Deutsches Ozeanographisches
Datenzentrum Inventur der Meteor-Reise M62-4 (DOD-Ref-No.20040202)
Inventory of Meteor Cruise M62-4 (DOD-Ref-No.20040202)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Meteor M62-4 30.09.2004 - 04.11.2004 ASTERICS
 
SE Atlantic (Limit 20?W)  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Reston Timothy Leibniz-Institut fur Meereswissenschaften an der Universitat Kiel Mindelo Recife   

Ziel der Reise / Objectives of Cruise:

Geophysical investigation of spreading segment processes The cruise set out to investigate processes of ridge segmentaiton at the Mid-Atlantic Ridge between 5 and 12 degrees south. The first study area was at about 5 S, where magnetic (M) and gravity profiles were used to investigate the spreading history and crustal structure. Then a long wide-angle seismic profile was collected using ocean bottom seismometers (OBS) to determine crustal structure between the North and South Ascension Fracture Zones. A small 3D grid over the active spreading center between these fracture zones was also collected; the instruments also recorded seismic activity. Further work concentrated on the segments to the south. A 3D wide-angle grid and a deep tow survey (DTS) were collected over segment A-BV3 where an axial high is present. Two parallel N-S profiles were collected parallel to the spreading axis of segment A-BV1 where an axial valley exists. These instruments also recorded seismic activity. Gravity (GRAV) and swath-bathymetry (SB) were collected along all profiles.

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 Reston Timothy 78 stations G26
Seismic refraction (no.of nautical miles)
Ocean bottom seismometer profiles no
IFMGEO Reston Timothy 1700 n miles G27
Gravity measurements
Gravity profiles no
IFMGEO Reston Timothy 670 n miles G28
Magnetic measurements
Magnetometer profiles no
IFMGEO Reston Timothy 1700 n miles G74
Multi-beam echosounding
Swath-bathymetry profiles no
IFMGEO Reston Timothy 340 n miles G75
Single channel seismic reflection
Seismic reflection profiles with a short 4 channel hydrophone streamer no
IFMGEO Reston Timothy 102 n miles G76
Multichannel seismic reflection
Deep-tow seismic reflection profiles no
IFMGEO Reston Timothy 1 stations H10
CTD-Stations
CTD cast no
23.3.2024