Alaska

Hawaii

British Columbia

Nevada

California

None

A world map of earthquake activity from 2000 to 2019. Circles of varying sizes represent earthquake magnitudes, with larger circles for higher magnitudes. Significant activity is noted in Colombia, Iran, Turkey, Tanzania, and the North Atlantic Ocean.

Time series data showing locations and Richter scale magnitudes of significant earthquakes from 1800 BCE to 2019. Use timeline controls at bottom of the map to display data by time period.

Earthquakes

World

NOAA

Richter scale magnitude

Northwest Territories

Florida

Rhode Island

Washington

Nunavut

Maine

Nova Scotia

Virginia

Delaware

Prince Edward Island

Texas

Louisiana

North Carolina

Oregon

New Brunswick

Alabama

Newfoundland and Labrador

New Jersey

Connecticut

Massachusetts

New York

Maryland

Québec

Ontario

A map shows ocean climate zones with different colors indicating Equatorial, Tropical, Subtropical, Temperate, Subpolar, and Polar zones.&nbsp;

Ocean Climate Zones

The map illustrates the various ocean climate zones around the globe:Equatorial Zone: Located around the equator, covering regions like the central Pacific Ocean, the equatorial Atlantic Ocean, and parts of the Indian Ocean near the equator.Tropical Zone: Found just north and south of the equatorial zones, covering areas like the northern Indian Ocean, parts of the Atlantic Ocean near the equator, and the central Pacific Ocean.Subtropical Zone: Located further from the equator, covering areas like the southern parts of the North Atlantic and North Pacific Oceans, northern parts of the South Atlantic and South Pacific Oceans, and parts of the Indian Ocean.Temperate Zone: Found in mid-latitude regions, covering areas like the North Atlantic Ocean off the coast of Europe and North America, the North Pacific Ocean off the coast of North America, and the Southern Ocean surrounding Antarctica.Subpolar Zone: Located in higher latitude regions, covering areas like the North Atlantic Ocean near Greenland, the North Pacific Ocean near Alaska, and parts of the Southern Ocean.Polar Zone: Found in the polar regions, covering areas like the Arctic Ocean and the Antarctic region.Warm Currents: Include currents such as the Gulf Stream in the North Atlantic Ocean, the Kuroshio Current in the North Pacific Ocean, and the Brazil Current in the South Atlantic Ocean.

Oceans

Arizona

Utah

Yukon

Idaho

Wyoming

North Dakota

Kentucky

Mississippi

West Virginia

Nebraska

Missouri

New Mexico

Kansas

Wisconsin

Michigan

Alberta

Pennsylvania

Georgia

Manitoba

Oklahoma

Tennessee

Arkansas

Indiana

Minnesota

Iowa

Illinois

A map illustrates the major karst regions in the world.

Major Karst Regions

Areas shaded in peach represent major karst regions worldwide. In North America, significant karst areas are found in northern and central Canada and the eastern and southwestern United States. In Central America, karst landscapes are prevalent, with notable areas in eastern Brazil. Europe features many karst regions, extending across North Africa from Algeria to Egypt and reaching south to Nigeria in the west and South Sudan in the east. Southern Africa also has prominent karst areas. In Southwest Asia, karst regions are widespread, as well as in Siberia and south-central China. New Guinea and eastern and southern Australia are also marked by significant karst landscapes.

Display by:	Earthquakes									Ocean Climate Zones					Major Karst Regions
	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Equatorial	Tropical	Subtropical	Temperate	Subpolar	Major Karst Regions
Alaska		1											2.05%	0.827%
Rhode Island													8.19%
Washington													0.763%
Delaware													4.66%
Prince Edward Island													54.8%
Louisiana											3.62%
Hawaii										2.56%	35.3%
Oregon													0.245%
British Columbia													1.39%
New Jersey													3.26%
Connecticut													0.661%
Massachusetts												0.220%	7.89%
California	1											0.550%	0.247%
Arizona															6.12%
Utah															16.5%
Yukon															2.27%
Northwest Territories														1.67%	1.44%
Florida											2.09%				42.1%
Idaho															0.527%
Wyoming															4.22%
Nunavut														4.30%	3.79%
Maine													1.22%		1.04%
North Dakota															18.3%
Kentucky															7.06%
Nova Scotia													8.68%		45.5%
Virginia												0.104%	1.74%		17.5%
Mississippi															5.48%
West Virginia															27.1%
Nebraska															5.07%
Texas										0.188%					0.625%
Missouri															0.407%
North Carolina												2.25%			13.2%
New Brunswick													2.16%		7.07%
Alabama											0.128%				6.35%
New Mexico															29.5%
Kansas															2.31%
Wisconsin															31.1%
Newfoundland and Labrador													1.85%	0.552%	9.36%
Michigan															8.03%
Alberta															4.20%
Pennsylvania															14.8%
Nevada	1														4.77%
Georgia															38.3%
New York													1.81%		1.63%
Maryland													3.11%		0.239%
Québec													0.264%	0.352%	2.89%
Manitoba															13.2%
Oklahoma															4.68%
Tennessee															4.04%
Ontario														0.107%	5.81%
Arkansas															17.2%
Indiana															33.8%
Minnesota															16.9%
Iowa															0.441%
Illinois															16.2%

MapMaster 3

Earthquakes