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  Processed seismic data of Cruise SO81 PAKOMAR2 1992

The structure and tectonics of the Pacific margin of Costa Rica were studied by multichannel seismic measurements in parallel with gravity measurements and swathmapping from the Cocos Ridge to Nicoya Peninsula during R/V SONNE cruise SO81 legs 1 and 2 from 18th August to 15th September 1992. In addition geological sampling has been carried out. Dominant structural feature is the buried Costa Rica Terrrane (CRT), a complex and segmented, wedge-shaped unit characterized by relative high seismic velocities of 4 km/s. The thickness of this several tens of kilometres wide zone varies between 0.5 and 3 s (twt). The CRT forms the backstop against which the sediments of the subducting Cocos plate accrete resulting in accumulation of sedimentary mass beneath and in front of the CRT, as well as in simultaneous uplift and fracturing of the CRT. It appears that the distinct CRT is affected locally by raft tectonics, i.e. a form of thin-skinned extension by normal faulting from gravity sliding over a non-stretched oceanic crust. A unit is recognizable between the base of the CRT and the surface of the subducting oceanic crust on most of the seismic lines. This unit is thought to consist mostly of ductile pelagic to hemipelagic shales. Some segment boundaries of the CRT are associated with morphological furrows, 5 to 10 km wide and up to 30 km long running across the slope. We feel that the data acquired during SONNE cruise SO81, and the preliminary results at hand have already improved our knowledge on the geological processes of active continental margins. We are convinced that plausible concepts for the origin of tsunamis and asperities can be developed on the basis of the data collected during SONNE cruises SO81 and SO76. The research of both SONNE cruises are a contribution to the International Decade of Natural Desaster Reduction (IPNDR).
 
Citation proposal
. Processed seismic data of Cruise SO81 PAKOMAR2 1992. https://gdk.gdi-de.org/geonetwork/srv/api/records/96e63f4f-ba23-4539-9236-05c39258a88b
 

Simple

Alternate title
SO81 PAKOMAR2 1992
Date ( Creation )
1992-09-15
Identifier
1d294f44-e91b-6e7a-2509-daaa10db4918
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 )
  • Northeast Pacific Ocean
  • Nordost-Pazifik
  • Costa Rica
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: SO81 PAKOMAR2 1992, (c) BGR, Hannover, 2018
Spatial representation type
Vector
Metadata language
English
Character set
UTF8
Topic category
  • Geoscientific information
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S
E
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Distribution format
  • Shapefile (n/a )

Transfer size
1
OnLine resource
SO81 PAKOMAR2 1992 (Shapefile)  

SO81 PAKOMAR2 1992 im Format ESRI Shape

OnLine resource
Profile SO81-01  

Profile SO81-01

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Profile SO81-02  

Profile SO81-02

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Profile SO81-03  

Profile SO81-03

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Profile SO81-04  

Profile SO81-04

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Profile SO81-05  

Profile SO81-05

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Profile SO81-06  

Profile SO81-06

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Profile SO81-07  

Profile SO81-07

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Profile SO81-07A  

Profile SO81-07A

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Profile SO81-08  

Profile SO81-08

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Profile SO81-09  

Profile SO81-09

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Profile SO81-10  

Profile SO81-10

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Profile SO81-11  

Profile SO81-11

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Profile SO81-13  

Profile SO81-13

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Profile SO81-14  

Profile SO81-14

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Profile SO81-15  

Profile SO81-15

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Profile SO81-16  

Profile SO81-16

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Profile SO81-17  

Profile SO81-17

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Profile SO81-17A  

Profile SO81-17A

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Profile SO81-18  

Profile SO81-18

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Profile SO81-21  

Profile SO81-21

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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 18th August to 15th September 1992 BGR acquired seismic lines off the Pacific coast of Costa Rica. Lines SO81-01A, SO81-12, SO81-12A, SO81-19A, SO81-20 and SO81-21A consist of raw data. Lines SO81-01, SO81-02, SO81-03, SO81-04, SO81-05, SO81-06, SO81-07, SO81-07A, SO81-08, SO81-09, SO81-10, SO81-11, SO81-13, SO81-14, SO81-15, SO81-16, SO81-17, SO81-17A, SO81-18 and SO81-21 consist of stacked data.

gmd:MD_Metadata

File identifier
96e63f4f-ba23-4539-9236-05c39258a88b   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  
 
 

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96e63f4f-ba23-4539-9236-05c39258a88b   Access to the portal Read here the full details and access to the data.

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