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Tag Archives: Hawaii Institute of Geophysics and Planetology

Retracing the origins of a massive, multi-ring crater

Free-air gravitational anomalies (red = mass excess; blue = mass deficit) and a shaded topographic relief of the Moon’s Orientale impact basin. This gravitational field model, based on measurements acquired from the NASA GRAIL mission, shows the detailed structure of the central basin depression that is filled with dense mare basalts, as well as the rings that formed due to gravitational collapse of the initial crater cavity shortly after the impact. (credit: Ernest Wright/NASA/GSFC Scientific Visualization Studio)

An international team of scientists, led by researchers at the Massachusetts Institute of Technology (MIT), have reconstructed the extreme collision that created one of the moon’s largest craters, 3.8 billion years ago. Jeffrey Taylor, a professor in the University of Hawaiʻi at Mānoa School of Ocean and Earth Science and Technology, was among the scientists who retraced the moon’s dramatic …

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International collaboration expands knowledge of munitions dumped at sea

Collecting a sea star near a sea-dumped munition. Credit: HUMMA

A special issue of the academic journal Deep-sea Research II, published recently, is devoted to expanding understanding of the global issue of chemical munitions dumped at sea. The publication was edited by Margo Edwards, interim director of the University of Hawaiʻi at Mānoa’s Hawaiʻi Institute of Geophysics and Planetology, and Jacek Beldowski, Science for Peace and Security MODUM (Towards the …

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Novel tsunami detection network uses navigation systems on commercial ships

UH Mānoa researchers have equipped 10 Matson and Maersk Line ships with real-time geodetic GPS systems and satellite communications to create a network of low-cost tsunami sensors.

Accurate and rapid detection and assessment of tsunamis in the open ocean is critical for predicting how they will impact distant coastlines, enabling appropriate mitigation efforts. Scientists from the University of Hawaiʻi at Mānoa School of Ocean and Earth Science and Technology (SOEST) are using commercial ships operating in the North Pacific to construct a network of low-cost tsunami sensors …

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UH researchers shed new light on the origins of Earth’s water

Arial photograph of the most recent eruption at the Holuhraun lava field in Iceland. A proportion of the water released as vapor during this eruption is thought to be sourced directly from the Icelandic mantle plume. Dr. Hallis and her colleagues measured Icelandic and Baffin Island rocks where plume water was trapped inside the rock, rather than released into the atmosphere. Photo by Magnús Tumi Guðmundsson.

Water covers more than two-thirds of Earth’s surface, but its exact origins are still something of a mystery. Scientists have long been uncertain whether water was present at the formation of the planet, or if it arrived later, perhaps carried by comets and meteorites. Now researchers from the University of Hawaii at Manoa, using advanced ion-microprobe instrumentation, have found that …

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U.N. task force says new ocean telecom cables should be ‘green’

global undersea communications cable infrastructure

The global system of submarine telecommunications cables that supports our connected world is deaf, dumb and blind to the external ocean environment – and represents a major missed opportunity for tsunami warning and global climate monitoring, according to UH scientists and a United Nations task force. “For an additional 5-10 percent of the total cost of any new cable system …

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Massive debris pile reveals risk of huge tsunamis in Hawaii

1946 Hawaii tsunami

A mass of marine debris discovered in a giant sinkhole provides evidence that at least one mammoth tsunami, larger than any in Hawaiʻi’s recorded history, has struck the islands, and that a similar disaster could happen again, new research finds.  Scientists, led by Rhett Butler, Director of the Hawai‘i Institute of Geophysics and Planetology (HIGP) at UH Mānoa, are reporting …

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Water in Moon rocks provides clues and questions about lunar history

Pyroclastic glass beads

A recent review of hundreds of chemical analyses of Moon rocks indicates that the amount of water in the Moon’s interior varies regionally – revealing clues about how water originated and was redistributed in the Moon.  These discoveries provide a new tool to unravel the processes involved in the formation of the Moon, how the lunar crust cooled, and its impact …

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Space dust carries water and organic compounds

Interplanetary dust particles and sun

Researchers from the University of Hawaii at Manoa (UHM) School of Ocean and Earth Science and Technology (SOEST), Lawrence Livermore National Laboratory, Lawrence Berkeley National Laboratory, and University of California – Berkeley have discovered that interplanetary dust particles (IDPs) could deliver water and organics to the Earth and other terrestrial planets. Interplanetary dust, dust that has come from comets, asteroids, …

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Infrasound informs fresh look at Russian meteor fall

Chelyabinsk Infrasound

The Russian meteor that rocked the world on 15 February 2013 appeared 30 times brighter than the sun, and we may be in for more airbursts of this size than we had previously anticipated.  These are some of the new findings about the Chelyabinsk meteor fall included in the Nov. 6 electronic edition of the scientific journal Nature. Much of …

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Award examines volcanic crises in the USA: from precursors to resilience

Kilauea Volcano

The University of Hawaiʻi at Mānoa School of Ocean and Earth Science and Technology (SOEST) has been awarded one of the first grants in a new large-scale research direction by the U.S. National Science Foundation (NSF). The grant is one of several made this month by NSF seeking to mitigate disasters by creating broad, interdisciplinary, multi-institutional teams of individuals that …

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