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1. Northern Gulf Coast Digital Elevation Model [gov.noaa.ngdc.mgg.dem.731]   PARENT DIF
NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions in the Gulf of Mexico. These integrated bathymetric-topographic ...

2. Coastal Digital Elevation Models (DEMs) [gov.noaa.ngdc.ngdc_dems]   CHILD DIFs
Digital elevation models (DEMs) of U.S. and other coasts that typically integrate ocean bathymetry and land topography. The DEMs support NOAA's mission to understand and predict changes in Earth's ...

3. Deep-Ocean Assessment and Reporting of Tsunamis (DART(R)) [gov.noaa.ngdc.G10068]   CHILD DIFs
As part of the U.S. National Tsunami Hazard Mitigation Program (NTHMP), the Deep Ocean Assessment and Reporting of Tsunamis (DART(R)) Project is an ongoing effort to maintain and improve the capability ...

4. CO-OPS 1-minute Raw Tsunami Water Level Data [gov.noaa.ngdc.G10138]
CO-OPS has been involved with tsunami warning and mitigation since the Coast and Geodetic Survey started the Tsunami Warning System in 1948 to provide warnings to the Hawaiian Islands. After the December ...

5. NCEI Marine Geology Data Archive [gov.noaa.ngdc.Marine_Geology_First]
Marine Geologic data compilations and reports in the NCEI archive are from academic and government sources around the world. Over ten terabytes of analyses, descriptions, and images of sediment and ...

6. NOS Bathymetric Maps [gov.noaa.ngdc.G01341]
This collection of bathymetric contour maps which represent the seafloor topography includes over 400 individual titles and covers US offshore areas including Hawaii and Alaska. Most titles are available ...

7. Natural Hazards Image Database [gov.noaa.ngdc.Hazard_Images_Database_v2_First]
Photographs and other visual media provide valuable pre- and post-event data for natural hazards. Research, mitigation, and forecasting rely on visual data for post-analysis, inundation mapping and ...

8. 1952 Kern County, USA Images [gov.noaa.ngdc.mgg.photos.247]   PARENT DIF
South of Bakersfield. Affected area: 414,000 square kilometers. Damage: $50 million. This was the main shock of the series of earthquakes that struck this area. It was the largest earthquake in the ...

9. 1968 Southeast of Hawaii, USA Images [gov.noaa.ngdc.mgg.photos.32]   PARENT DIF
This major (magnitude 7.9) earthquake caused 77 deaths (tsunami, 46; landslide, 31). It knocked almost all wooden houses off their foundations in the Keiawa, Punaluu, and Ninole areas.

10. 1971 San Fernando, USA Images [gov.noaa.ngdc.mgg.photos.8]   PARENT DIF
The magnitude 6.7 earthquake killed 66 and caused $0.5-1.0 billion property damage.

11. 1985 Mexico City, Mexico Images [gov.noaa.ngdc.mgg.photos.13]   PARENT DIF
The magnitude 8.1 earthquake occurred off the Pacific coast of Mexico. The damage was concentrated in a 25 square km area of Mexico City, 350 km from the epicenter. The underlying geology and geologic ...

12. 1986 Palm Springs, USA Images [gov.noaa.ngdc.mgg.photos.243]   PARENT DIF
The magnitude 6.0 earthquake caused $4.5 million in property damage and injured at least 29 people. Landslides occurred in the area. The shock was felt throughout much of southern California and in ...

13. 1988 Spitak Earthquake Database [gov.noaa.ngdc.mgg.hazards.G01269]
The 1988 Spitak Earthquake database is an extensive collection of geophysical and geological data, maps, charts, images and descriptive text pertaining to the catastrophic earthquake in Armenia. This ...

14. 1991 Pinatubo, Philippines Images [gov.noaa.ngdc.mgg.photos.53]   PARENT DIF
Mount Pinatubo is an andesitic island arc volcano, located on the southwestern part of the island of Luzon in the Philippines. Prior to 1991, it had been dormant for more than 635 years. After months ...

15. 1999 Nantou, Taiwan Images [gov.noaa.ngdc.mgg.photos.50]   PARENT DIF
At least 2,297 people killed, 8,700 injured, 600,000 people left homeless and about 82,000 housing units damaged by the earthquake and larger aftershocks. Damage estimated at 14 billion U.S. dollars. ...

16. 2009 Samoa Islands, Samoa Images [gov.noaa.ngdc.mgg.photos.260]   PARENT DIF
At least 149 people killed in Samoa, 34 killed in American Samoa and 9 killed, 7 injured and 500 displaced on Niuatoputapu, Tonga. Widespread damage to infrastructure occurred at Pago Pago, American ...

17. 30-min x 30-min Terrestrial Mean Free-Air Anomalies [gov.noaa.ngdc.mgg.geophysics.G01415]
The 30-min x 30-min Terrestrial Mean Free-Air Gravity Anomaly and Geoid Undulations Data Base was compiled and developed by the Ohio State University. This data base was received in March 1993. Principal ...

18. Air Force Geophysics Laboratory Magnetometer Network [gov.noaa.ngdc.stp.geomag.G09997]
This file is comprised of the variation one minute values of the geomagnetic components X, Y and Z. These data were calculated by the Air Force Geophysics Laboratory magnetometer network during the ...

19. Archive of Geosample Data and Information from the University of Texas at Austin (UT) Institute of Geophysics [gov.noaa.ngdc.mgg.geology.archived-data_UT-sample-repository]   PARENT DIF
Metadata describing piston cores curated by Institute of Geophysics of the University of Texas at Austin (UT) collected from 1976 to 1978 were coded and contributed by UT to the Index to Marine and ...

20. Bar Harbor, Maine Coastal Digital Elevation Model - gov.noaa.ngdc.mgg.dem.592 [gov.noaa.ngdc.mgg.dem.592]   PARENT DIF
NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to ...

21. Bermuda 3 arc-second Coastal Digital Elevation Model [gov.noaa.ngdc.mgg.dem.5011]   PARENT DIF
The 3 arc-second Bermuda DEM will be used to support NOAA's tsunami forecast system and for tsunami inundation modeling. This DEM encompasses the islands of Bermuda and the adjacent off-shore areas.

22. Cape Hatteras, North Carolina Coastal Digital Elevation Model [gov.noaa.ngdc.mgg.dem.296]   PARENT DIF
NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to ...

23. Cape Mendocino, CA Earthquakes, April 25 & 26, 1992 [gov.noaa.ngdc.mgg.photos.G01209]   PARENT DIF
On April 25, 1992, a magnitude 7.1 earthquake occurred in the Cape Mendocino area. Two additional earthquakes, magnitudes 6.6 and 6.7 occurred the next morning. The first earthquake was located six ...

24. Central California 3 arc-second DEM [gov.noaa.ngdc.mgg.dem.547]   PARENT DIF
The 3-second Central California Elevation Grid provides bathymetric data in ASCII raster format of 3-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling

25. Coastal Digital Elevation Models (DEMs) [gov.noaa.ngdc.ngdc_dems]   CHILD DIFs
Digital elevation models (DEMs) of U.S. and other coasts that typically integrate ocean bathymetry and land topography. The DEMs support NOAA's mission to understand and predict changes in Earth's ...

26. Cold Bay, Alaska 8 arc-second Coastal Digital Elevation Model [gov.noaa.ngdc.mgg.dem.4955]   PARENT DIF
NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's ...

27. Cordova, Alaska Coastal Digital Elevation Model [gov.noaa.ngdc.mgg.dem.256]   PARENT DIF
NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to ...

28. Cordova, Alaska Coastal Digital Elevation Model - gov.noaa.ngdc.mgg.dem.696 [gov.noaa.ngdc.mgg.dem.696]   PARENT DIF
NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to ...

29. Corpus Christi, Texas Coastal Digital Elevation Model [gov.noaa.ngdc.mgg.dem.401]   PARENT DIF
NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to ...

30. DNAG Gravity Data [gov.noaa.ngdc.mgg.geophysics.G01497]
The Decade of North American Geology (DNAG) gravity grid values, spaced at 6 km, were used to produce the Gravity Anomaly Map of North America (1987; scale 1:5,000,000). Considerable caution should ...

31. Deep-Ocean Assessment and Reporting of Tsunamis (DART(R)) [gov.noaa.ngdc.G10068]   CHILD DIFs
As part of the U.S. National Tsunami Hazard Mitigation Program (NTHMP), the Deep Ocean Assessment and Reporting of Tsunamis (DART(R)) Project is an ongoing effort to maintain and improve the capability ...

32. Earthquake Damage - General [gov.noaa.ngdc.mgg.photos.G01194]   PARENT DIF
An earthquake is the motion or trembling of the ground produced by sudden displacement of rock in the Earth's crust. Earthquakes result from crustal strain, volcanism, landslides, and collapse of ...

33. Fire vs Water: Erosional/Depositional Geology, Hawaiian Islands [gov.noaa.ngdc.mgg.photos.G01274]   PARENT DIF
Even a casual, untrained observer will see evidence that opposing forces have formed the Hawaiian Islands. The massive and lofty volcanoes have been scoured, abraded, and lacerated by streams and ...

34. GOES Space Environment Monitor, Energetic Particles [gov.noaa.ngdc.sem.goes_eps_g00037]
Solid state detectors with pulse height discrimination measure proton, alpha-particle, and electron fluxes. E1 and I1 channels are responding primarily to trapped outer-zone particles. The I2 channel ...

35. Gravity Anomalies and Estimated Topography Derived from Satellite Altimetry [gov.noaa.ngdc.mgg.geophysics.G00978]
In many areas of the global ocean, the depth of the seafloor is not well known because survey lines by ships are hundreds of kilometers apart. Satellites carrying radar altimeters have measured the ...

36. Gravity Data For The Maryland/Virginia Area [gov.noaa.ngdc.mgg.geophysics.G01475]
The gravity station data (5,905 records) were compiled by the U. S. Geological Survey. This data base was received on July 11, 1997. Principal gravity parameters include observed gravity, Free-air ...

37. Gravity Data for Egypt [gov.noaa.ngdc.mgg.geophysics.G01463]
The gravity station data (71 records) were gathered by various governmental organizations (and academia) using a variety of methods. This data base was received in March 1989. Principal gravity parameters ...

38. Gravity Data for Indiana (300 records compiled) [gov.noaa.ngdc.mgg.geophysics.G01473]
The gravity data (300 records) were compiled by Purdue University. This data base was received in February 1993. Principal gravity parameters include Free-air Anomalies and Simple Bouguer Anomalies ...

39. Gravity Data for the Greater Portland Area [gov.noaa.ngdc.mgg.geophysics.G01483]
The gravity station data (1,522 records) were compiled by the Portland State University. This data base was received in August 1990. Principal gravity parameters include Free-air Anomalies and Complete ...

40. Gravity Data for the State of New Mexico [gov.noaa.ngdc.mgg.geophysics.G01478]
The gravity station data (21,242 records) were compiled by the University of Texas at El Paso. This data base was received in October 1984. Principal gravity parameters include Free-air Anomalies ...

41. Hawaiian Islands East-West Deflections (DEFLEC96) [gov.noaa.ngdc.mgg.geophysics.G01426]
This 2' surface deflection of the vertical grid for the Principal Hawaiian Islands is the DEFLEC96 model. The computation used about 61,000 terrestrial and marine gravity data held in the National ...

42. Hokkaido Nansei-Oki Tsunami, July 12, 1993 [gov.noaa.ngdc.mgg.photos.G01220]   PARENT DIF
An earthquake occurred off the west coast of Hokkaido and the small offshore island of Okushiri in the Sea of Japan. In two to five minutes the tsunami, one of the largest in Japan's history, engulfed ...

43. Homer, Alaska 3 arc-second DEM [gov.noaa.ngdc.mgg.dem.517]   PARENT DIF
The 3-second Homer Alaska Elevation Grid provides bathymetric data in ASCII raster format of 8/3-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling

44. Idaho Batholith Study Area Gravity Data [gov.noaa.ngdc.mgg.geophysics.G01464]
The gravity station data (32,152 records) were compiled by the U. S. Geological Survey. This data base was received on February 23, 1993. Principal gravity parameters include observed gravity, Free-air ...

45. Izmit (Kocaeli) Turkey Earthquake, August 17 1999, Set 2, Structural Damage [gov.noaa.ngdc.mgg.photos.G01958]   PARENT DIF
On August 17, 1999, at 3:01 A.M. local time (00:01:39.8 UTC) a magnitude (Mw) 7.4 earthquake occurred along the westernmost North Anatolian fault. The earthquake epicenter was 11 km (7 mi) southeast ...

46. Kailua-Kona, Hawaii 1/3 arc-second DEM [gov.noaa.ngdc.mgg.dem.462]   PARENT DIF
The 1/3-second Kailua-Kona Hawaii Elevation Grid provides bathymetric data in ASCII raster format of 1/3-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling

47. King Cove, Alaska 8 arc-second Coastal Digital Elevation Model [gov.noaa.ngdc.mgg.dem.4952]   PARENT DIF
NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's ...

48. Land and Marine Gravity Data on CD-ROM - 1999 Edition [gov.noaa.ngdc.mgg.geophysics.G01352]
The Land and Marine Gravity 1999 Edition 2-volume CD-ROM set contains observed and derived land and marine gravity data contributed by many national and international organizations, from both the ...

49. Marine Gravity from GEOSAT Poster - Report MGG-8 [gov.noaa.ngdc.mgg.geophysics.G01331]
This full color poster of Marine Gravity from GEOSAT over the Southern Ocean is Report MGG-8. In many areas of the global ocean, the depth of the seafloor is not well known because survey lines by ...

50. Measurement of Incoherent Scatter [gov.noaa.ngdc.stp.ionosphere.G00145]
For radio waves transmitted through the ionosphere with frequencies much larger (50 to 1300MHz) than the plasma frequency (up to 15MHz), very small-scale fluctuations of electron density will scatter ...

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