Earthquakes
Did You Feel It?
Significant Earthquakes
M 4.8, 1km ENE of Timpson, Texas
Thursday, May 17, 2012 08:12:01 UTC
M 4.6, 12km S of Anchorage, Alaska
Wednesday, May 16, 2012 15:02:51 UTC
M 6.2, 46km NNW of Putre, Chile
Monday, May 14, 2012 10:00:39 UTC
WaterWatch - Current Streamflow Conditions
Landslide monitoring
Current Volcano Alerts
Geomagnetism
Landsat (EarthNow!)
Natural Hazards Support System
USGS Emergency Management
Tue, 15 May 2012
USGS-led survey finds that national wildlife refuges rate highly with visitors.
Tue, 08 May 2012
Join us on June 6 for a centennial look at the greatest volcanic eruption of the 20th century at our June Public Lecture!
Wed, 02 May 2012
As the climate has warmed, many plants are starting to grow leaves and bloom flowers earlier. A new study published in the journal, Nature, suggests that most field experiments may underestimate the degree to which the timing of leafing and flowering changes with global warming.
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Quick look: Climate change projections indicate a steady increase in temperature progressing through the 21st century, generally resulting in snowpack reductions, changes to the timing of snowmelt, altered streamflows, and reductions in soil moisture, all of which could affect water management, agriculture, recreation, hazard mitigation, and ecosystems across the nation... USGS Details Effects of Climate Change on Water Availability in 14 Local Basins Nationwide(Released: Wed, 16 May 2012 6:00:00 EDT)
Quick look: The U.S. Geological Survey and the Department of Veterans Affairs have equipped over 70 VA medical centers across the country with seismic monitoring systems that monitor in real time what happens to buildings during and after earthquakes.... Veterans Hospitals Stay Safe with a Healthy Dose of Earthquake Monitoring(Released: Wed, 9 May 2012 16:40:26 EDT)
Quick look: Thanks to citizen-scientists around the country, the USA National Phenology Network hit a major milestone this week by reaching its one millionth nature observation... A Big Day for Science: Citizens Have Contributed One Million Observations to Top Nature Database(Released: Thu, 3 May 2012 9:00:00 EDT)
Quick look: An unusual dark blue-green lichen, Lecanora sierrae, was discovered over 30 years ago by Czehura near copper mines in the Lights Creek District, Plumas County, Northern California. Using atomic absorption spectroscopy, Czehura found that dark green lichen samples from Warren Canyon contained 4% Cu in ash and suggested that its colour was due to copper accumulation in the cortex. The p Copper localization, elemental content, and thallus colour in the copper hyperaccumulator lichen Lecanora sierra from California(Released: Fri, 11 May 2012 00:00 -0600)
Quick look: Lake Okeechobee in south-central Florida is the second largest freshwater lake in the contiguous United States. Excessive phosphorus loading, harmful high and low water levels, and rapid expansion of non-native vegetation have threatened the health of the lake in recent decades. A study was conducted to monitor discharge and nutrient concentrations from selected tributaries into Lake Concentrations and loads of nutrients in the tributaries of the Lake Okeechobee watershed, south-central Florida, water years 2004-2008(Released: Mon, 14 May 2012 00:00 -0600)
Quick look: We present a new automatic earthquake discrimination procedure to determine in near-real time the tectonic regime and seismotectonic domain of an earthquake, its most likely source type, and the corresponding ground-motion prediction equation (GMPE) class to be used in the U.S. Geological Survey (USGS) Global ShakeMap system. This method makes use of the Flinn–Engdahl regionaliz A global earthquake discrimination scheme to optimize ground-motion prediction equation selection(Released: Fri, 11 May 2012 00:00 -0600)