esrl.noaa.gov的 10 大竞争对手

drought.gov

Explore resources for soil moisture network operators, curated by the National Coordinated Soil Moisture Monitoring Network.

iswa.gsfc.nasa.gov

NASA's Community Coordinated Modeling Center (CCMC) provides free access to space weather models, simulation runs-on-request, real-time space weather predictions, visualization tools, and model validation for the research community.

asd.gsfc.nasa.gov

astrophysics research to support astroparticle (gamma-ray and cosmic-ray), x-ray, gravitational-wave, observational cosmology, exoplanet and stellar astrophysics.

das.nebraska.gov

department of administrative services

igppweb.ucsd.edu

We're sorry, the page you requested is not available.IGPP recently redesigned this website and the information you were looking for may be at a new URL. You may want to:Search the siteCheck our home pageLook up faculty or staff in our directory

volcano.si.edu

Masaya volcano in Nicaragua has erupted frequently since the time of the Spanish Conquistadors, when an active lava lake prompted attempts to extract the volcano's molten 'gold' until it was found to be basalt rock upon cooling. It lies within the massive Pleistocene Las Sierras caldera and is itself a broad, 6 x 11 km basaltic caldera with steep-sided walls up to 300 m high. The caldera is filled on its NW end by more than a dozen vents that erupted along a circular, 4-km-diameter fracture system. The Nindirí and Masaya cones, the source of observed eruptions, were constructed at the southern end of the fracture system and contain multiple summit craters, including the currently active Santiago crater. A major basaltic Plinian tephra erupted from Masaya about 6,500 years ago. Recent lava flows cover much of the caldera floor and there is a lake at the far eastern end. A lava flow from the 1670 eruption overtopped the north caldera rim. Periods of long-term vigorous gas emission at roughly quarter-century intervals have caused health hazards and crop damage.