Browsing Earth and Space Sciences by Issue Date
Now showing items 1-20 of 118
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Bridging seismology and geomorphology: investigations into the 2006 and 2007 Kuril Islands earthquakes and tsunamis
(2010-12)Numerous geophysical and geological observations of the 15 November 2006 and 13 January 2007 Kuril Island earthquake doublet and associated tsunamis help link earthquakes’ seismological characteristics with tsunamis’ ... -
Coastal marsh stratigraphy as an indicator of past earthquakes, Puget Lowland, Washington State
(2011-03)In coastal wetlands fringing Puget Sound lies evidence for large earthquakes 1,100 years ago and subsequent subsidence. This study uses sedimentologic, stratigraphic, and geomorphic tools, as well as tsunami modeling, ... -
The Complexity of Arc Magmatism: A Geochemical Investigation of Crustal Processes Beneath a Highly Productive Volcanic Center, Kamchatka, Russia
(University of Washington Graduate School, 2012)Understanding crustal modification of magmas in volcanic arcs is a fundamental problem of igneous petrology and geochemistry. This dissertation examines the role of crustal processes including crustal assimilation, magma ... -
The Plasma Physics Processes that Drive Ring Current Enhancements during Geomagnetic Storms and Substorms
(2012-09-13)Geomagnetic storms result when energetic particles of solar and ionospheric origin fill Earth's inner magnetosphere and create a strong westward current, known as the ring current. This dissertation presents results from ... -
Hydrated silica on Mars: Global comparison and in-depth analysis at Antoniadi Crater
(2012-09-13)Hydrated silica is found in a variety of Martian deposits within suites of minerals that indicate aqueous alteration, mostly because hydrated silica forms easily in different environments. Because of its relative ubiquity ... -
Bulk mineralogy of Lunar crater central peaks via thermal infrared spectra from the Diviner Lunar Radiometer - A study of the Moon's crustal composition at depth
(2012-09-13)The central peaks of lunar impact craters are thought to be composed of uplifted material originating from varying depths of the crustal column. The crystallization sequence of the early lunar magma ocean resulted in an ... -
Thermal-infrared radiosity and heat-diffusion model for estimating sub-pixel radiant temperatures over the course of a day
(2012-09-13)In temperature/emissivity estimation from remotely measured radiances the general assumption is that scene elements represented by pixels in fact have a single emissivity spectrum and are isothermal. Thus, estimated ... -
Using Salt Accumulations and Luminescence Dating to Study the Glacial History of Taylor Valley, Antarctica
(2012-09-13)Taylor Valley, Antarctica, preserves a record of late Cenozoic Antarctic glaciations. The incursion of the Sea Ice Sheet (RSIS) into lower Taylor Valley during the Last Glacial Maximum is believed to have dammed large ... -
Core complex exhumation in peri-Adriatic extension, and kinematics of Neogene slip along the Saddle Mountains thrust
(2013-02-25)Abstract The geometry and kinematics of map scale faults are the record of tectonic mountain building processes. This study focuses upon three distinct faults in three distinct orogens, the Alpi Apuane detachment in the ... -
Pyroxene Chemistry in Polymict Eucrite Northwest Africa 6475: Contrasts with Juvinas, Stannern and Igdi, and Evaluation of Models for Eucrite Magmatic Evolution
(2013-02-25)The eucrite meteorite suite is the mafic component of a silicate profile that formed from a magma ocean on a minor body, potentially the asteroid Vesta. There are four chemical divisions of eucrites: cumulate (CE), main ... -
U/Pb ages of Eocene and younger rocks of the eastern flank of the central Cascade Range, Washington, USA.
(2013-04-17)Geological units located on the eastern flanks of the central Cascade Range, the Summit Conglomerate of Natapoc Mountain, Sugarloaf Peak, Basalt Peak, Horse Lake Mountain, Pole Ridge, Wenatchee Dome at the Cannon mine, and ... -
Glacier erosion at convergent margins: a numerical and field study in the Chugach-St. Elias Mountains of South Alaska
(2013-07-25)Glacier erosion at convergent margins: a numerical and field study in the Chugach-St. Elias Mountains of South Alaska The Saint Elias range of South Alaska is known for its rapid erosion and uplift (order of 1 cm/yr), ... -
Electrical conductivity of the Pampean Shallow Subduction Region of Argentina near 33S and of the Payunia region of Argentina near 36.5S
(2013-07-25)I present a three-dimensional (3D) interpretation of long period magnetotelluric sites: 117 from 31 - 35 S and 37 from 35 - 38 S in western Argentina. The first field area covers the most horizontal part of the Pampean ... -
Spectroscopic Analysis of Various Phases of Water with an Intrinsic Near-Infrared Optical Sensor System
(2013-07-25)Results and analysis are reported for near-infrared spectra obtained using an intrinsic optical sensor system. An experimental facility was designed to integrate fiber optic cables with an FTIR spectrometer. Wavelength-dependent ... -
Seismic Structure and Crustal Accretion Along an Intermediate-rate Mid-Ocean Ridge Segment
(2013-11-14)Epicenters and magnitudes for 36,523 earthquakes recorded along the Endeavour segment between August 2003 and October 2006 are automatically determined using a local ocean-bottom seismometer (OBS) network. The catalog is ... -
Experimental Investigation into the Enhanced Diamagnetic Perturbations and Electric Currents Downstream of the High Power Helicon Plasma Thruster
(2013-11-14)The high power helicon (HPH) is a compact plasma source that can generate downstream densities of 10<super>17</super>-10<super>18</super> m<super>-3</super> and directed ion energies of 50-70 eV, without the need for grids ... -
Underwater Acoustic Propagation in the Philippine Sea: Intensity Fluctuations
(2013-11-14)In the spring of 2009, broadband transmissions from a ship-suspended source with a 284 Hz center frequency were received on a moored and navigated vertical array of hydrophones over a range of 107 km in the Philippine Sea. ... -
Uncertainty and Resolution in Full-Waveform, Continuous, Geoacoustic Inversion
(2013-11-14)The ocean geoacoustic inverse problem is the estimation of physical properties of the ocean bottom from a set of acoustic receptions in the water column. The problem is considered in the context of equipment and spatial ... -
Modeling global cosmogenic nuclide production rates through first principles
(2013-11-14)The work contained in this thesis is focused on utilizing radiation transport code software as the basis for developing a well validated, first-principles model of global terrestrial cosmogenic nuclide production rates. ... -
Melt-Triggered Seismic Response in Hydraulically-Active Polar Ice: Observations and Methods
(2014-02-24)Glacier ice responds to environmental forcing through changes in its sliding speed and mass balance. While these changes often occur on daily time scales or longer, they are initiated by brittle deformation events that ...