 155?, 4 kts, 1 shot/minute, recording onshore (seismic) | 17° 35.9' S | 10° 41.9' E | - |
| IFMGEO | Behrmann Jan | G90 | Start Airgun shots, Profile 5, heading 335?, 5 kts, 1 shot/minute, recording onshore (seismic) | 20° 54.3' S | 11° 48.1' E | - |
| IFMGEO | Behrmann Jan | G90 | Start Airgun shots, Profile 6, reflection seismics only, 4 kts 1 shot/20seconds (seismic) | 19° 30.0' S | 10° 9.2' E | - |
| IFMGEO | Behrmann Jan | G90 | Terminat Airgun shots | 20° 42.1' S | 12° 18.0' E | - |
| IFMGEO | Behrmann Jan | G90 | Terminate airgun shots | 18° 51.2' S | 9° 52.3' E | - |
| IFMGEO | Behrmann Jan | G90 | Terminate airgun shots | 17° 59.4' S | 9° 19.1' E | - |
| IFMGEO | Behrmann Jan | G90 | Terminate airgun shots | 17° 48.2' S | 10° 18.1' E | - |
| IFMGEO | Behrmann Jan | G90 | Terminate airgun shots, begin recovery of 34 OBS/OBH, heading 155? | 17° 45.5' S | 9° 45.2' E | - |
| IFMGEO | Behrmann Jan | G90 | Terminate airgun shots, begin recovery of 39 OBS/OBH, heading 155? | 19° 44.3' S | 10° 44.5' E | - |
| IFMGEO | Behrmann Jan | H10 | CTD and releaser test to 4000 m water depth | 18° 8.2' S | 9° 56.2' E | - |