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Climb A Volcano - 'Family Fun - Picnic at the Top' Stand at the VERY TOP of a VOLCANO ... bring a lunch and relax and enjoy the view ... whether by foot or by car ... here are a few spots in Washington, Oregon, California, Arizona, and New Mexico where the entire family can 'Climb a…
By Erica ArnoldIn high school, we learn how to study on your own, flirt with that cutie two desks down, and balance school with family, sports, and a social life. These skills helped me during the past three years. I have, however, been fortunate to get something from high school that I think is…
Although it may seem that we are having more earthquakes, earthquakes of magnitude 7.0 or greater have remained fairly constant throughout this century and, according to our records, have actually seemed to decrease in recent years. There are several reasons for the perception that the number of…
Data about water use is only one kind of water data that USGS compiles. We also collect data about the country's surface water , such as how much water is flowing in our streams and rivers, and when a river reaches 'flood stage.' Ground water is studied -- the amount of water stored in…
You can learn more about the future of the USGS's topographic maps and mapping program at http://nationalmap.gov/digital_map . Further information about The National Map is available at http://nationalmap.gov .
We generally emphasize the following four points: a) Select a coordinate system (also called a "position format") you feel comforatble using. We suggest using Universal Transverse Mercator (UTM) or latitude/longitude. Most users find UTM coordinates easier to locate on USGS…
Not specifically. Our charge is to understand characteristics of the earth, especially the earth's surface, that affect our Nation's land, water, and biological resources. That includes quite a bit of environmental monitoring. Other agencies, especially NOAA and NASA, are specifically funded…
During the three giant caldera-forming eruptions that occurred between 2.1 million and 640,000 years ago, tiny particles of volcanic debris ( volcanic ash ) covered much of the western half of North America, likely a third of a meter deep several hundred kilometers from Yellowstone and several…
Lava and Lava Flows The temperature of basalt lava at Kilauea reaches 1,160 degrees Celsius (2,120 degrees Fahrenheit). -- USGS/VHP Website, 1998 The tube system (lava tubes) of episode 53 (Pu'u O'o eruption, Hawaii) carried lava for 10 kilometers (6 miles) from the vent to the sea. So…
If the earthquake left surface evidence, such as surface ruptures or fault scarps (cliffs made by earthquakes) If a large earthquake has broken the fault since we began instrumental recordings in 1932 If the fault produces small earthquakes that we can record with the denser seismographic network…
The USGS Publications Warehouse ( http://pubs.usgs.gov/ ) has released a new interface and a variety of new content and features. The new version of this tool now includes citations for USGS-authored content including journal articles, books, book chapters, proceedings, and other research…
Continuous real-time water quality information is at http://water.usgs.gov/waterwatch/wqwatch/ . These data are limited to measurable characteristics such as temperature, turbidity, specific conductance (salinity), dissolved oxygen, and pH (acidity). WaterQualityWatch is a USGS web site that…