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About ODSN

  1. Introduction
  2. Goals of ODSN
    1. GEOMAR
    2. University of Bremen
  3. ODSN funding
  4. Who works with ODSN
  5. Credits
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Introduction

The Ocean Drilling Stratigraphic Network is intended to facilitate work with the stratigraphic data gathered by the Deep Sea Drilling Project and Ocean Drilling Program by providing access to databases and tools, and communication among researchers.

Stratigraphic data have been collected for three decades by the Deep Sea Drilling Project (DSDP), and the Ocean Drilling Program (ODP). These international activities have provided a wealth of information about environmental conditions in the oceans during the geologic past. The scientific results of the ocean drilling programs have had a major impact on the understanding of the Earth's history and development of its climate system.

The acquisition and archiving of data related to shipboard drilling activities has been the responsibility of the drilling program operator. Much of the data produced on board ship and some shorebased studies carried out in conjunction with the drilling legs has been published in the Initial Reports and Scientific Results volumes of the DSDP and ODP. However, the paper medium is no longer suited to be the exclusive archive for these scientific efforts. Part of the data produced by the DSDP and ODP are available on CDROMs, and additional data reside in the ODP database. However, these electronically accessible data are in a variety of formats and are not readily integrated. Furthermore, much subsequent research has been carried out by individual scientists working with materials collected by the DSDP/ODP with no provision for archiving of the data produced.

To discuss and seek remedies to the problems of using stratigraphic data from the DSDP and ODP, an international workshop about Objectives and Implementation of an Ocean Drilling Stratigraphic Network (ODSN) was held in Bremen, Germany December 18-20, 1995. It was organized by a group of North German institutions especially concerned with marine geology and geophysics (Fachbereich Geowissenschaften, Universität Bremen; GEOMAR Forschungszentrum für marine Geowissenschaften, Kiel; Geologisch-Paläontologisches Institut, Universität Kiel; Alfred-Wegener Institut für Polar- und Meeresforschung, Bremerhaven), and was sponsored by the Deutsche Forschungsgemeinschaft and the Senator für Wirtschaft of Land Bremen. The workshop outlined an international initiative to improve the quality and usage of stratigraphic data generated by the Deep Sea Drilling Project/Ocean Drilling Program and related research programs. Experts representing many fields of Geoscience were invited to present their perceptions of problems in the use of the vast amounts of information that have been collected, discuss potential solutions, and relate their experiences in synthesizing data.

The workshop concluded that the ODSN should provide a distributed database system and communication network for data exchange and scientific cooperation. It should promote the organization of stratigraphic information for drill sites, regions, and geologic time intervals. It should become a resource for scientific investigations, providing improved age models, better stratigraphic correlation between drill sites, regions and ocean basins. It should maintain homogenous stratigraphic data sets that can serve to further scientific programmes.

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2. Goals of ODSN

Two institutions are currently actively pursuing projects supporting the ODSN: the GEOMAR Research Center for Marine Geoscience, and the Geological Sciences Department of Bremen University. Other institutions conducting research projects on the stratigraphic data of DSDP and ODP are invited to make data and tools available online and join the ODSN.

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2.a. GEOMAR

Four projects using global aspects of the data are currently underway:

  1. Revised and updated age-depth profiles for the DSDP and ODP sites using paleontology and magnetics corrected to the Berggren 1996 time scale. This is needed as a basis for projects B and D cited below.
  2. Determination of sedimentation rates in smectite-rich marine sediments.
  3. Revised astronomical age-depth profiles for sites 552, 586, 607, 610, 658, 659, 663, 665, 677, 704, 805, 806, 844-852, 882, 925-929 to permit detailed correlation of proxy data.
  4. Reconstruction of the position of the polar fronts to be used as tests of numerical ocean circulation models.
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2.b. University of Bremen

Four projects concentrating on the South Atlantic, particularly the Benguela Cuurent system, are presently underway:

  1. Correlation of stratigraphic data for DSDP Sites 71 through 75 with the astronomically calibrated stratigraphy from Leg 154.
  2. Calibration of magentic stratigraphies of Legs 108, 113 and 114.
  3. Astronomical calibration of variations in sedimentary properties for DSDP ite 532, Walvis Ridge.
  4. Reconstruction of paleoceanographic conditions in the Neogene Atlantic be comparison of results from DSDP Legs in the southeast Atlantic (71-75), Ceara Rise (ODP Leg 154) and the southwest African continental margin (ODP Leg 175).

For more information on these projects, please visit the ODSN-Bremen website.

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3. ODSN funding

The projects currently underway are supported by the Deutsche Forschungsgemeinschaft (German Science Foundation).

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4. Who works with ODSN

The data available at ODSN sites are available for use without restriction. Individual stratigraphers and paleontologists are invited join the contact list and to contribute data to this public facility. Institutions with unrestricted databases are invited to join ODSN.

People currently working on ODSN are (in alphabetical order):
Warner Brueckmann (Kiel) - organization and proposals
Martin Cepek (Bremen) - paleontology and data
William W. Hay (Kiel) - paleontology, organization and proposals
Thorsten Matschkowski (Bremen) - web and data
Emanuel Soeding (Kiel) - programming, web and data
Volkhard Spiess (Bremen) - organization and proposals
Joern Thiede (Kiel) - organization and proposals
Ralph Tiedemann (Kiel) - proposals
Gerold Wefer (Bremen) - organization and proposals

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5. Credits

There are lots of people we owe beers to, because of the help and support they provided in making this. We mention them in the no particular order:

Martin Weinelt, for his help with the interactive mapping system.

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Questions or Comments? Please send mail to the ODSN-Webmaster Thank you!
Page last modified: Sunday, 29-May-2011 21:43:12 CEST