Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2015

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 2821 - 2850 of 39182

Full-Text Articles in Entire DC Network

Geometric Aspects Of Quantum Hall States, Andrey Gromov Dec 2015

Geometric Aspects Of Quantum Hall States, Andrey Gromov

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Explanation of the quantization of the Hall conductance at low temperatures in strong magnetic field is one of the greatest accomplishments of theoretical physics of the end of the 20th century. Since the publication of the Laughlin's charge pumping argument condensed matter theorists have come a long way to topological insulators, classification of noninteracting (and sometimes interacting) topological phases of matter, non-abelian statistics, Majorana zero modes in topological superconductors and topological quantum computation - the framework for ``error-free'' quantum computation. While topology was very important in these developments, geometry has largely been neglected. We explore the role of space-time symmetries …

Go to article

Exploring The Space Of Superconformal Field Theories, Madalena Duarte De Almeida Lemos Dec 2015

Exploring The Space Of Superconformal Field Theories, Madalena Duarte De Almeida Lemos

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

This dissertation focuses on the study of superconformal field theories (SCFTs) through the so-called (super)conformal bootstrap program. The goals of this program are twofold: to chart the space of allowed SCFTs and to solve specific theories. The hope is that symmetries and a few simple physical assumptions, combined with basic consistency requirements (crossing symmetry and unitarity) are powerful enough to completely “solve†these theories. In doing so we never have to provide a Lagrangian description for the theories in question, and thus we can employ the bootstrap in studying SCFTs for which no such description is known. This is the …

Go to article

Measurement Of The Inclusive Charged Current Electron Neutrino Interaction Rate On Water With The T2k Pi-Zero Detector, Jay Hyun Jo Dec 2015

Measurement Of The Inclusive Charged Current Electron Neutrino Interaction Rate On Water With The T2k Pi-Zero Detector, Jay Hyun Jo

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The T2K (Tokai to Kamioka) experiment is a long-baseline neutrino experiment designed to measure numu disappearance and nue appearance from the numu beam. The T2K experimental setup consists of J-PARC (Japan Proton Accelerator Research Complex) accelerator, a near detector (ND280) and a far detector (Super-Kamiokande). With the recent firm establishment of nue appearance by T2K, future precision nue appearance measurements can be used to explore CP-violation in neutrino interactions. However such an exploration requires detailed understanding of the nue interactions, as well as contamination of nue in the numu beam. The presence of the nue component in the beam accounts …

Go to article

Exact Results In Supersymmetric And Superconformal Quantum Field Theories, Wolfger Peelaers Dec 2015

Exact Results In Supersymmetric And Superconformal Quantum Field Theories, Wolfger Peelaers

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In this dissertation we perform exact, non-perturbative computations in supersymmetric and superconformal quantum field theories. In the first part, we show that the conformal bootstrap equations, which implement the requirement that in a conformal quantum field theory any four-point function should be crossing symmetric, have an exactly solvable truncation in theories with extended supersymmetry. As a result, we introduce a new 4d/2d correspondence that assigns to any four-dimensional N =2 superconformal quantum field theory, Lagrangian or non-Lagrangian, a two-dimensional chiral algebra, and subsequently explore its structure in the context of theories of class S. In the second part, we extend …

Go to article

Resurgence And The Large N Expansion, Ricardo Vaz Dec 2015

Resurgence And The Large N Expansion, Ricardo Vaz

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In this dissertation we focus on recent developments in the study of resurgence and the large N expansion. It is a well known fact that perturbative expansions, such as the large N expansion, are divergent asymptotic series. This is a signal that there are non- perturbative effects of the form exp(-N) that also need to be considered, and our original perturbative series should be upgraded to one including powers of both 1/N and exp(-N), which is called a transseries. The machinery needed to tackle transseries was developed in the 1980s under the formalism of so-called resurgence. Using its tools we …

Go to article

Transverse Momentum Distribution For Drell Yan Process, Yikun Wang Dec 2015

Transverse Momentum Distribution For Drell Yan Process, Yikun Wang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The Drell-Yan process is the production of massive lepton pairs in hadronic collisions. In this thesis, we investigate the transverse momentum distribution of the intermediate vector bosons for the Drell-Yan process. This distribution can be predicted by perturbative QCD. However, one difficulty of the calculation is large logarithms that occur in the calculation of the differential cross section which come from the soft and collinear structure of the phase space. The large logarithmic terms in the differential cross section spoil the validity of perturbative expansion in the region of small transverse momentum. Transverse momentum resummation can give convergent results and …

Go to article

Qcd Factorization And Effective Field Theories At The Lhc, Mao Zeng Dec 2015

Qcd Factorization And Effective Field Theories At The Lhc, Mao Zeng

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Quantum Chromodynamics (QCD) is the main tool for making precise theoretical predictions for proton-proton collisions at the large hadron collider (LHC). A key lesson from QCD is that physics looks different at different energy scales, under renormalization group evolution. The simplest example is the running coupling, but more examples come from QCD factorization of hadron scattering and effective field theories. A hard scattering event in hadron collisions involves two widely separated scales: the hadron mass scale and the hard momentum transfer scale. The parton distribution functions, describing a light-cone view of the internal structure of a proton, are evolved from …

Go to article

Fractional Time Series Applications In Political Science, Taylor Grant Dec 2015

Fractional Time Series Applications In Political Science, Taylor Grant

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

This dissertation is focused on the estimation of time series models with the main area of interest being the use of fractional methods in political science. Since the work of Granger (1980), Granger and Joyeux (1980) and Hosking (1981) initially introduced the concept of fractional integration the area of study has continued to grow in economics. In political science however, research into fractional integration has failed to advance beyond an initial flurry of study that began in the late 1990s and early 2000s. This dissertation contains three stand alone chapters that are focused on the use of fractional methods with …

Go to article

Fight Or Flight: Mobility, Political Behavior, And Nativism In The United States, Yamil Velez Dec 2015

Fight Or Flight: Mobility, Political Behavior, And Nativism In The United States, Yamil Velez

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In recent decades, communities across the United States have seen increases in hostility toward immigrants. Prevailing theories in political science hold that responses to immigration are, in part, a function of local area demographics. However, assessments of these theories suffer from the critique that local area demographics and immigration preferences may be endogenous due to residential self-selection. Recent efforts sidestep this problem by using clever modeling strategies or experiments. Rather than viewing self-selection as a nuisance, however, this article develops and tests a theory that treats migration and political behavior as strategies residents invoke in the presence of local immigration. …

Go to article

Lost And Found: Transgender Elders’ Journey Toward Authenticity. A Constructionist Grounded Theory Study | Lost And Found: Transgender Elders’ Journey Toward Authenticity. A Constructionist Grounded Theory Study, Donna Barbara Riley Dec 2015

Lost And Found: Transgender Elders’ Journey Toward Authenticity. A Constructionist Grounded Theory Study | Lost And Found: Transgender Elders’ Journey Toward Authenticity. A Constructionist Grounded Theory Study, Donna Barbara Riley

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

While theoretical models of transgender identity development exist, theoretical models of post-transition social identity development are limited, and theoretical models of transgender individuals transitioning in later life are absent. As such, the purpose of this study is to explore the experience of transgender individuals coming out later in life, often after decades of hiding. Their experiences give voice to the trans community to define self-fulfillment as a transgender person post-transition. Additionally, this study explores the obstacles transgender elders navigate in middle and later life. Using a semi-structured interview guide with 42 transgender elders 55 years and older, respondents constructed chronological …

Go to article

Marine Acoustics And Habitat Mapping In The Peconic Estuary, Ny, Michael Patrick White Dec 2015

Marine Acoustics And Habitat Mapping In The Peconic Estuary, Ny, Michael Patrick White

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

As coastal populations grow, there is an increasing need for better spatial management of the seafloor. Multibeam backscatter data can be a powerful tool for habitat mapping and segmenting large areas of the seabed, based on similar physical characteristics. In order to increase the effectiveness of backscatter data sets, MBES data from the Peconic Estuary, NY, is reprocessed using newly developed software. These mosaics are less noisy compared to prior results. The relationship between grain size and backscatter is found to have a good correlation in the Peconic Estuary and a simple regression is used to predict mean phi size …

Go to article

Observation Of Ferroelastic Toughening In Ceramic Oxides By Polarized Raman Spectroscopy, Amanda Brooke Schubert Dec 2015

Observation Of Ferroelastic Toughening In Ceramic Oxides By Polarized Raman Spectroscopy, Amanda Brooke Schubert

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The lifetime and efficiency of turbine engines for applications such as aerospace and power generation rely on the use of thermal barrier coatings (TBC). The TBC provides a thermal barrier between the metallic turbine engine components and the high temperature gas produced by the turbines combustion. They prevent oxidation as well as thermo-mechanical damage of the underlying metallic components. 7-8 weight-% yttria stabilized zirconia (7-8YSZ) is the industry standard material for thermal barrier coatings due to its high melting temperature, high toughness, low thermal conductivity, and high coefficient of thermal expansion which similar to that of the underlying metallic engine …

Go to article

A Dynamic Oyster Reef Bioenergetics Model: Predictions Of Secondary Production Based On Different Restoration Scenarios, Elizabeth Gomez Dec 2015

A Dynamic Oyster Reef Bioenergetics Model: Predictions Of Secondary Production Based On Different Restoration Scenarios, Elizabeth Gomez

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The presence of oyster reefs augments the biomass and abundance of many transient fish and crustacean species. Therefore, restoration of oyster reefs has become an increasingly common practice in coastal areas with the goal of enhancing production of transient fish. However, predicting the effect of oyster restoration on transient fish community biomass remains elusive. To address this challenge, I created a trophic bioenergetic model to understand how energy transfers in an oyster reef and assess the effects of various restoration strategies on transient fish species. The model used a set of functional groups representing organisms commonly found in an oyster …

Go to article

Denitrifying Bioreactors: A Solution To Groundwater Nitrate Pollution At The Forge River?, Christine Jean Gurdon Dec 2015

Denitrifying Bioreactors: A Solution To Groundwater Nitrate Pollution At The Forge River?, Christine Jean Gurdon

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Denitrifying bioreactors are an approach to remediate groundwater contaminated with nitrate. Their popularity as a remediation system has increased due to their unnecessary maintenance, low cost, and longevity. While field trials on their performance have been conducted, few have been completed in a marine coastal environment. In this study, a denitrification wall was designed to be installed and monitored along the shore of a coastal environment, namely, the Forge River, New York. Prior to the design phase, a groundwater plume of elevated nitrate-nitrite concentrations needed to be identified. Groundwater nitrate-nitrite concentrations ranged from 0.01-17.68 mg/L along Riviera Drive, a road …

Go to article

The Application Of Trajectory Analysis For An Early Warning System In Stem Courses, Un Jung Lee Dec 2015

The Application Of Trajectory Analysis For An Early Warning System In Stem Courses, Un Jung Lee

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The retention of STEM (science, technology, engineering, and mathematics) majors has become a national concern. “Early warning systems†(EWS) are being developed to identify students who perform poorly early in the semester so that interventions can be implemented. The research reported here utilizes clicker scores and review quiz scores collected in every class session for the longitudinal analysis, as well as pre-course concept inventory scores and self-reported student characteristics. Pre course concept inventory scores were significantly predictive of final course grade. Student demographic characteristics had a smaller fraction of final course grade explained. The cumulative average student clicker score was …

Go to article

Groundwater Nitrate Contamination Remediation Through Permeable Reactive Barriers On The Forge River, Long Island, New York, Amy Bronwan Pritt Dec 2015

Groundwater Nitrate Contamination Remediation Through Permeable Reactive Barriers On The Forge River, Long Island, New York, Amy Bronwan Pritt

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The Forge River on the south shore of Long Island is contaminated by nitrate. The Forge River leads into Moriches Bay. Nitrate contamination in the river leads to algal blooms, hypoxia of the river and eventually fish kills. The area surrounding the Forge River is largely residential and not sewered with the residents relying on septic systems for sewage disposal. Nitrate from even small septic systems has been found in groundwater as far as 100m down gradient. Other investigators have shown the occurrence of submarine groundwater discharge on Wills Creek, a tributary of the Forge River and my study site. …

Go to article

An Ensemble Three-Dimensional Constrained Variational Analysis Method To Derive Large-Scale Forcing Data For Single-Column Models, Shuaiqi Tang Dec 2015

An Ensemble Three-Dimensional Constrained Variational Analysis Method To Derive Large-Scale Forcing Data For Single-Column Models, Shuaiqi Tang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Atmospheric vertical velocities and advective tendencies are essential as large-scale forcing data to drive single-column models (SCM), cloud-resolving models (CRM) and large-eddy simulations (LES). They cannot be directly measured or easily calculated with great accuracy from field measurements. In the Atmospheric Radiation Measurement (ARM) program, a constrained variational algorithm (1DCVA) has been used to derive large-scale forcing data over a sounding network domain with the aid of flux measurements at the surface and top of the atmosphere (TOA). We extend the 1DCVA algorithm into three dimensions (3DCVA) along with other improvements to calculate gridded large-scale forcing data. We also introduce …

Go to article

Enso Modulation Of The Qbo, And Qbo Influence On Tropical Convection, Wei Yuan Dec 2015

Enso Modulation Of The Qbo, And Qbo Influence On Tropical Convection, Wei Yuan

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

We look into the ENSO modulation of QBO amplitudes and periods using IGRA data, for the time from the 1950s to the 2010s (the whole period), and the separated time intervals before 1982 and after 1990. For the whole period and the time interval after 1990, the QBO has longer period and larger amplitude during La Niña than during El Niño. However, before 1982 there is no conclusive relationship between the QBO amplitude for the two ENSO phases, although the QBO period is still longer during La Niña. Since the period of the QBO is determined by the magnitude of …

Go to article

Marine Acoustics And Habitat Mapping In The Peconic Estuary, Ny, Michael Patrick White Dec 2015

Marine Acoustics And Habitat Mapping In The Peconic Estuary, Ny, Michael Patrick White

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

As coastal populations grow, there is an increasing need for better spatial management of the seafloor. Multibeam backscatter data can be a powerful tool for habitat mapping and segmenting large areas of the seabed, based on similar physical characteristics. In order to increase the effectiveness of backscatter data sets, MBES data from the Peconic Estuary, NY, is reprocessed using newly developed software. These mosaics are less noisy compared to prior results. The relationship between grain size and backscatter is found to have a good correlation in the Peconic Estuary and a simple regression is used to predict mean phi size …

Go to article

Observation Of Ferroelastic Toughening In Ceramic Oxides By Polarized Raman Spectroscopy, Amanda Brooke Schubert Dec 2015

Observation Of Ferroelastic Toughening In Ceramic Oxides By Polarized Raman Spectroscopy, Amanda Brooke Schubert

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The lifetime and efficiency of turbine engines for applications such as aerospace and power generation rely on the use of thermal barrier coatings (TBC). The TBC provides a thermal barrier between the metallic turbine engine components and the high temperature gas produced by the turbines combustion. They prevent oxidation as well as thermo-mechanical damage of the underlying metallic components. 7-8 weight-% yttria stabilized zirconia (7-8YSZ) is the industry standard material for thermal barrier coatings due to its high melting temperature, high toughness, low thermal conductivity, and high coefficient of thermal expansion which similar to that of the underlying metallic engine …

Go to article

Multi-Marker Linkage Disequilibrium Mapping Of Quantitative Trait Loci, Soyoun Lee Dec 2015

Multi-Marker Linkage Disequilibrium Mapping Of Quantitative Trait Loci, Soyoun Lee

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Background: Genome-wide associations have been studied for years to infer relationships between biological traits and their underlying genetic causes, known as quantitative traits loci (QTL), in a process known as QTL mapping. Single nucleotide polymorphisms (SNPs), which are commonly used genetic markers, are usually in linkage disequilibrium (LD) with each other within a small genetic region. Both single- and double-marker-based LD mapping methods have been developed by taking advantage of LD structure. Method: In this thesis, a more general LD mapping framework with an arbitrary number of markers has been developed in order to improve LD mapping and its detection …

Go to article

Exploring Model Error Through Post-Processing And An Ensemble Kalman Filter On Fire Weather Days, Michael Jon Erickson Dec 2015

Exploring Model Error Through Post-Processing And An Ensemble Kalman Filter On Fire Weather Days, Michael Jon Erickson

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The proliferation of coupling atmospheric ensemble data to models in other related fields requires a priori knowledge of atmospheric ensemble biases specific to the desired application. In that spirit, this dissertation focuses on elucidating atmospheric ensemble model bias and error through a variety of different methods specific to fire weather days (FWDs) over the Northeast United States (NEUS). Other than a handful of studies that use models to predict fire indices for single fire seasons (Mölders 2008, Simpson et al. 2014), an extensive exploration of model performance specific to FWDs has not been attempted. Two unique definitions for FWDs are …

Go to article

A Dynamic Oyster Reef Bioenergetics Model: Predictions Of Secondary Production Based On Different Restoration Scenarios, Elizabeth Gomez Dec 2015

A Dynamic Oyster Reef Bioenergetics Model: Predictions Of Secondary Production Based On Different Restoration Scenarios, Elizabeth Gomez

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The presence of oyster reefs augments the biomass and abundance of many transient fish and crustacean species. Therefore, restoration of oyster reefs has become an increasingly common practice in coastal areas with the goal of enhancing production of transient fish. However, predicting the effect of oyster restoration on transient fish community biomass remains elusive. To address this challenge, I created a trophic bioenergetic model to understand how energy transfers in an oyster reef and assess the effects of various restoration strategies on transient fish species. The model used a set of functional groups representing organisms commonly found in an oyster …

Go to article

Denitrifying Bioreactors: A Solution To Groundwater Nitrate Pollution At The Forge River?, Christine Jean Gurdon Dec 2015

Denitrifying Bioreactors: A Solution To Groundwater Nitrate Pollution At The Forge River?, Christine Jean Gurdon

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Denitrifying bioreactors are an approach to remediate groundwater contaminated with nitrate. Their popularity as a remediation system has increased due to their unnecessary maintenance, low cost, and longevity. While field trials on their performance have been conducted, few have been completed in a marine coastal environment. In this study, a denitrification wall was designed to be installed and monitored along the shore of a coastal environment, namely, the Forge River, New York. Prior to the design phase, a groundwater plume of elevated nitrate-nitrite concentrations needed to be identified. Groundwater nitrate-nitrite concentrations ranged from 0.01-17.68 mg/L along Riviera Drive, a road …

Go to article

Groundwater Nitrate Contamination Remediation Through Permeable Reactive Barriers On The Forge River, Long Island, New York, Amy Bronwan Pritt Dec 2015

Groundwater Nitrate Contamination Remediation Through Permeable Reactive Barriers On The Forge River, Long Island, New York, Amy Bronwan Pritt

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The Forge River on the south shore of Long Island is contaminated by nitrate. The Forge River leads into Moriches Bay. Nitrate contamination in the river leads to algal blooms, hypoxia of the river and eventually fish kills. The area surrounding the Forge River is largely residential and not sewered with the residents relying on septic systems for sewage disposal. Nitrate from even small septic systems has been found in groundwater as far as 100m down gradient. Other investigators have shown the occurrence of submarine groundwater discharge on Wills Creek, a tributary of the Forge River and my study site. …

Go to article

An Application Of Regression For Storm Surge Prediction Along The New York/New Jersey Coast In Climate Models, Keith J. Roberts Dec 2015

An Application Of Regression For Storm Surge Prediction Along The New York/New Jersey Coast In Climate Models, Keith J. Roberts

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Storm surge from extratropical cyclones can lead to significant coastal flooding, particularly along coastlines adjacent to wide and shallow continental shelves. In warming global climate simulations, studies have shown systematic regional changes to cyclones, which generate surges. However, there have been no formal studies that link regional cyclone changes to changes in the occurrence and intensity of surges along the densely populated New York/New Jersey coastline. A multi-linear regression (MLR) approach is developed to predict 3-hourly surge during the cool season months (Oct. 1-March 31) using climate model data. At the three stations the approach is applied to (The Battery …

Go to article

Radium Isotopes As Tracers Of Pore Water Dynamics In Two Long Island Salt Marsh Systems, Camilo Salazar Dec 2015

Radium Isotopes As Tracers Of Pore Water Dynamics In Two Long Island Salt Marsh Systems, Camilo Salazar

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

A study of pore water residence time as traced by short-lived radium (Ra) isotopes (224Ra and 223Ra) was conducted on two marsh systems in the south shore of Long Island, New York. Pore water was collected in July (summer) and November-December (winter) of 2013 at depths of 20 cm and 120 cm over three-station transects from the inner marsh to the marsh edge adjacent to a tidal channel. One of the marsh systems is the Wertheim Nationals Wildlife Refuge (NWR), from which two marshes were sampled; Wertheim 1 (W1), a restored marsh, and Wertheim 2 (W2), non-restored. The second marsh …

Go to article

Chemical Aging And Cloud Condensation Nuclei Activity Of Biomass Burning Aerosol Proxies In The Presence Of Oh Radicals, Jonathan Hall Slade Dec 2015

Chemical Aging And Cloud Condensation Nuclei Activity Of Biomass Burning Aerosol Proxies In The Presence Of Oh Radicals, Jonathan Hall Slade

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Biomass burning aerosol (BBA) can adversely impact regional and global air quality and represents a significant source of organic aerosol (OA) to the atmosphere that can affect climate. Aerosol particles can alter the transfer of radiation in earth's atmosphere directly by scattering and absorbing radiation or indirectly via cloud formation. Gas-to-particle, also termed heterogeneous, oxidation reactions can significantly alter the particle's physical and chemical properties. In turn, this can lead to the degradation of biomolecular markers for air quality-related aerosol source apportionment studies, the particles' lifetime, and modify the particles' abilities to serve as cloud condensation nuclei (CCN). However, the …

Go to article

Enso Modulation Of The Qbo, And Qbo Influence On Tropical Convection, Wei Yuan Dec 2015

Enso Modulation Of The Qbo, And Qbo Influence On Tropical Convection, Wei Yuan

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

We look into the ENSO modulation of QBO amplitudes and periods using IGRA data, for the time from the 1950s to the 2010s (the whole period), and the separated time intervals before 1982 and after 1990. For the whole period and the time interval after 1990, the QBO has longer period and larger amplitude during La Niña than during El Niño. However, before 1982 there is no conclusive relationship between the QBO amplitude for the two ENSO phases, although the QBO period is still longer during La Niña. Since the period of the QBO is determined by the magnitude of …

Go to article

Marine Acoustics And Habitat Mapping In The Peconic Estuary, Ny, Michael Patrick White Dec 2015

Marine Acoustics And Habitat Mapping In The Peconic Estuary, Ny, Michael Patrick White

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

As coastal populations grow, there is an increasing need for better spatial management of the seafloor. Multibeam backscatter data can be a powerful tool for habitat mapping and segmenting large areas of the seabed, based on similar physical characteristics. In order to increase the effectiveness of backscatter data sets, MBES data from the Peconic Estuary, NY, is reprocessed using newly developed software. These mosaics are less noisy compared to prior results. The relationship between grain size and backscatter is found to have a good correlation in the Peconic Estuary and a simple regression is used to predict mean phi size …

Go to article

First Prev Next Last