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The East Pacific Rise has been a mecca for research by oceanographers, geologists, marine chemists, and biologists. Follow the links below to learn more about this important research site.

Scientists "See" New Ocean Floor Just Before and After It Is Created
A multidisciplinary research team from six institutions has for the first time successfully anticipated and then chronicled a seafloor eruption along the global mid-ocean ridge, the most active volcanic system on Earth. The event along the East Pacific Rise has provided researchers with a rare opportunity to observe what happens in the immediate aftermath of an eruption.

The East Pacific Rise from Near and Far
What do oceanographers and astronauts have in common? Observations of the complex interactions between different Earth systems, for one...

Ridge 2000 researchers discover/document seafloor eruption
A new eruption on the East Pacific Rise (EPR) was first suspected during a visit to the site by the R/V Knorr in April, 2006. Two follow-up cruises to the EPR site on the R/V New Horizon in April/May, 2006 and the R/V Atlantis in June, 2006 confirmed that a new eruption had, indeed, occurred on the seafloor.

Scientists Lose Instruments, Gain First Look at Seafloor Formation
Ordinarily, losing almost all of one's instruments would be considered a severe setback to any scientist. But when Maya Tolstoy, a marine geophysicist at the Lamont-Doherty Earth Observatory and the Earth Institute at Columbia University, recently learned that two-thirds of the seismometers she placed on the floor of the Pacific Ocean were trapped more than 8,000 feet (2500 meters) underwater, it turned out to be an extremely good sign.

RIDGE 2000 Program
RIDGE is a long-term program of scientific research on mid-ocean ridges and other tectonic spreading centers, sponsored by the National Science Foundation.

Want to learn more about hydrothermal vent systems and the life on them?

The Evolutionary Puzzle of Seafloor Life
Scientists are assembling critical pieces to reconstruct the history of life on the ocean floor

Settling on the Seafloor
Deep in the ocean, larvae search for 'home, sweet home'

On the Seafloor, a Parade of Roses
A third generation of scientists finds the third generation of hydrothermal vent sites

Hydrothermal Vent Systems
Since their discovery in 1977, hydrothermal vents have been found along mid-ocean ridges on the seafloor of the Pacific, Atlantic, and Indian Oceans. These natural, deep-sea plumbing systems ventilate heat and minerals from the interior of the Earth, while supporting complex ecosystems of exotic organisms. These peculiar environments  may represent a model for the origin of life on Earth and on other planets.

Biogeography of deep-sea hydrothermal vent faunas
Distributions of hydrothermal vent organisms on mid-ocean ridges appear to be influenced by features such as deep-ocean circulation patterns, by major topographic characteristics such as deep, cross-cutting fracture zones or changes in depth of the ridge system, and by the position and movement of Earth’s tectonic plates over time.

Do you enjoy online science expeditions? Here are a few of our favorites...

Dive and Discover
Recent expeditions have included the Galapagos Rift, the Juan de Fuca Ridge, Guaymas Basin, the New England Seamounts, the East Pacific Rise, the Indian Ocean, and Antarctica.

Venture Deep Ocean
This site highlights some of the latest discoveries about seafloor volcanoes and vents, and how they create environments for extraordinary lifeforms.

Polar Discovery
The polar regions are experiencing unprecedented environmental changes that are having significant impacts on global climate, ecosystems, and society. Using the latest engineering advancements, scientists are studying the changing climate at heart of the icy Arctic Ocean, the melting glaciers of Greenland, and the creatures of Antarctica’s Southern Ocean. Through daily stories, photos, and videos, Polar Discovery gives you an inside look at these expeditions to the frozen ends of the earth. The adventure begins in April 2007.

Student Experiments at Sea
Each year, middle- and high-school students take part in scientific studies conducted both in the classroom and at sea. Through the web, students work alongside  researchers to learn more about the deep sea.

VISIONS ’05: Expedition to the Underwater Volcanoes of the Northeast Pacific
The Research Vessel Thomas G. Thompson sailed from Seattle Sept. 1 for a five-week research expedition on the Juan de Fuca Ridge, which lies 200 miles off the Washington coast. The VISIONS ’05 programs allowed viewers to participate virtually in the voyage, seeing life-forms and geologic activity at the same time as the scientists participating in the expedition.