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J. Orwig

Posted inResearch Spotlights

Large-Scale Electric Currents May Flow Through Mercury's Crust

by J. Orwig 18 March 201516 November 2021

NASA's MESSENGER spacecraft discovered electric currents in Mercury's magnetosphere directed toward and away from the planet. Do the currents reach the planet? If so, where do they go?

Posted inResearch Spotlights

Unusual Echo Signal in Atmospheric E Layer

by J. Orwig 11 March 201520 October 2021

Metallic plasma layers in Earth's ionosphere interfere with radio communications and produce odd echo behavior at specific frequencies.

Posted inResearch Spotlights

Found: The Submarine Source of an 1891 Eruption Near Sicily

by J. Orwig 3 March 20153 March 2015

Analysis of a volcano may help explain why some eruptions produce volcanic balloons–hollow chunks of lava that encase a gas-filled cavity.

Posted inResearch Spotlights

What Drove Sea Surface Temperature Change During the Pleistocene?

by J. Orwig 2 March 20152 March 2015

New information suggests that atmospheric carbon dioxide concentration was just one of the main drivers of warming sea surface temperatures in the Pleistocene.

Posted inResearch Spotlights

What Causes Broadband Electrostatic Noise in Space?

by J. Orwig 25 February 20152 March 2015

Factors that generate electrostatic noise involve how electric fields compress magnetized plasmas.

Posted inResearch Spotlights

Rapid Gas Hydrate Forms Pockmarks in Nigeria's Seafloor

by J. Orwig 12 February 20152 March 2015

The seafloor in deep water regions off the coast of Nigeria is speckled with pockmarks that scientists suggest were mainly made by the rapid formation of gas hydrate.

Posted inResearch Spotlights

Hillslopes Regulate Sediment Supply to River Channels

by J. Orwig 21 January 201527 April 2022

New study rethinks dynamics of runoff-driven erosion in response to rainstorms.

Posted inResearch Spotlights

Archean Rocks in the Acasta Gneiss Complex

by J. Orwig 31 December 201427 January 2022

Studying Archean-age gneissic and schistic rocks in northwestern Canada, researchers determined that the source of these rocks formed 4.3 billion years ago.

Posted inResearch Spotlights

Circulation a Key Factor in Mediterranean Algal Growth

by J. Orwig 23 December 201424 July 2015

Scientists use satellite and robotic field data to study the environmental conditions driving phytoplankton blooms in the northwestern Mediterranean Sea.

Posted inResearch Spotlights

Human Actions Affect Greenland Ice Sheet Surface Mass Balance

by J. Orwig 23 December 201424 July 2015

Scientists address human-driven trends in the Greenland Ice Sheet surface mass balance.

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