|
| Sonne |
157 |
15.06.2001 - 14.07.2001 |
|
SE Pacific (Limit 140W) South Pacific Ocean |
| Stoffers Peter |
INSGEK |
Valparaiso |
Hanga Roa (Easter Island) |
| |
Bathymetrie Daten / Bathymetric data
Ziel der Reise / Objectives of Cruise:
Cruise So 157 visited the pracific-antaretic ridge (PAR) adjecent to its intersection with the foundation seamount chain from 36.5 - 48.5 %. The cruise followed earlier visits to the foundation seamounts of the SF Sonne (1995) and the no Látacante (1997), which had discovered silca-rich lavas and indications of widespread hydrotermal activity along this part of the PAR crest and responds the present day position of the foundation plume as ~35 km west of the PAR crest near 37° 25' S.
Motor objectivies of the So 157 cruise were to establish the nature of plumeridge interactions, to define the extent and genesis of the silica-rich lavas opting out along the ridge crest and to investigate the relationsship between the silico-rich and widespread activity.
66 stations were completed, comparising to dredge stations 10 TV-grab stations, and 6 OFOS (nidro-(slkd) stations. Messungen / Measurements
| INSGEK |
Stoffers Peter |
50 |
stations |
G01
Dredge |
Sea floor dredging cavas for geochemical analysis |
no |
| TUBAFM |
Herzig Peter |
10 |
stations |
G02
Grab |
TV-controlled grab sampling to obtain samples fo hydrothermal minerals, cavas, and biology for later annalysis. |
no |
| TUBAFM |
Herzig Peter |
6 |
stations |
G08
Bottom photography |
Sea floor mapping using a towed video sledge. |
no |
| INSGEK |
Stoffers Peter |
2100 |
km |
G74
Multi-beam echosounding |
Multi-beam bathymetry of ridge crest using a simrad EM/2. |
no |
Formulierung einer Anfrage /
DOD Digital Data Request Form
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