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  Processed seismic data of Cruise BGR 1977

A geophysical reconnaissance survey was carried out in the Labrador Sea and Davis Strait between July and September 1977 by BGR. The data format is Society of Exploration Geophysicists SEG Y. The survey was executed on the research vessel MS Explora. The seismic, magnetic and gravity data from 5931 line-kilometers on 21 lines were recorded on magnetic tape. A 24-fold coverage technique was used with 48 seismic channels (traces), with a 2400m streamer cable, and 23.45 l airgun array. A full integrated computerized satellite navigation system (INDAS III) served as positioning system. Based on a preliminary interpretation of the seismograms, the Labrador Sea was devided into an eastern (Greenland) and western (Canadian) area, seperated by the Mid Labrador Ridge. Within the eastern part of the Labrador Sea the Pre-Cenozoic sediments show three distinct layers, traceable over the entire Greenland area of the sea. In the Cenozoic layer olisthostromes occur. The highest apparent velocity determined from sonobuoy data was 9.26 km/sec. The calculated refractor lies at a depth of approximately 13 km. The seismic section from the sediments on the Canadian side of the Labrador Sea show a uniform series of thick sediments below the Cenozoic cover. The highly disturbed basement is often masked by the multiple reflections from the seafloor. Statements about the nature and structure of the basement can only be made after processing data.
 
Citation proposal
. Processed seismic data of Cruise BGR 1977. https://gdk.gdi-de.org/geonetwork/srv/api/records/5feebc6e-6030-410b-8aa8-aac6ee311e52
 

Simple

Alternate title
BGR77 1977
Date ( Creation )
1977-09-08
Identifier
66989e10-f8de-44bc-93cb-4871dc1e2ba4
Status
completed Completed

  Point of contact

Federal Institute for Geosciences and Natural Resources  
Stilleweg 2 Hannover 30655

GEMET - INSPIRE themes, version 1.0 ( Theme )
  • geology
  • Geologie
GEMET - Concepts, version 2.4 ( Theme )
  • geophysics
  • Geophysik
  • raw material
  • Rohstoff
  • marine geology
  • Meeresgeologie
Keywords ( Theme )
  • seismics
  • Seismik
  • two-dimensional seismic reflection
  • zweidimensionale Reflektionsseismik
  • MSSP
Keywords ( Place )
  • Labrador Sea
  • Labrador See
Access constraints
Other restrictions
Use constraints
Other restrictions
Other constraints
Allgemeine Geschäftsbedingungen, siehe https://www.bgr.bund.de/AGB - General terms and conditions, see https://www.bgr.bund.de/AGB_en. Die bereitgestellten Informationen sind bei Weiterverwendung wie folgt zu zitieren: Datenquelle: BGR77, (c) BGR, Hannover, 1977
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
1
OnLine resource
BGR77 1977 (Shapefile)  

BGR77 1977 im Format ESRI Shape

OnLine resource
Profil BGR77-01  

Profil BGR77-01

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Profil BGR77-02  

Profil BGR77-02

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Profil BGR77-03a  

Profil BGR77-03a

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Profil BGR77-04  

Profil BGR77-04

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Profil BGR77-05  

Profil BGR77-05

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Profil BGR77-06  

Profil BGR77-06

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Profil BGR77-07  

Profil BGR77-07

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Profil BGR77-08  

Profil BGR77-08

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Profil BGR77-09  

Profil BGR77-09

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Profil BGR77-10  

Profil BGR77-10

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Profil BGR77-11  

Profil BGR77-11

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Profil BGR77-12  

Profil BGR77-12

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Profil BGR77-13  

Profil BGR77-13

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Profil BGR77-14  

Profil BGR77-14

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Profil BGR77-15  

Profil BGR77-15

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Profil BGR77-16  

Profil BGR77-16

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Profil BGR77-17  

Profil BGR77-17

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Profil BGR77-17a  

Profil BGR77-17a

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Profil BGR77-18  

Profil BGR77-18

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Profil BGR77-19  

Profil BGR77-19

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Profil BGR77-19a  

Profil BGR77-19a

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Profil BGR77-20  

Profil BGR77-20

OnLine resource
Profil BGR77-21  

Profil BGR77-21

OnLine resource
Profil BGR77-21a  

Profil BGR77-21a

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 between 18th of July to 8th of September 1977 BGR aquired seismic lines in the Labrador Sea and the Davis Strait. The lines BGR77-01, BGR77-02, BGR77-04, BGR77-05, BGR77-06, BGR77-07, BGR77-08, BGR77-09, BGR77-10, BGR77-12, BGR77-17, BGR77-17A, BGR77-18, BGR77-19, BGR77-19A, BGR77-20, BGR77-21A are processed (migrated) data. The lines BGR77-03A, BGR77-11, BGR77-14, BGR77-15, BGR77-16 and BGR77-21 are raw data.

gmd:MD_Metadata

File identifier
5feebc6e-6030-410b-8aa8-aac6ee311e52   XML
Metadata language
English
Character set
UTF8
Parent identifier
06a73c56-06a2-40d8-b806-466222b0760d
Hierarchy level
Dataset
Hierarchy level name
Geophysik
Date stamp
2025-04-07
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  
 
 

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5feebc6e-6030-410b-8aa8-aac6ee311e52   Access to the portal Read here the full details and access to the data.

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