frequently asked questions...

No, all of our data and images are in the public domain, unless specifically marked otherwise - with the notable exception of trademarks, logos, and trade names such as the NOAA emblem and the Department of Commerce seal which are the property of the U.S. Government and are trademarks of the Commerce Department and require permission for use.

All other images, and data, are available for your use. We would appreciate a link/credit/byline, as appropriate. We ask that you please cite the original data contributors and sources of funding when you use data from NGDC. As required by 17 U.S.C. 403, third parties producing copyrighted works consisting predominantly of the material produced by U.S. government agencies must provide notice with such work(s) identifying the U.S. Government material incorporated and stating that such material is not subject to copyright protection.

For more information, please see the NGDC disclaimer and copyright notice.

Download a .PDF version for free, or order printed copies from this page. This new 2004 version of the icosahedron has higher-resolution global relief.

You must be looking for the magnetic declination page - choose the "Compute your declination" link to the left, under the image - if you need some extra help, please send questions to the contact on that page.

The deepest part of the ocean (38,518 feet deep) is found in the Marianas Trench. For an animated image try this link, and for more information try this external link. For all sorts of data on the depth of the oceans and the Great Lakes, and to view images of US coastal gridded bathymetry, try our bathymetry, topography, and global relief page.

We have a page full of links to great sites offering information and activities related to oceanography and geology.

Our sister data center, the National Oceanographic Data Center archives and makes available physical, chemical, and biological oceanographic data including the topics above and more. Here at NGDC, we handle data from the seafloor and below.

For direct access to a wide variety of images of MGG data, try our images page. This page also links to other major pages in the MGG area containing more images. For posters and slide sets available, also see our data products - they are available directly through the NGDC online store.

Here is a direct link to the NOAA National Data Centers Online Store, there is also a link to marine geology and geophysics products within the Online Store on the MGG data announcements page. The information page for each product in marine geology and geophysics also offers a direct link to the Online Store for pricing/ordering. If you need assistance with finding a product or ordering, please contact Robin.R.Warnken@noaa.gov, the MGG customer service representative.

Yes. To ask about custom images, please contact Peter.W.Sloss@noaa.gov. You can also create a custom CD-ROM of geophysical data online, pay for it through the online store, and have it shipped to you. We offer custom images and data products of all kinds; when in doubt, just contact us, if you aren't sure who to contact, email Robin.R.Warnken@noaa.gov.

We maintain a list of links to other Marine Geology and Geophysics sites.

Our street address is: NOAA National Geophysical Data Center, E/GC3, 325 Broadway, Boulder, CO USA 80305. Our phone number is 303-497-6338, fax: 303-497-6513.