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Comma-separated values (.csv) file containing data related to mercury concentrations in dragonfly samples from U.S. National Parks collected as part of the Dragonfly Mercury Project (DMP). First posted - September 14, 2018 Revised - October 18, 2019, ver. 2.0 Revised - February 4, 2020, ver. 3.0 Revised - October 28, 2020, ver. 4.0
Categories: Data,
Data Release - Revised;
Tags: Acadia National Park,
Allegheny Portage Railroad National Historic Site,
Apostle Islands National Lakeshore,
Appomattox Court House National Historical Park,
Battle Creek Cypress Swamp, All tags...
Bear Creek Lake Park,
Bear Meadows Natural Area,
Big Bend National Park,
Big Cypress National Park,
Big Thicket National Preserve,
Cape Cod National Seashore,
Capitol Reef National Park,
Carl Sandburg Home National Historic Site,
Channel Islands National Park,
Chickasaw National Recreation Area,
Colorado National Monument,
Congaree National Park,
Cuyahoga Valley National Park,
Death Valley National Park,
Delaware Water Gap National Recreation Area,
Denali National Park and Preserve,
Devils Tower National Monument,
East Inlet Natural Area-Connecticut Lakes Nature Preserve,
Environmental Health,
Everglades National Park,
Gateway National Recreation Area,
Glacier Bay National Park & Preserve,
Glacier National Park,
Golden Gate National Recreation Area,
Grand Portage National Monument,
Grand Teton National Park,
Great Basin National Park,
Great Sand Dunes National Park,
Great Smoky Mountains National Park,
Gulf Islands National Seashore,
Homestead National Historic Site,
Hot Springs National Park,
Indiana Dunes National Park,
Isle Royale National Park,
Jean Lafitte National Historical Park and Preserve,
John Day Fossil Beds National Monument,
Katmai National Park and Preserve,
Kenilworth Park & Aquatic Gardens,
Klondike Gold Rush National Historical Park,
Knife River Indian Villages National Historic Site,
Lake Clark National Park,
Lassen Volcanic National Park,
Lewis and Clark National Historical Park,
Mammoth Cave National Park,
Marsh-Billings-Rockefeller National Park,
Maurice Wild & Scenic River,
Minute Man National Historical Park,
Mississippi National River & Recreation Area,
Monocacy National Battlefield,
Montezuma Castle National Monument,
Mount Rainier National Park,
Natchez Trace Parkway and National Scenic Trail,
Niobrara National Scenic River,
North Cascades National Park,
Olympic National Park,
Ozark National Scenic Riverway,
Padre Island National Seashore,
Pictured Rocks National Lakeshore,
Pinnacles National Park,
Pipestone National Monument,
Prince William Forest Park,
Redwood National Park,
Richmond National Battlefield Park,
Rock Creek Park,
Rocky Mountain National Park,
Roosevelt-Vanderbilt National Historic Sites,
Saguaro National Park,
Saint Croix National Scenic Riverway,
Saint-Gaudens National Historic Site,
San Juan Island National Historical Park,
Santa Monica Mountains National Recreation Area,
Sequoia & Kings Canyon National Parks,
Shenandoah National Park,
Sleeping Bear Dunes National Lakeshore,
Tallgrass Prairie National Preserve,
Timucuan Ecological Historic Preserve,
Tumacacori National Historical Park,
Tuzigoot National Monument,
USGS Science Data Catalog (SDC),
Upper Delaware Scenic & Recreational River,
Valles Caldera National Preserve,
Voyageurs National Park,
Weir Farm National Historic Site,
Women’s Rights National Historical Park,
Yellowstone National Park,
Yosemite National Park,
Zion National Park,
biota,
environment,
mercury contamination, Fewer tags
Degassing thermal features at Yellowstone National Park include spectacular geysers, roiling hot springs, bubbling mud pots, fumaroles, frying pans, and areas of passive degassing characterized by steaming ground. Most of these features are readily identified by visible clouds of steam that are occasionally accompanied by a strong “rotten egg” odor from emissions of hydrogen sulfide gas. Gas compositions typically are greater than 90% carbon dioxide with lesser amounts of helium, hydrogen, hydrogen sulfide, methane, nitrogen and other trace components. The composition of the gas and relative amounts of gas and steam relate both to the type of feature as well as the geographic location within the park. In 2003 we...
Categories: Data,
Data Release - Revised;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: USGS Science Data Catalog (SDC),
Yellowstone National Park,
Yellowstone National Park,
gas chemistry,
stable isotopes, All tags...
volcano, Fewer tags
Monitoring the chloride (Cl) flux in the major rivers draining Yellowstone National Park (YNP) provides a holistic view of the thermal output from the underlying magma reservoir, and abrupt fluctuations in the Cl flux may signify changes in hydrothermal activity. The U.S. Geological Survey (USGS) and the National Park Service (NPS) have collaborated on Cl flux monitoring of the major rivers since the 1970s. In the past, researchers collected water samples from the major rivers in YNP, but funding restrictions, winter conditions, and the great distances between sites limited the number of samples collected annually. Beginning in 2010, specific conductance, which is relatively easy to measure and can be automated,...
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