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Federal
Data on the Earth's Magnetic Field and its Secular Change since 1800 29 recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
Information on the past and present orientation of the Earth's magnetic field is available from the National Geophysical Data Center (NGDC) which serves as the... -
Federal
Hawaii Volcanism: Impact on the Environment 27 recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
Fewer than one hundred people have been killed by eruptions in the recorded history of Hawaii, and only one death has occurred in the 20th Century. However, the lava... -
Federal
Global Volcano Locations Database 17 recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
NCEI maintains a database of over 1,500 volcano locations obtained from the Smithsonian Institution Global Volcanism Program, Volcanoes of the World publication. The... -
Federal
NCEI/WDS Global Significant Earthquake Database, 2150 BC to Present 13 recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
The Significant Earthquake Database is a global listing of over 5,700 earthquakes from 2150 BC to the present. A significant earthquake is classified as one that... -
Federal
Marine Trackline Geophysical Database NGDA
National Oceanic and Atmospheric Administration, Department of Commerce —
This data set contains bathymetry, magnetic, gravity and seismic shot point navigation data collected during marine cruises from 1939 to the present. Coverage is... -
Federal
August 1976 Moro Gulf, Philippines Images
National Oceanic and Atmospheric Administration, Department of Commerce —
On August 16, 1976, at 16:11:07 UTC, a magnitude (Mw) 8.0 earthquake shook Mindanao Island in the Philippines. It caused a destructive tsunami in the Celebes Sea that... -
Federal
Environmental Hazards and Mud Volcanoes in Romania
National Oceanic and Atmospheric Administration, Department of Commerce —
Romania, an eastern European country, is severely affected by a variety of natural hazards. These include frequent earthquakes, floods, landslides, soil erosion, and... -
Federal
High Definition Geomagnetic Model 2023
National Oceanic and Atmospheric Administration, Department of Commerce —
The High Definition Geomagnetic Model (HDGM) is a global, high resolution model of the Earth's geomagnetic main and crustal field, providing magnetic field values... -
Federal
NGS Gravity Station Data for the U.S.
National Oceanic and Atmospheric Administration, Department of Commerce —
The gravity station data (1,633,499 records) were gathered by various governmental organizations (and academia) using a variety of methods. This data base was... -
Federal
DMA Reference Base Station Network Data
National Oceanic and Atmospheric Administration, Department of Commerce —
The data (15,904 records documenting 9,090 worldwide gravity base stations) were gathered by various governmental organizations (and academia) using a variety of... -
Federal
May 1960 Puerto Montt, Valdivia, Chile Images
National Oceanic and Atmospheric Administration, Department of Commerce —
On May 22, 1960, a Mw 9.5 earthquake, the largest earthquake ever instrumentally recorded, occurred in southern Chile. The series of earthquakes that followed ravaged... -
Federal
US Historic Declination Calculator
National Oceanic and Atmospheric Administration, Department of Commerce —
This programs derives a table of secular change in magnetic declination for a specified point in the conterminous United States. It utilizes the USD polynomial and... -
Federal
World Magnetic Model 2020
National Oceanic and Atmospheric Administration, Department of Commerce —
The World Magnetic Model is the standard model used by the U.S. Department of Defense, the U.K. Ministry of Defence, the North Atlantic Treaty Organization (NATO) and... -
Federal
EMAG2v3: Earth Magnetic Anomaly Grid (2-arc-minute resolution)
National Oceanic and Atmospheric Administration, Department of Commerce —
EMAG2v3 is a global Earth Magnetic Anomaly Grid compiled from satellite, ship, and airborne magnetic measurements. It is a significant update of the previous release... -
Federal
Nevada Thickness of Cenozoic Deposits
National Oceanic and Atmospheric Administration, Department of Commerce —
This study of gravity data from Nevada is part of a statewide analysis of mineral resources. The main objective of the gravity study were: 1) to infer the structure... -
Federal
Gravity Data for the State of Nevada
National Oceanic and Atmospheric Administration, Department of Commerce —
Gravity data for the entire state of Nevada and adjacent parts of California, Utah, and Arizona are presented. About 80,000 gravity stations were compiled primarily... -
Federal
July 1993 Hokkaido, Japan Images
National Oceanic and Atmospheric Administration, Department of Commerce —
On July 12, 1993, a magnitude 7.6 Ms (7.7 Mw) (HRV) earthquake at 13:17 UT in the Sea of Japan near Hokkaido caused a back-arc tsunami that caused damage in all of... -
Federal
NCEI/WDS Global Significant Volcanic Eruptions Database, 4360 BC to Present
National Oceanic and Atmospheric Administration, Department of Commerce —
The Significant Volcanic Eruptions Database is a global listing of over 600 eruptions from 4360 BC to the present. A significant eruption is classified as one that... -
Federal
United States Earthquake Intensity Database, 1638-1985
National Oceanic and Atmospheric Administration, Department of Commerce —
The United States Earthquake Intensity Database is a collection of damage and felt reports for over 23,000 U.S. earthquakes from 1638-1985. The majority of... -
Federal
Declination Calculator
National Oceanic and Atmospheric Administration, Department of Commerce —
Declination is calculated using the current International Geomagnetic Reference Field (IGRF) model. Declination is calculated using the current World Magnetic Model...