World Data Service for Geophysics

Marine Seismic Reflection

Geophysical surveying provides a relatively rapid and cost-effective means of deriving regionally distributed information on subsurface geology. The unique properties of seismic reflection allow the direct application of geologic concepts based on physical stratigraphy. NCEI maintains a large volume of both analog and digital seismic reflection data.

Currently only some lines are available online. Digital data include SEGY files and scanned images of the full-scale section as well as shot point navigation. Additional digital seismic reflection data are available on request and can be searched for (along with other underway geophysical data) using the geophysical survey data viewer link at left.

A search for seismic reflection data using the Marine Trackline Geophysics database will determine what data exist in a region. Digital data, and scanned images of former analog data, submitted with digital navigation are directly downloadable from searches.

For assistance, or to obtain data not available for download, please contact .

Historic Seismic Data Sets:

Some historic seismic reflection data sets were sent to NGDC (now NCEI) either as compilations of multiple surveys, or without digital navigation. Those data are not readily discoverable via searches.

A list of historic seismic reflection data sets is provided below with links to more detailed information.

Please note that data from many of the data sets on this list may also be discoverable/downloadable via the geophysical survey viewer.