Finding Gravitational Waves in the Seismic Din
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VOL. 97 NO. 7 1 APR 2016 Finding Gravitational Waves in the Seismic Din Cuts to Australian Climate Science Support Networks for Graduate Student Women Visualizing Cross-Sectional Data Earth & Space Science News Contents 1 APRIL 2016 PROJECT UPDATE VOLUME 97, ISSUE 7 16 Visualizing Cross-Sectional Data in a Real-World Context Combining the capabilities of an open- source drawing tool with Google Earth™ maps allows researchers to visualize real-world cross-sectional data in three dimensions. PROJECT UPDATE 20 Unmanned Platforms Monitor the Arctic Atmosphere In the Arctic, drones and tethered 13 balloons can make crucial atmospheric measurements to provide a unique perspective on an environment particularly COVER vulnerable to climate change. Seeing the Gravitational Waves, Despite the Seismic Waves MEETING REPORT For detectors to sense the minute jolt of a gravitational wave Precipitation Data announced in February, savvy geophysicists and engineers had to keep 10 Key to Food Security Earth’s tiniest jiggles from reaching ultrasensitive instruments. and Public Health Earth & Space Science News Eos.org // 1 Contents DEPARTMENTS Editor in Chief Barbara T. Richman: AGU, Washington, D. C., USA; eos_ [email protected] Editors Christina M. S. Cohen Wendy S. Gordon Carol A. Stein California Institute Ecologia Consulting, Department of Earth and of Technology, Pasadena, Austin, Texas, USA; Environmental Sciences, Calif., USA; wendy@ecologiaconsulting University of Illinois at cohen@srl .caltech.edu .com Chicago, Chicago, Ill., USA; [email protected] José D. Fuentes David Halpern Department of Meteorology, Jet Propulsion Laboratory, Pennsylvania State Pasadena, Calif., USA; University, University davidhalpern29@gmail Park, Pa., USA; .com [email protected] Editorial Advisory Board M. Lee Allison, Earth and Space John W. Lane, Near-Surface Geophysics Science Informatics Jian Lin, Tectonophysics Mark G. Flanner, Atmospheric Figen Mekik, Paleoceanography Sciences and Paleoclimatology Nicola J. Fox, Space Physics Jerry L. Miller, Ocean Sciences 26 and Aeronomy Michael A. Mischna, Planetary Sciences Steve Frolking, Biogeosciences Thomas H. Painter, Cryosphere Sciences Edward J. Garnero, Study of the Philip J. Rasch, Global Environmental Earth’s Deep Interior Change 25 AGU News Michael N. Gooseff, Hydrology Eric M. Riggs, Education AGU Signs Agreement with Council Brian C. Gunter, Geodesy Adrian Tuck, Nonlinear Geophysics Kristine C. Harper, History Sergio Vinciguerra, Mineral on Undergraduate Research. of Geophysics and Rock Physics Susan E. Hough, Natural Hazards Andrew C. Wilcox, Earth and Planetary Emily R. Johnson, Volcanology, Surface Processes 26–29 Research Spotlight Geochemistry, and Petrology Earle Williams, Atmospheric Keith D. Koper, Seismology and Space Electricity New Solar Wind Model Could Robert E. Kopp, Geomagnetism Mary Lou Zoback, Societal Impacts Improve Space Weather Forecasts; and Paleomagnetism and Policy Sciences Distant Rains Contributed to Staff La Niña Ocean Warming Event; Production: Faith A. Ishii, Production Manager; Melissa A. Tribur, Senior Production Satellites Reveal Dynamics of Specialist; Liz Castenson, Editorial and Production Coordinator; Yael Fitzpatrick, Manager, Design and Branding; Valerie Bassett and Travis Frazier, Electronic Suspended Mineral Particles; Graphics Specialists Tracking the Fate of Antarctica’s Ice; Editorial: Peter L. Weiss, Manager/Senior News Editor; Mohi Kumar, Scientific 7 Ocean Waves Vibrating the Ross Ice Content Editor; Randy Showstack, Senior News Writer; JoAnna Wendel, News Writer Shelf; Can We Predict How Volcanic Marketing: Angelo Bouselli, Marketing Program Manager; Jamie R. Liu, Manager, Marketing Ash Disperses After an Eruption? Advertising: Christy Hanson, Manager; Tel: +1-202-777-7536; Email: advertising@ 3–7 News agu.org Final Mirror Segment Added to 30–32 Positions Available ©2016. American Geophysical Union. All Rights Reserved. Material in this issue may Powerful Future Space Observatory; Current job openings in the Earth be photocopied by individual scientists for research or classroom use. Permission Scientists Denounce Pending is also granted to use short quotes, figures, and tables for publication in scientific and space sciences. books and journals. For permission for any other uses, contact the AGU Publications Australian Climate Science Cuts; Office. Climate Change Freezes Mountain Eos (ISSN 0096-3941) is published semi-monthly, on the 1st and 15th of the month by Wildflower Reproduction; Court Inside Back Cover: the American Geophysical Union, 2000 Florida Ave., NW, Washington, DC 20009, Delay on U.S. Climate Plan Won’t USA. Periodical Class postage paid at Washington, D. C., and at additional mailing Postcards from the Field offices. POSTMASTER: Send address changes to Member Service Center, 2000 Stop Clean Energy Efforts. Florida Ave., NW, Washington, DC 20009, USA. Cambrian thrombolites sit like Member Service Center: 8:00 a.m.–6:00 p.m. Eastern time; Tel: +1-202-462-6900; giant macarons on western 10 Meeting Report Fax: +1-202-328-0566; Tel. orders in U.S.: 1-800-966-2481; Email: [email protected]. Newfoundland’s shore. Use AGU’s Geophysical Electronic Manuscript Submissions system to submit a Precipitation Data Key to Food manuscript: http://eos-submit.agu.org. Security and Public Health. Views expressed in this publication do not necessarily reflect official positions of the On the Cover American Geophysical Union unless expressly stated. A simulation of the gravitational Christine W. McEntee, Executive Director/CEO 11–12 Opinion waves generated by the merger Creating Local Support Networks of two black holes. Credit: for Graduate Student Women. NASA/C. Henze facebook.com/AmericanGeophysicalUnion @AGU_Eos linkedin.com/company/american-geophysical-union youtube.com/user/AGUvideos 2 // Eos 1 April 2016 NEWS Scientists also anticipate that the observa- Final Mirror Segment Added to tory will help them better understand the evo- lution of galaxies, mysteries of star formation, Powerful Future Space Observatory and the birth of planetary systems, Straughn said, noting some of the observatory’s science themes (see http://bit.ly/JWST- themes). Top Priority for the Astronomical Community JWST, formerly known as the Next Generation Space Telescope, ranked as the top priority of the astronomical community in the 2000 National Academy of Sciences decadal survey for astronomy and astrophysics (see http://bit .ly/Astro-Decadal). Its instrument suite includes JWST’s primary imager, a near- infrared camera that covers infrared wave- lengths from 0.6 to 5 micrometers. This cam- era can detect light from the earliest stars and galaxies, stars in nearby galaxies, young stars in the Milky Way, and Kuiper Belt objects. The instrument suite also includes a near-infrared spectrograph, covering the same wavelength range as the near- infrared camera; a mid- infrared instrument, with a camera and spec- trograph, covering the wavelength range of 5 to 28 micrometers; and a near-infrared imager and slitless spectrograph, with a wave- NASA/Chris Gunn NASA/Chris Inside a massive clean room at NASA Goddard Space Flight Center in Greenbelt, Md., the James Webb Space Tele- length range of 0.8 to 5.0 micrometers. scope team used a robotic arm to install the last of the telescope mirror’s 18 segments. Testing the Components Those instruments underwent thermal tests onstruction of the large space tele- JWST, explained Straughn. She added that the early this year inside a space environment scope that is next in the Hubble Tele- new telescope will be “about 100 times more simulator facility at Goddard—a vacuum C scope lineage has reached two major powerful” than the Hubble Telescope, thanks chamber where scientists and engineers low- milestones. Scientists and technicians at to JWST’s tennis court–sized mirror, the infra- ered the temperature to 42 kelvins and below. NASA Goddard Space Flight Center in Green- red wavelength range it will observe, and the In the meantime, scientists and technicians in belt, Md., recently installed and aligned the efficiency of its set of instruments. white “bunny suits” inside a massive clean last of the 18 hexagonal segments of the infra- room at Goddard precisely assembled 18 gold- red telescope’s primary mirror, and they suc- Key Science Themes coated beryllium hexagonal segments to form cessfully completed a series of cryogenic tests JWST “is going to completely revolutionize our the telescope’s primary mirror. Each segment, on the telescope’s instrument package. understanding of exoplanets”—those distant protected from dust by a black carbon- “We have been, for years and years, leading planets that orbit stars other than our Sun— composite cover, weighs about 40 kilograms. up to this point of putting the [mirror] pieces by helping scientists learn more about their The assembled mirror spans 6.5 meters, together,” Amber Straughn, an astrophysicist atmospheres, Straughn said. JWST, which is 2.7 times the diameter of Hubble’s mirror. and deputy project scientist for science com- an international project led by NASA with Next steps include more testing and munications, said at a late January presenta- major contributions from the European Space assembly of all JWST components in prepara- tion at Goddard, where the mirror has been Agency and Canadian Space Agency, could also tion for its 2018 launch from French Guiana. assembled and where the main instruments of observe the outer planets in our own solar For JWST project manager Bill Ochs, the com- the