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Items (81-100) out of 175 results

Imaging the Lithosphere and Asthenosphere Beneath North America with Rayleigh Wave Phase Velocity and Amplification

Description:
The life cycle of a continent is driven by the very dynamic lithosphere and asthenosphere system. The deformation associated with tectonic events, such as plate …
Year:
2022
Contributor:
Babikoff, Jordyn (creator)
Dalton, Colleen (Advisor)
Fischer, Karen (Reader)
Parman, Stephen (Reader)
Tsai, Victor (Reader)
Gaherty, James (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Rayleigh waves
Geophysics
Seismic tomography
Lithosphere
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Impact Vaporization: Experimental and Numerical Insights

Description:
Upon hypervelocity impact, projectile and target materials are frequently shocked to pressures and temperatures sufficient to induce complete vaporization. Vaporization associated with impacting comets and …
Year:
2014
Contributor:
Syal, Megan B. (creator)
Schultz, Peter (Director)
Barr, Amy (Reader)
Pieters, Carle (Reader)
Mustard, John (Reader)
Meech, Karen (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
Impact Crater
Vaporization
Asteroid
Comet
Planetary science
Moon
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

In the Common Interest: Water Policy and Reform in Australia’s Murray-Darling Basin

Description:
Policy and practice in major river systems of the world continue to degrade ecosystems and undermine sustainable use. Freshwater resources are multi-valued, and transboundary river …
Year:
2018
Contributor:
Bischoff-Mattson, Zachary (creator)
Lynch, Amanda (Advisor)
Fox-Kemper, Baylor (Reader)
Hastings, Meredith (Reader)
Mustard, John (Reader)
Steelman, Toddi (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Environmental policy
Water
Policy sciences
Adaptive governance
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Influence of Compositional Structure on Planetary Geological Evolution

Description:
Why are the planets of our Solar System so different, geologically? Volcanic, tectonic, and magnetic processes are responsible for many important features of the Earth, …
Year:
2024
Contributor:
Lark, Laura (creator)
Huber, Christian (Advisor)
Head, James (Advisor)
Parmentier, Edgar Marc (Reader)
Parman, Stephen (Reader)
Tosi, Nicola (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Mars (Planet)
Geodynamics
Planetary science
Mercury (Planet)
Planets--Geology
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Infrared Reflectance Spectroscopy of Meteorites, Analogs, and Returned Samples: Advances in Context, Connections, and Characterization

Description:
Asteroids and their meteoritic counterparts are the most accessible, yet most enigmatic solar system materials available for study. Their chemistry and mineralogy provide clues to …
Year:
2024
Contributor:
Schultz, Cody Davis (creator)
Milliken, Ralph (Advisor)
Mustard, John (Reader)
Budde, Gerrit (Reader)
Birch, Samuel (Reader)
Zolensky, Michael (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Asteroids
Carbonaceous chondrites (Meteorites)
Planetary science
Meteorites
Reflectance spectroscopy
Aguas Zarcas
Bennu (Asteroid)
OSIRIS-REx
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Insights from Impacts: Three-Dimensional Structure and Composition of the Lunar Crust

Description:
The three-dimensional distribution of materials within the lunar crust is a source of information about the thermal and structural history of the Moon. Patterns observed …
Year:
2026
Contributor:
Levin, Janette Naomi (creator)
Evans, Alexander (Advisor)
Daubar, Ingrid (Reader)
Fox-Kemper, Baylor (Reader)
Lau, Harriet (Reader)
Zhong, Shijie (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Impact craters
Geophysics
Moon
Planetary science
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Available to Brown-affiliated users only
Full Record

Integrated Mineralogy and High Resolution Geologic Context of Lunar Impact Melt Deposits: Implications for Crustal Diversity and the Impact Cratering Process

Description:
This work is perhaps the first major study integrating mineralogical and morphological properties of lunar impact melt deposits using the new generation remote sensing data. …
Year:
2015
Contributor:
Dhingra, Deepak (creator)
Pieters, Carle (Director)
Head, James (Reader)
Mustard, John (Reader)
Liang, Yan (Reader)
Parman, Stephen (Reader)
Tompkins, Stefanie (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
Impact cratering
Geology
Mineralogy
Remote sensing
Moon
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Integrated Spectroscopy of Mg-Fe-Ca Pyroxenes: A Foundation for Modern Remote Compositional Analysis of Planetary Surfaces

Description:
Detailed textural, mineralogical and chemical analyses of extraterrestrial materials have raised numerous questions about the igneous evolution and cooling histories of their parent bodies. Remote …
Year:
2008
Contributor:
Klima, Rachel L. (creator)
Pieters, Carle (director)
Mustard, John (reader)
Hess, Paul (reader)
Liang, Yan (reader)
Dyar, Melinda (reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
spectroscopy
Spectrum analysis
Pyroxene
Remote sensing
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Interaction between the Andes and the Climate System, and Wave Studies

Description:
We used global climate models to study the interaction between the Andes and the climate system. We found that the errors in the tropical Pacific …
Year:
2023
Contributor:
Xu, Weixuan (creator)
Lee, Jung-Eun (Advisor)
Fox-Kemper, Baylor (Advisor)
Marston, Brad (Reader)
Tsai, Victor (Reader)
McPhaden, Michael (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Climate modeling
Pacific Ocean--El Niño Current
Ocean-atmosphere interaction
Atmospheric circulation
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Interaction of Sea Surface Ice Floes in Fluid Dynamical Eddy Simulations

Description:
The thermohaline instabilities imposed by sea ice floes on the surface ocean create submesoscale eddies which are poorly modelled in modern oceanographic or atmospheric models. …
Year:
2019
Contributor:
Clay, Jacinta (creator)
Fox-Kemper, Baylor (thesis advisor)
Lee, Jung-Eun (reader)
Lynch, Amanda (reader)
Brown University. Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Sea ice
Models and modelmaking
Eddies--Mathematical models
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Investigating the Potential for Alteration in a Cold and Icy Martian Background Climate

Description:
The state of the climate during the Late Noachian/Early Hesperian has been a longstanding question in Mars research. The abundant fluvial features and alteration minerals …
Year:
2022
Contributor:
Kaufman, Sierra Vivian (creator)
Maher, Kate Maher (Reader)
Mustard, Jack (Advisor)
Liang, Yan (Reader)
Huber, Chris (Reader)
Parman, Stephen (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Geochemistry
Mars (Planet)
Planetary science
Reactive transport modeling
Climate
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Investigating the role of atmospheric nitrogen deposition and biogeochemical changes in cryospheric environments

Description:
Reactive nitrogen gases (e.g., NOx = NO + NO2) emitted to the atmosphere eventually return to the surface environment as nitrate (NO3-) deposition, which causes …
Year:
2020
Contributor:
Clark, Sydney C (creator)
Hastings, Meredith (Advisor)
Russell, James (Reader)
Fischer, Karen (Reader)
Prell, Warren (Reader)
Baron, Jill (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Atmospheric chemistry and biogeochemistry
Stable isotopes
Nitrogen cycle
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Joint Seismic Constraints on the Structure and Evolution of the Continental Lithosphere

Description:
The lithosphere preserves a record of tectonic evolution in its seismic velocity structure, reflecting variations in temperature, composition, and physical state. However, individual seismic observations …
Year:
2026
Contributor:
Huang, Yiran (creator)
Dalton, Colleen (Advisor)
Fischer, Karen (Reader)
Saal, Alberto (Reader)
Hirth, Greg (Reader)
Shen, Weisen (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Geology
Geophysics
Seismology
Bayesian Inversion
Lithosphere
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Kinetics of Partial Melting and Melt-Rock Reaction in the Earth's Mantle

Description:
Partial melting of the mantle occurs predominantly in the spinel lherzolite stability field, where pyroxenes are consumed to produce olivine and basaltic melt. The phase …
Year:
2008
Contributor:
Lo Cascio, Mauro (creator)
Liang, Yan (director)
Hess, Paul (reader)
Parmentier, Edgard (reader)
Saal, Alberto (reader)
Shimizu, Nobumichi (reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
melt-rock reaction
igneous petrology
dissolution
trace element fractionation
Diffusion
Igneous rocks
Basalt
Peridotite
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Land Use Change Across the Brazilian Cerrado, 2001-2013

Description:
Over the past four decades, the Cerrado region of Brazil has transitioned from a land of sparsely inhabited forests and shrublands to an industrial agriculture …
Year:
2017
Contributor:
Spera, Stephanie Anne (creator)
Mustard, Johnathon (Director)
VanWey, Leah (Director)
Lynch, Amanda (Reader)
Hirth, James (Reader)
Assuncao, Juliano (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
remote sensing
cerrado
brazil
land-use change
food security
climate change
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Langmuir Turbulence and Its Effects on Global Climate

Description:
Ocean surface gravity waves, especially the resulting Langmuir turbulence, affect the ocean surface vertical mixing, yet are missing in most of the global climate models …
Year:
2018
Contributor:
Li, Qing (creator)
Fox-Kemper, Baylor (Advisor)
Russell, James (Reader)
Parmentier, Edgar (Reader)
Marston, John (Reader)
Lynch, Amanda (Reader)
Hara, Tetsu (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Oceanography
Oceanic mixing
Climate modeling
Surface waves (Oceanography)
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Late Pleistocene Orbital-Scale Indian Summer Monsoon Hydroclimates Reconstructed Using Leaf Wax Hydrogen and Carbon Isotopes from the Northeast Indian Margin and Andaman Sea

Description:
The Indian Summer Monsoon (ISM) is vital to over one-fifths of the world’s population who depend upon monsoonal rains. Recently collected marine sediment cores offer …
Year:
2022
Contributor:
McGrath, Sarah Madeline (creator)
Clemens, Steven (Advisor)
Huang, Yongsong (Advisor)
Anand, Pallavi (Reader)
Dalton, Colleen (Reader)
Russell, James (Reader)
Herbert, Timothy (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Paleoclimatology
hydrogen isotopes
Monsoons
Pleistocene Geologic Epoch
Carbon--Isotopes
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Linking Late Miocene-Pliocene sea surface temperatures, terrestrial biome transitions and intensification of glaciation using alkenone paleothermometry

Description:
This work presents novel Miocene – Pliocene (13 - 2.6 Ma) sea surface temperatures (SST) from the Mediterranean Sea, North Atlantic, South Atlantic and North …
Year:
2015
Contributor:
Tzanova, Alexandrina (creator)
Herbert, Timothy (Director)
Clemens, Steven (Reader)
Hastings, Meredith (Reader)
Tullis, Jan (Reader)
Wright, James (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
paleoclimate
alkenones
sea surface temperatures
Miocene
Pliocene
Paleoclimatology
Miocene Geologic Epoch
Pliocene Geologic Epoch
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Lipid biomarkers globally reveal synchronous Plio-Pleistocene global cooling: Revising the ODP Site 1090 sea surface temperature record

Description:
The Pliocene epoch (5.33-2.58 million years ago, Ma) has relevance to understanding Earth’s modern climate, as it is the most recent time in Earth’s history …
Year:
2024
Contributor:
Hoegler, Brianna (creator)
Herbert, Timothy (Advisor)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Paleoclimatology
Paleoceanography
Marine sediments
Pliocene-Pleistocene boundary
Global temperature changes
Pliocene Geologic Epoch
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Available to Brown-affiliated users only
Full Record

Lithospheric and Asthenospheric Seismic Anisotropy at Collisional and Passive Margins

Description:
Seismic anisotropy in olivine and orthopyroxene mineral crystals enables us to infer first-order flow characteristics in the asthenospheric mantle and the preserved tectonic history in …
Year:
2014
Contributor:
MacDougall, Julia (creator)
Fischer, Karen (Director)
Forsyth, Donald (Reader)
Parman, Stephen (Reader)
Parmentier, Edgar (Reader)
Kincaid, Chris (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
Seismic anisotropy
passive margins
Subduction zones
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Items (81-100) out of 175 results