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  Processed seismic data of Cruise BGR95 1995

The cruise BGR95 from 19th November to 28th December 1995 with M.S. AKADEMIK NEMCHINOV was designed to acquire new marine geophysical data for a better understanding of the geological processes and structural variations of the Cretaceous-aged oceanic crust of the Angola Basin in the South Atlantic regarding its reflectivity pattern, its shape of the basement surfaces and its crustal thickness. These evaluations were extended onshore to the ‘Damara Igneous Province’. The aim of this study was the investigation of the rift-related volcanic-magmatic processes accompanying the initial stage of the opening of the South Atlantic Ocean. The survey was a co-operation of BGR, Alfred Wegener Institute for Polar and Marine Research (AWI), GeoForschungsZentrum Potsdam, University of Göttingen and Johann Wolfgang Goethe-University Frankfurt/Main. The M.S. AKADEMIK NEMCHINOV generated the seismic signals by a tuned airgun array of 3260 cu.in. (= 53.4 l) together with two AWI owned large volume guns of 2 x 2000 cu.in. (= 65.6 l), recorded the MCS signals with a 3000 m streamer and controlled the shot releases for the ocean bottom hydrophones (OBH’s) and the onshore seismic stations (PEDAS). A total of 5,114 km of multichannel seismic reflection data in parallel with magnetic and gravity measurements have been collected onboard the M.S. AKADEMIK NEMCHINOV. 1069.4 km of the seismic work was done on 3 combined refraction/wide angle offshore and onshore traverses. The offshore part was recorded by 7 ocean bottom hydrophones (OBH) operated by the M.V. POLAR QUEEN (Reichert et al., 1996). The registration onshore Namibia was performed by 25 mobile seismic landstations (PEDAS) on each profile (Schulze et al., 1996). First results are described in the offshore and onshore reports of these investigations (Reichert et al., 1996, and Schulze et al., 1996). The data clearly show distinct series of the seaward dipping reflector sequences (SRDS) and isochronous variations in the accretion of the oceanic crust. The onshore and offshore registrations show deep arrivals from diving and refracted waves in a range up to 200 to 400 km.
 
Citation proposal
. Processed seismic data of Cruise BGR95 1995. https://gdk.gdi-de.org/geonetwork/srv/api/records/1f9e063a-70ad-484b-bfe0-80b53a4ba134
 

Simple

Alternate title
BGR95 1995
Date ( Creation )
1995-12-28
Identifier
eaff0506-3712-4992-9737-bcf3923ab4ea
Status
completed Completed

  Point of contact

Federal Institute for Geosciences and Natural Resources  
Stilleweg 2 Hannover 30655

GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Geologie
  • geology
GEMET - Concepts, version 2.4 ( Theme )
  • geophysics
  • Geophysik
  • raw material
  • Rohstoff
Keywords ( Theme )
  • Marine geology
  • Meeresgeologie
  • Seismics
  • Seismik
  • Two-dimensional seismic reflection
  • zweidimensionale Reflektionsseismik
Keywords ( Place )
  • Southeast Atlantic Ocean
  • Südost-Atlantik
  • Angola Basin
  • Angola Becken
  • Namibia
Access constraints
Other restrictions
Use constraints
Other restrictions
Other constraints
Allgemeine Geschäftsbedingungen, siehe http://www.bgr.bund.de/AGB - General terms and conditions, see http://www.bgr.bund.de/AGB_en. Die bereitgestellten Informationen sind bei Weiterverwendung wie folgt zu zitieren: Datenquelle: BGR95 1995, (c) BGR, Hannover, 1995
Spatial representation type
Vector
Metadata language
English
Character set
UTF8
Topic category
  • Geoscientific information
N
S
E
W


Distribution format
  • Shapefile (n/a )

Transfer size
2
OnLine resource
BGR95 1995 (Shapefile)  

BGR95 1995 im Format ESRI Shape

OnLine resource
Profile BGR95-02  

Profile BGR95-02

OnLine resource
Profile BGR95-02A  

Profile BGR95-02A

OnLine resource
Profile BGR95-05  

Profile BGR95-05

OnLine resource
Profile BGR95-07  

Profile BGR95-07

OnLine resource
Profile BGR95-08  

Profile BGR95-08

OnLine resource
Profile BGR95-10  

Profile BGR95-10

OnLine resource
Profile BGR95-11  

Profile BGR95-11

OnLine resource
Karte im BGR-Geoviewer  

Karte im BGR-Geoviewer

Hierarchy level
Dataset

Conformance result

Date ( Publication )
2010-12-08
Explanation
siehe dazu die angegebene Durchführungsbestimmung
Statement
During the period from 19th November to 28th December 1995 BGR acquired seismic lines off Namibia. The lines BGR95-01, BGR95-03, BGR95-04, BGR95-06, BGR95-09 and BGR95-12 are raw data. The lines BGR95-02, BGR95-02A, BGR95-05, BGR95-07, BGR95-08, BGR95-10, BGR95-11 are processed (migrated) data.

gmd:MD_Metadata

File identifier
1f9e063a-70ad-484b-bfe0-80b53a4ba134   XML
Metadata language
English
Character set
UTF8
Parent identifier
06a73c56-06a2-40d8-b806-466222b0760d
Hierarchy level
Dataset
Hierarchy level name
Geophysik
Date stamp
2023-11-16
Metadata standard name
INSPIRE Metadata Implementing Rules: Technical Guidelines based on EN ISO 19115 and EN ISO 19119
Metadata standard version
n/a

  Point of contact

Bundesanstalt für Geowissenschaften und Rohstoffe (BGR)  

Website
https://produktcenter.bgr.de  
 
 

  Overviews

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1f9e063a-70ad-484b-bfe0-80b53a4ba134   Access to the portal Read here the full details and access to the data.

  Associated resources

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