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Rapid Response

Rapid Response

The earthquakes were coming fast and frequent, as many as 50 to 70 an hour. On the morning of Sunday, Feb. 28, undersea hydrophones began detecting the most intense swarm of earthquakes to occur in the last three years along the Juan de Fuca Ridge, about 200 miles off the Pacific Northwest coast.

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Building a Tsunami Warning Network

Building a Tsunami Warning Network

Since the great Indonesian earthquake and tsunami of December 26, 2004, policy-makers and scientists around the globe have been embracing a rare moment of public attention on the oceans, accelerating plans to create a comprehensive tsunami-warning network and to make citizens better prepared for the next massive wave. Another potent earthquake along the same fault on March 28, 2005, has increased that sense of urgency.

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Ears in the Ocean

Ears in the Ocean

If you sought to delve into the forces that drive and shape the face of the earth and that distinguish it from all other planets in our solar system, you would shine a spotlight on the mid-ocean ridges.

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Ocean Seismic Network Seafloor Observatories

Ocean Seismic Network Seafloor Observatories

Our knowledge of the physical characteristics of Earth’s deep interior is based largely on observations of surface vibrations that occur after large earthquakes. Using the same techniques as CAT (Computer Aided Tomography) scans in medical imaging, seismologists can “image” the interior of our planet. But just as medical imaging requires sensors that surround the patient, seismic imaging requires sensors surrounding the earth.

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