My account

×

News

More news...

Project Blake Ridge Hydrates 3D

General

Country:

USA

Location:

Offshore, South Carolina

Blocks:

164

Coordinates:

N 31° 49' 03” / W 74° 43' 18”

Acquisition:

2000

(Re)processing:

2000

Value added Products:

2015

Data summary:

OpendTect project with 3D Seismic Data and PSTM.

Size:

1.94 GB (uncompressed), 914 MB (download)

License:

Creative Commons 3.0

Download:

download

Contributors

Original seismic:

Dr. W. Steven Holbrook, University of Wyoming, PI of the NSF project that acquired these data.

Value added products:

dGB Earth Sciences created the OpendTect project and computed the dip-steering volumes.

Acknowledgment

Using the data and value-added products in this project in publications is permitted. We kindly request to be acknowledged in the following manner:

We thank dGB Earth Sciences for making the data available as an OpendTect project via their TerraNubis portal terranubis.com.

Survey Parameters

Survey type:

Only 3D

Inline range and step:

1, 95, 1

Crossline range and step:

1, 1306, 1

Z range and step:

3.4, 5.998, 0.002 Time

Inline bin size (m/line):

75

Crossline bin size (m/line):

37.5

Area (sq km):

348.93

More Info

NOTE: Derived Attributes are released under the Creative Commons license but original seismic data is released under:

NFS award 99190966

Geological Features

The Blake Ridge is one of the best-studied methane hydrate systems on Earth. Here a fine-grained sediment drift deposit hosts a significant quantity of methane hydrate and methane gas. In this data volume, a clear bottom-simulating reflection (BSR) marks the hydrate/gas phase boundary, and numerous bright spots beneath the BSR indicate a thick, complex free gas zone. In addition, this volume displays the interactions between the hydrate/gas system and the compaction normal faulting and sediment waves that characterize the sediments.

Equipment

This data was acquired using a single, 4-km-long streamer, with streamer feathering used to fill in the 3D bins. The source was a small array of two 105/105 cu. in. GI guns.

References

  • Hornbach, M. J., D. M. Saffer, W. S. Holbrook, H. J. A. Van Avendonk, and A. R. Gorman (2008), Three-dimensional seismic imaging of the Blake Ridge methane hydrate province: Evidence for large, concentrated zones of gas hydrate and morphologically driven advection, J. Geophys. Res.-Solid Earth, 113(B7), 15.
  • Hornbach, M. J., D. M. Saffer, and W. S. Holbrook (2004), Critically pressured free-gas reservoirs below gas-hydrate provinces, Nature, 427(6970), 142-144.
  • Gorman, A. R., W. S. Holbrook, M. J. Hornbach, K. L. Hackwith, D. Lizarralde, and I. A. Pecher (2002), Migration of methane gas through the hydrate stability zone in a low-flux hydrate province, Geology, 30, 327-330.
  • Holbrook, W. S., A. R. Gorman, M. J. Hornbach, K. L. Hackwith, J. W. Nealon, D. Lizarralde, and I. A. Pecher (2002), Seismic detection of marine methane hydrate, The Leading Edge, 21, 686 689.
  • Holbrook, W. S., D. Lizarralde, I. A. Pecher, A. R. Gorman, K. L. Hackwith, M. Hornbach, and D. Saffer (2002), Escape of methane gas through sediment waves in a large methane hydrate province, Geology, 30, 467 470.
  • Hornbach, M. J., W. S. Holbrook, A. R. Gorman, K. L. Hackwith, D. Lizarralde, and I. A. Pecher (2003), Direct seismic detection of methane hydrate on the Blake Ridge, Geophysics, 68, 92 100.

    • Available Data

    Seismic:

    • PSTM stack
    • Detailed Steering Cube
    • Background Steering Cube

    Map
    ×

    Download Blake Ridge Hydrates 3D

    Download

      ×

      Derivative work

      An important aspect of TerraNubis is the possibility to create derivative work. For example, someone performed a seismic interpretation and makes this interpretation including all data files and interpreted grids available as a project for sale in TerraNubis. The seller permits 3rd parties to create derivative work for this project. This is a free choice for every project on sale. It means that any expert can work on this data set to create additional value-added products without paying the seller. It is explicitly forbidden to use the data for anything else then creating derivative work. The derivative work has to be sold exclusively via TerraNubis and always in combination with the original project.

      Download derivative work agreement

      Cookies are important to the proper functioning of this site. Please click on "Yes" to activate cookies. If you do not want to have cookies activated, you can opt out by clicking "No".

      More on cookies >>

      Yes
      No

      Please use an up to date version of Chrome, Firefox, Edge (on Windows) or Safari (on Mac)

      Ok