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Wrong Jay Melosh?

Jay Melosh

Planetary Geologist

Purdue University

HQ Phone:  (765) 494-4600

Direct Phone: (765) ***-****direct phone

Email: j***@***.edu


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Purdue University

550 Stadium Mall Dr. Civil Engineering Building, Room G216B

West Lafayette, Indiana,47907

United States

Company Description

The Purdue Office of Technology Commercialization operates one of the most comprehensive technology transfer programs among leading research universities in the U.S. Services provided by this office support the economic development initiatives of Purdue Univer... more

Find other employees at this company (37,727)

Background Information

Employment History

Planetary Geologist

Discover Financial Services LLC

Told New Scientist

University of Arizona , USA

Regents Professor

U.A.S Corporation


The Meteoritical Society


Gravity Recovery


The Geological Society of America Inc


American Association for the Advancement of Science


American Geophysical Union



Science Team Member of Deep Impact Mission


Member of the Science Team

Geological Society


University of Arizona

Planetary Geologist

Bavarian Geological Institute

Guggenheim Fellow and A Humboldt Fellow


AB degree


Princeton University



Princeton University


University of Arizona


Physics CIA-Initiated Remote Viewing Program

Stanford Research Institute




physics and geology

California Institute of Technology

Web References(190 Total References)

Mercury Is Shrinking More Than Thought | Chicago Council on Science & Technology [cached]

Jay Melosh, a planetary geologist at Purdue University in West Lafayette, Ind., suspects that even more lobate scarps may be lurking out there.
"Many of these things may still be hiding," he says.

Vibrations make large landslides flow like fluid - Science and Technology Research News [cached]

"There are a few examples where these slides have devastated towns, even when they were located at seemingly safe distances from a mountainside," said Johnson, who started working on the project as a student of Jay Melosh, distinguished professor of earth, atmospheric and planetary sciences and physics at Purdue University.
"It has been known for more than a century that very large, dry landslides travel in a fluid-like manner, attaining speeds of more than 100 mph, traveling tens to hundreds of kilometers from their sources and even climbing uphill as they overwhelm surprisingly large areas," said Melosh, who was part of the research team. In 1979, Melosh proposed a mechanism called "acoustic fluidization" to explain these long runouts. Slides of sufficient size, Melosh proposed, would generate vibrational waves that propagate through the rock debris. Those results of the new model are consistent with the acoustic fluidization idea that Melosh had proposed nearly 40 years ago, before computer power was adequate to confirm it. "Campbell and I had a long-standing friendly rivalry, and he did not believe my proposed acoustic fluidization mechanism could possibly explain his findings in the simulations," Melosh said. Brandon C. Johnson, Charles S. Campbell, H. Jay Melosh

"Those gravity variations have been known for some time, but not with the precision we have now," says Jay Melosh, a professor of earth, atmospheric, and planetary sciences at Purdue University.
Melosh and colleagues, who published their findings in Science, made the measurements as part of NASA's GRAIL mission, which launched two satellites to the moon in 2011. "The warmer, deeper rocks in the moon were more fluid and moved inward after the impact, carrying the crustal rocks inward toward the center, and that's what made the faults," says Melosh. Understanding the cratering of the moon 3.85 billion years ago can give scientists clues about the formation of other planets, including Earth. "If the moon was getting smacked up by all these different impacts, the Earth absolutely had to as well," Melosh says. "The early Earth probably looked just like the moon. We're looking back in time and seeing what the Earth would have looked like had it not had plate tectonics and subsequent geologic activity that erased any major trace of those early impacts." Some theories even include the idea that the bombardment of Earth by asteroids and other objects may have led to life on the planet, adds Melosh.

In an era when the size of the atomic-weapons stockpile has been shrinking as a result of arms-control treaties and other factors, asteroid defense "may be an excuse for keeping the nuclear arsenal together," said Jay Melosh, a professor of earth, atmospheric and planetary sciences at Purdue University.
But he thinks there are better, nonnuclear ways for defending the planet. Among possible options: a "gravity tractor" or an "impactor.

Both the Earth and moon are safe - "this time", said Jay Melosh, professor of Earth and atmospheric sciences at Purdue University.

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