2018 AGU Fall Meeting Update: Dec. 10-11

More than 25,000 scientists from around the world convened this week in Washington, D.C. for the 2018 AGU Fall Meeting. Picture: Roberto Molar Candanosa, DTM.
Thursday, December 13, 2018 

DTM scientists spent the first days of the 2018 AGU Fall Meeting actively participating with poster presentations on various Earth interior and planetary science topics. Held at the Walter E. Washington conference center in Washington, D.C., the meeting brought together more than 25,000 scientists from around the world.

Helen Janiszewski presented her poster titled, "Receiver function imaging of magmatic- and subduction-related structures beneath arc volcanoes: A case study at Cleveland Volcano, Alaska," on Monday, December 10, 2018. Her research involves observations that can help scientists understand magma stored deep under volcanoes. Janiszewski's seismic measurements analyzed these deep magmatic systems, and how they might fuel volcanic eruptions.

Douglas Hemingway presented his poster, "Lunar swirl morphology constrains the geometry, magnetization, and origins of lunar magnetic anomalies," on Tuesday, December 11, 2018. For this presentation Hemingway analyzed bright and dark swirling spots on the moon's surface known as lunar swirls. These swirls can be analyzed to explore possible structures of buried magnetic sources.

Across from Hemingway on Tuesday was Peter Driscoll, who presented results from a recently published paper on the geodynamo. His poster, "Paleomagnetic Biases Inferred from Numerical Dynamos and the Search for Geodynamo Evolution," compared computer simulations of Earth's magnetic field with actual records of ancient rock magnetism.

On Tuesday afternoon, Anaïs Bardyn and Kathleen McKee presented posters on cometary dust and Stromboli Volcano in Italy.

Bardyn was part of the science team for COSIMA, a mass spectrometer flying on the ESA Rosetta orbiter that performed local analysis on dust particles from comet 67P/Churyumov-Geramisenko between 2014 and 2016. At AGU, Bardyn presented results from COSIMA measurements on the elemental composition of 67P, comparing them to data from other cometary missions.

McKee and other DTM volcanologist traveled to Italy to conduct experiments and gather data from Stromboli volcano in May 2018. At AGU, McKee presented her analysis of this field expedition in a poster titled, "Explosion volume flux comparison using seismically derived tilt, infrasound, and gas data at Stromboli Volcano, Italy." Using these data on volcano deformation, infrasound, and gas emissions can help volcanologists link volcanic activity to the size of an eruption before it occurs.

Hélène Le Mével also presented results from Stromboli at AGU. Titled, "Analysis of Seismo-Gravity Signals Associated with Volcanic Explosions Recorded at Stromboli, Italy in May 2018," Le Mével's poster presented her gravimetry work on the volcano. She analyzed the volcano's mild explosive activity by measuring gravity signatures resulting from changes in motion and underground mass at the volcano.

DTM's volcanology presentations continued with Elodie Brothelande, who presented her work on Piton de la Fournaise volcano in Reunion Island. Brothelande's damage modeling seeks to better forecast the timing of volcanic eruptions. Her poster, "Damage modeling at Piton de la Fournaise: linking seismicity and deformation patterns leading to eruptions," shows models of pressure changes in magma reservoirs calculated from deformation observations and seismic data.

Concluding Tuesday night, Peter Driscoll participated in the event, "Habitability: What Earth and the Inner Planets Can Teach Us About the Search for Life on Rocky Exoplanets," hosted at the Carnegie Institution's headquarters building. The event involved a brief overview on the topic of planet formation by former GL postdoc Sarah Stewart, now at University of California Davis. Stewart then joined Driscoll and Arizona State University's Laura Schaefer in a panel discussing planet formation and life beyond Earth.


Keep up with DTM scientists at AGU via Twitter, @CarnegiePlanets and @CarnegieScience using #CarnegieAGU!

Last week, our scientists sat down to give us a quick preview of their #AGU18 presentations. We got them on video for you: https://bit.ly/2SBH2iQ