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Items (41-60) out of 175 results

Early Mars Environments Revealed Through Near-Infrared Spectroscopy of Alteration Minerals

Description:
While unstable on present-day Mars, liquid water was an important geologic agent in Mars' past. This work investigates the nature and timing of aqueous processes …
Year:
2010
Contributor:
Ehlmann, Bethany (creator)
Mustard, John (Director)
Head, James (Reader)
Hirth, Greg (Reader)
Soderblom, Laurence (Reader)
Wyatt, Michael (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
Mars
hydrothermal
Infrared spectroscopy
Weathering
Phyllosilicates
Carbonates
Mars (Planet)
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Early Mars Landform Evolution: Understanding Geologic Change and Climate History Through Observation and Modeling of Surface Processes

Description:
The nature of the early Mars climate is currently debated. Geologic evidence from valley networks and crater basin paleolakes suggests that early Mars (the Noachian …
Year:
2022
Contributor:
Boatwright, Benjamin D. (creator)
Head, James (Advisor)
Fastook, James (Reader)
Huber, Christian (Reader)
Pieters, Carle (Reader)
Russell, James (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Mars (Planet)
Glacial landforms
Hydrology
Planetary science
Planets--Surfaces
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Ejecta Evolution and Dynamics from Hypervelocity Impacts: Time-Resolved Experimental Studies and Applications to Planetary Cratering

Description:
The ejection of mass during an impact event is a shock-driven process that shapes the distribution of materials on planetary surfaces. Ejection velocities dictate the …
Year:
2011
Contributor:
Hermalyn, Brendan (creator)
Schultz, Peter (Director)
Forsyth, Donald (Reader)
Mustard, John (Reader)
Parmentier, Edgar (Reader)
Crawford, David (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
impact cratering
ejecta velocity
oblique impacts
hypervelocity impacts
Particle tracking velocimetry
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Elevated PM2.5 Concentrations from a Wood-Burning Community Event in Providence, RI

Description:
WaterFire is a recurring community and arts event in Providence, RI that involves igniting small bonfires along the Providence River. Increases in fine particulate matter …
Year:
2025
Contributor:
Kwarko, Kendall T. (creator)
Hastings, Meredith (thesis advisor)
Herbert, Timothy (reader)
Fischer, Karen (reader)
Brown University. Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Environmental justice
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Breathe Providence Digital Collection
Full Record

Epic Failure: A Study of Subsurface Damage Following Oblique Hypervelocity Impacts

Description:
Impact cratering is a ubiquitous process affecting planetary surfaces in the solar system. The most probable impact angle is 45°, and ¼ of all impacts …
Year:
2012
Contributor:
Stickle, Angela M (creator)
Schultz, Peter (Director)
Barr, Amy (Reader)
Fischer, Karen (Reader)
Hirth, Greg (Reader)
Spray, John (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
Impact Cratering
Damage
Ames Vertical Gun Range
CTH
Planetary science
Chalmers tekniska högskola
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Estimating the local amplification of Rayleigh waves with regional broadband seismic arrays

Description:
Because of the different characteristics of seismic velocity and density sensitivity kernels for Rayleigh wave amplification and phase velocity, combining observations of surface-wave amplification with …
Year:
2023
Contributor:
Huang, Yiran (creator)
Dalton, Colleen (Advisor)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Seismology
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Estimating the Water Content of Geologic Materials Using Near-Infrared Reflectance Spectroscopy: Applications to Laboratory and Spacecraft Data

Description:
The goal of this work was to provide a foundation for quantitative assessment of H2O abundance of terrestrial and extraterrestrial geologic materials using visible-near infrared …
Year:
2006
Contributor:
Milliken, Ralph Edward (Author)
Mustard, John F. (Advisor)
Pieters, Carle (Reader)
Head, James (Reader)
Forsyth, Donald W. (Reader)
Bish, David L. (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Near-Infrared Reflectance Spectroscopy
Infrared spectroscopy
Planetary science
Mineralogy
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Evaluating the Hydrology of a Cold and Icy Early Mars

Description:
A primary motivation for the exploration of planetary bodies is to determine if, where, and when life may have existed beyond Earth, and the nature …
Year:
2019
Contributor:
Cassanelli, James (creator)
Head, James (Advisor)
Rutherford, Malcolm (Reader)
Russell, James (Reader)
Parmentier, Edgar (Reader)
Fastook, James (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Geology
Mars (Planet)
Geophysics
Hydrology
Volcanism
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Evidence of late Pleistocene and Holocene Centennial-Scale Drought from Southeastern Massachusetts

Description:
Past hydroclimatic change is shown from the reconstruction of paleo-lake levels from New Long and Rocky Ponds in southeastern Massachusetts, and Davis Pond in western …
Year:
2010
Contributor:
Newby, Paige E (creator)
Donnelly, Jeffrey (Director)
Herbert, Timothy (Director)
Tullis, Jan (Reader)
Russell, James (Reader)
Anderson, Douglas (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
lake levels
Holocene
late Pleistocene
North Atlantic
Paleohydrology
Holocene Geologic Period
New England
North Atlantic Region
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Experimental and Field Constrains on the Physicochemical Evolution of the Lunar and Terrestrial Mantles

Description:
Abstract of Experimental and Field Constraints on the Physicochemical Evolution of the Lunar and Terrestrial Mantles, by Nicholas Dygert, PhD., Brown University, May 2015. This …
Year:
2015
Contributor:
Dygert, Nicholas James (creator)
Liang, Yan (Director)
Hirth, James (Director)
Parman, Stephen (Reader)
Parmentier, Edgar (Reader)
Kelemen, Peter (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
armalcolite
HFSE
REE
Fe-rich pyroxene
lattice strain
Trinity Ophiolite
Josephine Ophiolite
Mariana Trench
TREE
REE-in-two-pyroxene
geothermometry
tectonics
Ilmenite
Hedenbergite
Trinity
Ophiolites
Plate tectonics
North Pacific Ocean--Mariana Trench
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Experimental Constraints on the geochemical processing planetary interiors: Noble gases and spinel spectroscopy

Description:
The first three chapters of this thesis are focused on experimental determinations of noble gas solubility in a variety of materials relevant to partial melting …
Year:
2015
Contributor:
Jackson, Colin (creator)
Parman, Stephen (Director)
Cooper, Reid (Reader)
Saal, Alberto (Reader)
Mukhopadhyay, Sujoy (Reader)
Parmentier, Marc (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
noble gases
Gases, Rare
Geochemistry
Spinel
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Experimental investigations into shergottite formation

Description:
This thesis studies the shergottite family of martian meteorites using a variety of experiments performed on natural and synthetic samples. The study determines the crystallization …
Year:
2008
Contributor:
Calvin, Christina (creator)
Rutherford, Malcolm (director)
Hess, Paul (reader)
Wyatt, Michael (reader)
Gromet, L (reader)
Longhi, John (reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
shergottite
Mars
liquid line of descent
Lherzolite
Meteorites
Phosphates
Mars (Planet)
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Exploring Complexities in the Earth’s Upper Mantle and Connecting Approaches to Inclusivity in the Earth Sciences

Description:
This PhD thesis presents a comprehensive exploration of Earth’s upper mantle from global and regional perspectives, with a particular emphasis on the stable cores of …
Year:
2023
Contributor:
Krueger, Hannah Elaine (creator)
Fischer, Karen (Advisor)
Dalton, Colleen (Reader)
Saal, Alberto (Reader)
Lau, Harriet (Reader)
Russell, Josh (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Antarctica
mantle metasomatism
Seismology
Upper Mantle
Lithosphere
Inclusivity
Cratons
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

EXPLORING THE INTERACTION BETWEEN CLIMATE, HYDROLOGY, AND IMPACT CRATERING ON MARS

Description:
The nature of the early martian climate, hydrological cycle, and their relationship to the impact cratering process has remained enigmatic, but are critically important in …
Year:
2017
Contributor:
Weiss, David Kutai (creator)
Head, James (Advisor)
Parmentier, Marc (Reader)
Pieters, Carle (Reader)
Lee, Jung-Eun (Reader)
Garvin, James (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Geology
Meteorite craters
Mars (Planet)
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Fatigue, Fracture, and Flow: Modeling the Geologic Resurfacing of Icy Satellites

Description:
Geodynamic models are developed to understand the geologic evolution of icy satellites and Kuiper belt objects. The key scientific questions addressed by this thesis are: …
Year:
2017
Contributor:
Hammond, Noah Patrick (creator)
Parmentier, Marc (Advisor)
Hirth, Greg (Advisor)
Cooper, Reid (Reader)
Schultz, Pete (Reader)
Collins, Geoff (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Satellites
Geodynamics
Heat--Convection--Mathematical models
Pluto (Dwarf planet)
Jupiter (Planet)--Ganymede (Satellite)
Uranus (Planet)--Miranda (Satellite)
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Filling in the Gaps: Paleosols as Regional Recorders of Hydroclimatic Change in Northeast China at the Cretaceous – Paleogene

Description:
The Songliao Basin in Northeast China contains one of the most complete terrestrial sedimentary records of the Cretaceous and represents an important terrestrial paleoclimate archive. …
Year:
2024
Contributor:
Bobik, Theodore (creator)
Ibarra, Daniel (Advisor)
Russell, James (Reader)
Saal, Alberto (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Geochemistry
Paleoclimatology
Stable isotopes
Cretaceous-Paleogene boundary
Paleopedology
Clumped isotopes
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Fine Particulate Matter in Providence: Siting, Calibration, and Analysis of the Breathe Providence Hyperlocal Air Monitoring Network

Description:
In Providence, Rhode Island, communities of color and neighborhoods with high asthma rates are not well-represented by the coarse spatial resolution of current government-operated monitoring. …
Year:
2023
Contributor:
Fay, Meg (creator)
Hastings, Meredith (thesis advisor)
Teichert, Kurt (thesis advisor)
Hastings, Meredith (reader)
Walters, Wendell (reader)
Brown University. Institute at Brown University for Environment and Society (IBES) (sponsor)
Genre:
theses
Subject:
Environmental justice
Hyperlocal Air Quality Monitoring
Breathe Providence
Community Engagement,
Particulate Matter (PM2.5)
ArcGIS
Air Quality Vulnerability Index
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Institute at Brown for Environment & Society
Breathe Providence Digital Collection
Full Record

Floods, Droughts, and Tropical Cyclones: Investigating Climate Extremes through Variations in Lacustrine Sedimentology

Description:
Recent climate extremes, including floods, droughts, and hurricanes, have had devastating effects worldwide, driving new research aimed at developing better prediction of such events. Understanding …
Year:
2014
Contributor:
Rodysill, Jessica Rose (creator)
Russell, James (Director)
Donnelly, Jeffrey (Director)
Herbert, Timothy (Reader)
Prell, Warren (Reader)
Tullis, Jan (Reader)
Rodbell, Donald (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
Climate
Climatology
Lakes
Sedimentology
Floods
Droughts
Hurricanes
Language:
English
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Forcings of Indo-Pacific Warm Pool Climate During the Past One Million Years

Description:
The past one million years encompasses major changes in the Earth’s glacial-interglacial cycles, with a shift from 41- to 100-kyr during the Mid-Pleistocene Transition (MPT) …
Year:
2024
Contributor:
Parish, Meredith Claire (creator)
Russell, James (Advisor)
Clemens, Steven (Reader)
Herbert, Timothy (Reader)
Dalton, Colleen (Reader)
Konecky, Bronwen (Reader)
Brown University. Department of Earth, Environmental, and Planetary Sciences (sponsor)
Genre:
theses
Subject:
Paleoclimatology
Hydroclimate
organic biomarkers
Alkanes
gdgts
Indo-Pacific Warm Pool
Maritime Continent
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Forest nutrient cycling and remote sensing of land cover in Miombo Woodlands: Insights for biogeochemistry and environmental monitoring of African tropical dry forest landscapes

Description:
Tropical dry forests are an extensive biome that supports biodiversity, food, water and energy resources for millions of people. Among global tropical dry forests, the …
Year:
2017
Contributor:
Mayes, Marc T (creator)
Mustard, John (Director)
Melillo, Jerry (Director)
Neill, Christopher (Reader)
Lee, Jung-Eun (Reader)
Milliken, Ralph (Reader)
Estes, Lyndon (Reader)
Brown University. Geological Sciences (sponsor)
Genre:
theses
Subject:
Africa
Miombo Woodlands
terrestrial biogeochemistry
remote sensing
carbon
nitrogen
nutrient cycling
sustainable development
Collection:
Earth, Environmental and Planetary Sciences
Theses and Dissertations
Full Record

Items (41-60) out of 175 results