2010. National Geophysical Data Center. This shapefile shows isoclinic lines (lines of constant inclination of the Earth's magnetic field), derived from the International Geomagnetic Refe... National Atlas of the United States.
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2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation) in the horizontal component of the total field intensity of the Earth's ... National Atlas of the United States.
2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation) in the vertical component of the total field intensity of the Earth's ma... National Atlas of the United States.
2010. National Geophysical Data Center. This shapefile shows lines of equal annual change (secular variation) in the inclination of the Earth's magnetic field, derived from the Internatio... National Atlas of the United States.
2010. National Geophysical Data Center. This line shapefile shows lines of equal vertical intensity of the Earth's magnetic field, derived from the International Geomagnetic Reference Fie... National Atlas of the United States.
2010. National Geophysical Data Center. This shapefile contains isodynamic lines (lines of equal total intensity of the Earth's magnetic field), derived from the International Geomagnetic... National Atlas of the United States.
2010. National Geophysical Data Center. This map layer shows isogonic lines (lines of constant declination of the Earth's magnetic field), derived from the International Geomagnetic Refer... National Atlas of the United States.
2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation), in the total field intensity of the Earth's magnetic field, derived fro... National Atlas of the United States.
19. International Bathymetric Chart of the Arctic Ocean, 30 Arc-Second Resolution GeoTIFF (Version 3.0)
1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, and 2011. IOC (Intergovernmental Oceanographic Commission), Jakobsson, M, Mayer, Larry A. (Larry Allan), 1952-, Coakley, Bernard, Dowdeswel, Julian A., Forbes, Steve, Fridman, Boris, 1956-, Hodnesdal, Hanne, Noormets, Riko, Pedersen, Richard J., 1952-, Rebesco, M. (Michele), Schenke, Hans Werner, Zarayskaya, Yulia, Daniela Accettella, Armstrong, Andrew, Anderson, Robert M., Bienhoff, Paul, Camerlenghi, A. (Angelo), Church, Ian, Edwards, Margo, Gardner, James V., Hall, John Kendrick, 1940-, Hell, Benjamin, Hestvik, Ole, Kristoffersen, Y., Marcussen, Christian, Mohammad, Rezwan, Mosher, David Cole, 1960-, Nghiem, Son V., Pedrosa, Maria Teresa, Travaglini, Paola G., and Weatherall, Pauline. This layer is a georeferenced raster image (GeoTIFF) of a digital bathymetric model (DBM) of the Arctic Ocean compiled with all multibeam, dense si... National Geophysical Data Center.
1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, and 2014. Environmental Systems Research Institute (Redlands, Calif.) and Geological Survey (U.S.). This point shapefile contains the proper names and locations of buldings in the United States and its Territories using the Federal standard for ge... Environmental Systems Research Institute (Redlands, Calif.).