Kate Allstadt, ESS Graduate Student

Repeating earthquakes near the Summit of Mount Rainier: Volcanic or Glacial? (and how we're going to find out)

Correlation of earthquake swarm activity with weather. A) Temperatures at Paradise and Camp Muir, B) cumulative precipitation at Paradise, C) Streamgage heights for the White River downstream from Northern glaciers and the Puyallup river downstream of western glaciers. D) Upper-air barometric pressure in hPa interpolated to 4200 meters from nearest NCER/NCAR Reanalysis gridpoint E) Number of repeating earthquakes detected per hour. 1) Start of multiplet activity, 2) First Phase begins 3) Storm invigorates phase 1, 4) Multiplet activity temporarily ceases, 5) Second phase of activity begins with 2 June storm 6) End of multiplet activity.

Katy Atakturk, ESS UndergraduateSediment erosion and provenance from heavy mineral petrography and mixing models in the Eastern Himalayas

Natalie Baker, ESS Undergraduate

Testing for 3,000 km of tectonic translation of northern Washington by Pbisotopes in detrital sediments from the Methow Basin

Lead isotopic concentration data collected from detrital sediment from the Methow Basin. Data was collected using a series of Pb leaching techniques followed by a Multicollector-Inductively Coupled Plasma Mass Spectrometer (MC-ICPMS). Other isotopic concentrations were collected and plotted, and will be compared to the batholith data from the Peninsular Ranges Batholith to determine the sediments’ potential source location.

Jonathan Bapst, ESS Graduate Student

Extensive subsurface water on Mars

Ann Bauer, ESS Undergraduate

High-Precision Pb Isotope Data from Crustal Xenoliths to Examine Magma Source and Crustal Interaction, Bezymianny Volcano, Kamchatka

Aurora Burd, ESS Graduate Student

Discussion of two ocean types in 3D inversion of magnetotelluric data: constant depth & varying conductivity v. varying depth & constant conductivity

The most important feature is the variable resistivity ocean, visible as the bright colors along the edge of South America (the main blue part of the image). My talk will discuss some of the pros and cons of this style of ocean creation versus a more topographically accurate ocean with constant resistivity.

Moon-Young Choi, ESS Graduate Student

The importance of magnetic reconnection at the Earth’s magnetopause

Earth's magnetopause structure indicated by ionospheric proton pressure

Galen Griggs, ESS Undergraduate

Ecological Impacts of the Paleocene-Eocene Thermal Maximum

Zoe Harrold, ESS Graduate Student

Thermodynamic characterization of cadmium and neptunium adsorption onto a common bacterial spore

Zurriya Hasnan, ESS Undergraduate

Seismic Reflection Profiling of Ventura Basin, California

Capturing seismic shot records at Briggs Road, Ventura CA

Rachel Headley, ESS Graduate Student

Simple Solutions for Steady-State Glacier Profiles

Alicia Hotovec, ESS Graduate Student

Drumbeats and Screams on Redoubt Volcano

Each box is a velocity spectrogram from the same seismic station for six nearly consecutive volcanic explosions, where t=0 is the time of the explosion. The bright, upward "gliding" lines are harmonic tremor, where the frequency of this tremor increases from a few Hz to nearly 30 Hz in the minutes before each explosion. The repeatability and high frequency content of this tremor is very unique, and has compelled us to present an alternative to the commonly accepted explanations for harmonic tremor on other volcanoes.

Michael Hutchins, ESS Graduate Student

Tracking the power radiated from lightning over the lifetime of thunderstorms

Ariah Kidder, ESS Graduate Student

Sodium morphology at Mercury

Multi-fluid model showing a flux rope in Mercury’s magnetotail

SeanPaul Le Selle, ESS Graduate Student

Tsunami deposits of the southern Kamchatsky Peninsula

Karl Lang, ESS Graduate Student

Petrographic evidence for a dominant source of Brahmaputra river sediment in the High Himalayan Crystalline Sequence

Compositional variation of river sand from the Brahmaputra river system in NE India

Brooke Medley, ESS Graduate Student

Substantial ice loss in Olympic National Park over the past two decades

Blue Glacier Thinning - (left) Glacier area-altitude distribution, (right) Elevation change over 23 year period by comparing a 1987 USGS DEM and both a 2010 GPS profiling and an uncorrected 2010 ASTER DEM. Total volume changes using each dataset are listed in the legend.

Peter Neff, ESS Graduate Student

Mount Waddington Ice Core Stratigraphy

A preliminary 40-year record of soot deposition from an ice core retrieved near Mt. Waddington, BC, Canada

Caroline Pew, ESS Graduate Student

Fossil Pollen Evidence for an Ancient Climate Event

Early Eocene Pollen

Charles Plummer, ESS Graduate Student

Building a Zoned Eruption

Crystal Poor Ignimbrite, San Juan Mountains, CO

Kristin Poinar, ESS Graduate Student

Temperate Ice under Greenland's Largest Outlet Glaciers

Adelina Prentice, ESS Graduate Student

Investigating Pliocene warm-water upwelling ("permanent El Niño condition") in littoral communities of Peru and southern California

Spruce Schoenemann, ESS Graduate Student

An Update on 17O-excess of H2O from a West Antarctic Ice Core: Method Development and Implementing d17O into an AGCM!

Fluorination line for H2O conversion to O2 to measure 17O-excess of ice core samples.

Jakub Sliwinski, ESS Undergraduate

U, Th, Pb and Sr Isotopic Composition of Northwest Rift Zone Basalts on Tenerife, Canary Islands.

Sr isotope ratio vs Th/U disequilibrium. 238U decays to 230Th indirectly, and so the two isotopes will stay at radioactive equilibrium if left undisturbed (that is, n1λ1 = n2λ2, or (230Th/238U) = 1). Disequilibrium results from fractionation events such as partial melting, but equilibrium is reestablished in about 5 half lives (~380,000 yr). The data suggest a correlation between Sr isotope signature and level of disequilibrium.

Eugenie Song, ESS Graduate Student

Impact craters on the Moon - a bulk composition study via IR emission spectroscopy

Lunar crater Copernicus with Christiansen feature overlay. Background image from LROC WAC, CF from LRO Diviner.

Perry Spector, ESS Graduate Student

Determining the thickness and extent of Antarctic ice during glacial/interglacial cycles

Cosmogenic radionuclide concentrations are a function of exposure to cosmic rays and radioactive decay. Burial of a sample under ice or sediment shields the sample from the incoming cosmic-ray flux. The ratio of 26Al to 10Be vs 10Be is plotted and contour lines indicate exposure and burial time. The half-lives of 26Al and 10Be are 708 kyr and 1.36 Myr, respectively. The results of 5 cycles of exposure (20 kyr) and burial (100 kyr) with no erosion are depicted by the upper plot and the red line on the lower plot.

Robert Weekly, ESS Graduate Student

Construction and Evolution of Oceanic Crust

3-D north-facing perspective of Endeavour Segment bathymetry labeled with hydrothermal vent fields.