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Oceanography and Atmospheric Sciences and Meteorology Commons™

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2012

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Articles 241 - 270 of 547

Full-Text Articles in Oceanography and Atmospheric Sciences and Meteorology

Population Structure Of Tursiops Truncatus In North Inlet, South Carolina And Use Of Inlet As A Nursery Ground, Heather Estep May 2012

Population Structure Of Tursiops Truncatus In North Inlet, South Carolina And Use Of Inlet As A Nursery Ground, Heather Estep

Honors Theses

Abundance, distribution and movement patterns of bottlenose dolphin populations are becoming more frequently studied along the Atlantic Coast from Virginia to Florida. One aspect of dolphin populations that has not been a focus of study is the use of nursery grounds by females with calves. Nursery grounds for bottlenose dolphin populations have been identified in Sarasota Bay, Florida and near Beaufort, North Carolina. This study analyzed data collected from September 1997 to June 2006 on focal follows and photo identification to determine if females were utilizing North Inlet, South Carolina as a nursery ground. There was no significant difference in …

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Countries' Involvement In Whaling And The Impacts On Their Tourism Industries, Kaitlyn Hofeldt May 2012

Countries' Involvement In Whaling And The Impacts On Their Tourism Industries, Kaitlyn Hofeldt

Honors Theses

Since the expansion of whale watching as an industry, many countries have converted from whaling as a source of revenue. There are still some countries that partake in whaling and also conduct whale watching tours. The belief is that these two industries cannot coexist in a country and that whaling will have a negative impact on the whale watching sector and the tourism industry all together. A comparative analysis of scholarly articles was conducted alongside a survey to examine the impacts of whaling on the whale watching industries of certain countries. The results showed whaling and whale watching can coexist …

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The Effects Of Significant Rainfall Events On Surface Dissolved Oxygen Concentrations Off The Coast Of Long Bay In South Carolina, Kelsey M. Couch May 2012

The Effects Of Significant Rainfall Events On Surface Dissolved Oxygen Concentrations Off The Coast Of Long Bay In South Carolina, Kelsey M. Couch

Honors Theses

Long Bay in South Carolina is currently facing recurrent hypoxic conditions ("South Carolina Coastal Hypoxia"). Therefore the purpose of this study was to examine the effect of eight significant rainfall events on the surface dissolved oxygen content of the bay. Differences in theoretical values of average monthly dissolved oxygen content and actual values of average monthly dissolved oxygen were observed. When analyzed, the data from the eight-month study showed no strong correlation between significant rainfall events and changes in surface dissolved oxygen content. Phytoplankton blooms, phytoplankton productivity and seasonal stratifications could be causing these fluctuations (Lomas et al. 2009).

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Effects Of "Ultrasound" On Completion Of Cognitive Tasks In Relation To Dolphin Assisted Therapy, Carrie Wein May 2012

Effects Of "Ultrasound" On Completion Of Cognitive Tasks In Relation To Dolphin Assisted Therapy, Carrie Wein

Honors Theses

In previous studies, it has been suggested that ultrasound may be the mechanism behind the success of Dolphin Assisted Therapy programs. This study was conducted to determine whether advertising these positive effects of dolphin produced ultrasound to prospective patients will elicit a placebo effect of improving cognitive function. A memory matching task was designed to measure cognitive task completion efficiency, and completion times were recorded in seconds. Participants were divided into two groups, Group A completing the task under normal, or control conditions first, and under the mock "ultrasound" condition second, while Group B received the mock "ultrasound" condition first …

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The Importance Of Isolated Wetlands As Habitat For Rare And Endangered Species In Comparison To Riparian Wetlands, Hillary K. Ballantine May 2012

The Importance Of Isolated Wetlands As Habitat For Rare And Endangered Species In Comparison To Riparian Wetlands, Hillary K. Ballantine

Honors Theses

In this paper, I will review the literature on the factors contributing to the presence of rare or endangered species, the species found in each wetland type and what threatens them, and the views on how to and why we should conserve these habitats. I will also provide data analyses on the importance of isolated wetlands as habitats for rare and endangered species in comparison to riparian wetlands, and present my own views on the topic.

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Linking Goniometer Measurements To Hyperspectral And Multi-Sensor Imagery For Retrieval Of Beach Properties And Coastal Characterization, Charles M. Bachmann, Deric Gray, Andrei Abelev, William D. Philpot, Marcos J. Montes, Robert A. Fusina, Joseph Musser, Rong-Rong Li, Michael Vermillion, Geoffrey Smith, Daniel Korwan, Charlotte Snow, David W. Miller, Joan Gardner, Matt Sletten, Georgi Georgiev, Barry Truitt, Marcus Kilmon, Jon Sellars, Jason Woolard, Christopher Parrish, A. Schwarzschild May 2012

Linking Goniometer Measurements To Hyperspectral And Multi-Sensor Imagery For Retrieval Of Beach Properties And Coastal Characterization, Charles M. Bachmann, Deric Gray, Andrei Abelev, William D. Philpot, Marcos J. Montes, Robert A. Fusina, Joseph Musser, Rong-Rong Li, Michael Vermillion, Geoffrey Smith, Daniel Korwan, Charlotte Snow, David W. Miller, Joan Gardner, Matt Sletten, Georgi Georgiev, Barry Truitt, Marcus Kilmon, Jon Sellars, Jason Woolard, Christopher Parrish, A. Schwarzschild

Center for Coastal and Ocean Mapping

In June 2011, a multi-sensor airborne remote sensing campaign was flown at the Virginia Coast Reserve Long Term Ecological Research site with coordinated ground and water calibration and validation (cal/val) measurements. Remote sensing imagery acquired during the ten day exercise included hyperspectral imagery (CASI-1500), topographic LiDAR, and thermal infra-red imagery, all simultaneously from the same aircraft. Airborne synthetic aperture radar (SAR) data acquisition for a smaller subset of sites occurred in September 2011 (VCR'11). Focus areas for VCR'11 were properties of beaches and tidal flats and barrier island vegetation and, in the water column, shallow water bathymetry. On land, cal/val …

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Comparison Of Saber Oh Measurements To Rocket Photometry Data, Jordan Rozum, Gene A. Ware, Doran J. Baker May 2012

Comparison Of Saber Oh Measurements To Rocket Photometry Data, Jordan Rozum, Gene A. Ware, Doran J. Baker

Browse All Undergraduate research

In 2002, the Sounding of the Atmosphere us- ing Broadband Emission Radiometry (SABER) instru- ment aboard the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite went online and has since been providing radiometric data concern- ing the mesosphere and lower thermosphere/ionosphere (MLTI) region of the atmosphere. Researchers at the Utah State University NASA Space Grant Consortium have been tasked with validating measurements of the hydroxyl airglow volume emission rates (VER) taken by SABER. To this end, we compare SABER measurements of the altitude distribution of hydroxyl airglow to mea- surements taken by photometers aboard rockets launched between 1961 and 1986 …

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Atmospheric Circulation Change In The Central Himalayas Indicated By A High-Resolution Ice Core Deuterium Excess Record, Hongxi Pang, Shugui Hou, Susan Kaspari, Paul Mayewski, Douglas Introne, Valérie Masson-Delmotte, Jean Jouzel, Zhenchao Li, Yuanqing He, Sungmin Hong, Dahe Qin May 2012

Atmospheric Circulation Change In The Central Himalayas Indicated By A High-Resolution Ice Core Deuterium Excess Record, Hongxi Pang, Shugui Hou, Susan Kaspari, Paul Mayewski, Douglas Introne, Valérie Masson-Delmotte, Jean Jouzel, Zhenchao Li, Yuanqing He, Sungmin Hong, Dahe Qin

All Faculty Scholarship for the College of the Sciences

Continuous measurements of both δD and δ18O were performed along a 108.8 m ice core recovered from the East Rongbuk Glacier on the northeast saddle of Mt. Qomolangma (Everest) (28.03° N, 86.96° E, 6518 m above sea level) in September 2002. They provide the first high-resolution historical record of deuterium excess (d) in the central Himalayas. In this paper, we focus on d variability from 1951 to 2001 and its relationship with large scale atmospheric circulation. The d record exhibits significant seasonal variations, with low values in summer and high values in winter, reflecting the atmospheric circulation shift between winter …

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Surface Mass Transfer In Large Eddy Simulation (Les) Of Langmuir Turbulence, Cigdem Akan May 2012

Surface Mass Transfer In Large Eddy Simulation (Les) Of Langmuir Turbulence, Cigdem Akan

USF Tampa Graduate Theses and Dissertations

Over the past century the study of gas exchange rates between the atmosphere and the ocean has received increased attention because of concern about the fate of greenhouse gases such as CO2 released into the atmosphere. Of interest is the oceanic uptake of CO2 in shallow water coastal regions as biological productivity in these regions is on average about three times larger than in the open ocean. It is well-known that in the absence of breaking surface waves, the water side turbulence controls gas transfer of sparingly soluble gases such as CO2 from the air to the …

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Gravity Wave Propagation In A Diffusively Separated Gas: Effects On The Total Gas, Michael P. Hickey Ph.D., R. L. Walterscheid May 2012

Gravity Wave Propagation In A Diffusively Separated Gas: Effects On The Total Gas, Michael P. Hickey Ph.D., R. L. Walterscheid

Publications

We present a full-wave model that simulates acoustic-gravity wave propagation in a binary-gas mixture of atomic oxygen and molecular nitrogen, including molecular viscosity and thermal conductivity appropriately partitioned between the two gases. Compositional effects include the collisional transfer of heat and momentum by mutual diffusion between the two gases. An important result of compositional effects is that the velocity and temperature summed over species can be significantly different from the results of one-gas models with the same height dependent mean molecular weight (M(z)). We compare the results of our binary-gas model to two one-gas full-wave models: one where M is …

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Mode Water In The Sea Of Japan: A Study On The Reproducibility Of Mode Water In The Data-Assimilating Regional Navy Coastal Ocean Model, Lea Kristen Locke May 2012

Mode Water In The Sea Of Japan: A Study On The Reproducibility Of Mode Water In The Data-Assimilating Regional Navy Coastal Ocean Model, Lea Kristen Locke

Master's Theses

Mode water in the Sea of Japan (SOJ) is associated with anti-cyclonic eddies that form in the quasi-stationary meanders of the offshore Tsushima Warm Current. Previous work in this region has shown free-running, advanced ocean models are able to capture the physical processes that generate mode water; however, data assimilation is seen to ,I have a negative impact. A 3.5km resolution Regional Navy Coastal Ocean Model is used to assess the ability of a data-assimilating model to reproduce the mode water structure in the SOJ. The model's response to the assimilation of in-situ and synthetic profiles, derived from remotely sensed …

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The Evaluation Of Water Quality And Weather Patterns As Indicators For Escherichia Coli In Slaters Creek Watershed In Millersville, Tennessee, Jacqueline Brown May 2012

The Evaluation Of Water Quality And Weather Patterns As Indicators For Escherichia Coli In Slaters Creek Watershed In Millersville, Tennessee, Jacqueline Brown

Mahurin Honors College Capstone Experience/Thesis Projects

Water quality sampling was conducted in conjunction with the city of Millersville, Tennessee in order to assess levels of Escherichia coli (E. coli) in Slaters Creek. The city of Millersville is under a storm water National Pollutant Discharge Elimination System (NPDES) permit that requires compliance monitoring. In the past, monitoring of E. coli has resulted in noncompliance with state water quality regulations. A water quality assessment, including E. coli and water quality parameters, was conducted to determine if E. coli levels varied between dates within the study area. Statistical methods were utilized to determine if variations existed between the sampling …

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Large, Long-Lived Convective Systems Over Subtropical South America And Their Relationships With Atmospheric Teleconnections, Kyle Mattingly May 2012

Large, Long-Lived Convective Systems Over Subtropical South America And Their Relationships With Atmospheric Teleconnections, Kyle Mattingly

Mahurin Honors College Capstone Experience/Thesis Projects

This study provides a climatological assessment of persistent elongated convective systems (PECS) over subtropical South America during the austral warm seasons of 1998-2007 and a comparison of PECS frequency and physical characteristics to mesoscale convective complexes (MCCs) in the region. Relationships between the Antarctic Oscillation (AAO) and El Niño – Southern Oscillation (ENSO) teleconnections and large, long-lived convective systems (LLCSs) are explored. An average of 143 PECS and 37 MCCs occurred per warm season. PECS lasted longer on average than MCCs (17 hrs. vs. 14 hrs.) and reached a greater average maximum cloud-shield extent than MCCs (297,300 km2 vs. 256,500 …

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Usage Of Videomosaic For Computer Aided Analysis Of North Sea Hard Bottom Underwater Video For Baseline Study Of Offshore Windmill Park, Aleksej Shashkov, Thomas Dahlgren, Marie-Lise Schlappy, Yuri Rzhanov May 2012

Usage Of Videomosaic For Computer Aided Analysis Of North Sea Hard Bottom Underwater Video For Baseline Study Of Offshore Windmill Park, Aleksej Shashkov, Thomas Dahlgren, Marie-Lise Schlappy, Yuri Rzhanov

Center for Coastal and Ocean Mapping

Windmill park on the open North Sea coast at Hävsul area in Norway is one of the first in the world to be build on such extreme high-energy coast. To determine possible environmental impact of this project, baseline study was performed in 2010-2011. Two areas, impacted (area where windmill park is planned to be build) and reference were chosen. For hard bottoms work class ROV was used to take underwater video, as no traditional sampling methods are suitable for such environment and depths. The system was equipped with powerful (400 Watt) xenon lights, USBL navigation and HDTV color camera. For …

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Developing A Gis-Database And Risk Index For Potentially Polluting Marine Sites, Giuseppe Masetti, Brian R. Calder, Lee Alexander May 2012

Developing A Gis-Database And Risk Index For Potentially Polluting Marine Sites, Giuseppe Masetti, Brian R. Calder, Lee Alexander

Center for Coastal and Ocean Mapping

The increasing availability of geospatial marine data provides an opportunity for hydrographic offices to contribute to the identification of “Potentially Polluting Marine Sites” (PPMS). These include shipwrecks, oil rigs, pipelines, and dumping areas. To adequately assess the environmental risk of these sites, relevant information must be collected and converted into a multi-scale geodatabase suitable for site inventory and geo-spatial analysis. In addition, a Risk Index – representing an assessment of the magnitude of risk associated with any site – can be derived to determine the potential impacts of these PPMS. However, the successful collection and integration of PPMS information requires …

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Development Of A Geo-Spatial Analysis Methodology For Assessing The Adequacy Of Hydrographic Surveying And Nautical Charts, Chukwuma Azuike, Shachak Pe'eri, Lee Alexander, Christopher Parrish, Andy Armstrong May 2012

Development Of A Geo-Spatial Analysis Methodology For Assessing The Adequacy Of Hydrographic Surveying And Nautical Charts, Chukwuma Azuike, Shachak Pe'eri, Lee Alexander, Christopher Parrish, Andy Armstrong

Center for Coastal and Ocean Mapping

IHO Publication C-55 (Status of Hydrographic Surveying and Nautical Charting Worldwide) contains information about the progress of hydrographic surveying and nautical charting for a country with navigable waters under its jurisdiction. Listed primarily as percent coverage, it is difficult to use this information to determine: 1) if the current level of surveying or charting is adequate or in need of action, or 2) can be used to compare different locations. An analysis and assessment methodology has been developed to assess the adequacy hydrographic surveying and nautical charting coverage. Indications of chart adequacy and completeness as depicted on current charts or …

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Light Detection And Ranging (Lidar) And Multispectral Studies Of Disturbed Lake Superior Coastal Environments, W. Charles Kerfoot, Foad Yousef, Sarah A. Green, Robert Regis, Robert Shuchman, Colin N. Brooks, Michael Sayers, Bruce Sabol, Mark Graves May 2012

Light Detection And Ranging (Lidar) And Multispectral Studies Of Disturbed Lake Superior Coastal Environments, W. Charles Kerfoot, Foad Yousef, Sarah A. Green, Robert Regis, Robert Shuchman, Colin N. Brooks, Michael Sayers, Bruce Sabol, Mark Graves

Michigan Tech Research Institute Publications

Due to its high spatial resolution and excellent water penetration, coastal light detection and ranging (LiDAR) coupled with multispectral imaging (MSS) has great promise for resolving shoreline features in the Great Lakes. Previous investigations in Lake Superior documented a metal-rich “halo” around the Keweenaw Peninsula, related to past copper mining practices. Grand Traverse Bay on the Keweenaw Peninsula provides an excellent Great Lakes example of global mine discharges into coastal environments. For more than a century, waste rock migrating from shoreline tailings piles has moved along extensive stretches of coast, damming stream outlets, intercepting wetlands and recreational beaches, suppressing benthic …

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Red Sea Coral Reef Trajectories Over 2 Decades Suggest Increasing Community Homogenization And Decline In Coral Size, Bernhard Riegl, Andrew W. Bruckner, Gwilym Rowlands, Samuel J. Purkis, Philip Renaud May 2012

Red Sea Coral Reef Trajectories Over 2 Decades Suggest Increasing Community Homogenization And Decline In Coral Size, Bernhard Riegl, Andrew W. Bruckner, Gwilym Rowlands, Samuel J. Purkis, Philip Renaud

Marine & Environmental Sciences Faculty Articles

Three independent line intercept transect surveys on northern Red Sea reef slopes conducted in 1988/9 and 1997/8 in Egypt and from 2006–9 in Saudi Arabia were used to compare community patterns and coral size. Coral communities showed scale-dependent variability, highest at fine spatial and taxonomic scale (species-specific within and among reef patterns). At coarser scale (generic pattern across regions), patterns were more uniform (regionally consistent generic dominance on differently exposed reef slopes and at different depths). Neither fine- nor coarse-scale patterns aligned along the sampled 1700 km latitudinal gradient. Thus, a latitudinal gradient that had been described earlier from comparable …

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A Study Of The Spawning Ecology And Early Life History Survival Of Bonneville Cutthroat Trout, Phaedra E. Budy, Sarah Wood, Brett B. Roper May 2012

A Study Of The Spawning Ecology And Early Life History Survival Of Bonneville Cutthroat Trout, Phaedra E. Budy, Sarah Wood, Brett B. Roper

Watershed Sciences Faculty Publications

We completed a large-scale field experiment in four tributaries of the Logan River, Utah, where the largest metapopulation of imperiled Bonneville cutthroat trout Oncorhynchus clarkii utah persists. We documented the spatial and temporal distributions of spawners, quantified substrate use versus substrate availability, and evaluated differences in hatch and emergence fry success between and among sites in relation to habitat characteristics. We observed considerable variability in the timing, magnitude, and duration of spawning among study areas (streams), in part as a function of a variable, multipeaked hydrograph. Nevertheless, across study areas, >70% of redds were constructed on the final descending limb …

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Establishing A Multibeam Sonar Evaluation Test Bed Near Sidney, British Columbia, Rob Hare, Clay Whittaker, J.E. Hughes Clarke, Jonathan Beaudoin May 2012

Establishing A Multibeam Sonar Evaluation Test Bed Near Sidney, British Columbia, Rob Hare, Clay Whittaker, J.E. Hughes Clarke, Jonathan Beaudoin

Center for Coastal and Ocean Mapping

The Canadian Hydrographic Service (CHS), Naval Oceanographic Office (NAVOCEANO) and the Ocean Mapping Group of the University of New Brunswick (OMG) collaborated on establishing a multibeam sonar test bed in the vicinity of the Institute of Ocean Sciences in Sidney, British Columbia Canada. This paper describes the purpose of the sonar evaluation test bed, the trials and tribulations of two foreign governments collaborating on projects of mutual interest, the evaluation areas and their characteristics for sonar testing, and sample results of sonar evaluations using this test bed. Some target detection comparisons of several systems over a range of artificial sonar …

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Beyond The Chart: The Use Of Satellite Remote Sensing For Assessing The Adequacy And Completeness Information, Shachak Pe'eri, Chukwuma Azuike, Lee Alexander, Christopher Parrish, Andy Armstrong May 2012

Beyond The Chart: The Use Of Satellite Remote Sensing For Assessing The Adequacy And Completeness Information, Shachak Pe'eri, Chukwuma Azuike, Lee Alexander, Christopher Parrish, Andy Armstrong

Center for Coastal and Ocean Mapping

Chart adequacy and completeness information consists of the symbols, abbreviations and warnings used to inform mariners of the level of confidence that should be given to data on a nautical chart. This information is derived both from the nautical chart and sailing directions. However, analysis based solely on these datasets is limited without access to the sources (e.g., smooth sheets). Publically-available, multi-spectral satellite imagery and published algorithms can be used to derive estimates of the relative bathymetry in shallow, clear waters. In this study, we evaluate the potential of these methods for supplementing the procedure to assess the adequacy of …

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The Impact Of Sea State Condition On Airborne Lidar Bathymetry Measurements, Torbjorn Karlsson, Andreas Axelsson, Shachak Pe'eri May 2012

The Impact Of Sea State Condition On Airborne Lidar Bathymetry Measurements, Torbjorn Karlsson, Andreas Axelsson, Shachak Pe'eri

Center for Coastal and Ocean Mapping

Due to a large number of available Airborne Lidar Bathymetry (ALB) survey datasets and scheduled future surveys, there is a growing need from coastal mapping communities to estimate the accuracy of ALB as a function of the survey system and environmental conditions. Knowledge of ALB accuracy can also be used to evaluate the quality of products derived from ALB surveying. This paper presents theoretical and experimental results focused on the relationship between sea surface conditions and the accuracy of ALB measurements. The simulated environmental conditions were defined according to the typical conditions under which successful ALB surveys can be conducted. …

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Evaluation Of Electrophoretic Protein Extraction And Database-Driven Protein Identification From Marine Sediments, Eli K. Moore, Brook L. Nunn, Jessica F. Faux, David R. Goodlett, H. Rodger Harvey May 2012

Evaluation Of Electrophoretic Protein Extraction And Database-Driven Protein Identification From Marine Sediments, Eli K. Moore, Brook L. Nunn, Jessica F. Faux, David R. Goodlett, H. Rodger Harvey

OES Faculty Publications

Intact proteins comprise a major component of organic carbon and nitrogen produced globally and are likely an important fraction of organic matter in sediments and soils. Extracting the protein component from sediments and soils for mass spectral characterization and identification represents a substantial challenge given the range of products and functionalities present in the complex matrix. Multiple forms of gel electrophoresis were evaluated as a means of enhancing recovery of sedimentary protein before proteomic characterization and compared with a direct enzymatic digestion of proteins in sediments. Resulting tryptic peptides were analyzed using shotgun proteomics and tandem mass spectra were evaluated …

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An Evaluation Of Cape Tendency In Tornado Outbreaks, Timothy W. Humphrey, Lance F. Bosart May 2012

An Evaluation Of Cape Tendency In Tornado Outbreaks, Timothy W. Humphrey, Lance F. Bosart

Atmospheric & Environmental Sciences

Previous studies (e.g., Rasmussen, 2003; Thompson et al., 2003) have examined the impact that instability has on the occurrence of tornadic supercells. However, few studies (e.g., Calas et al., 2000) have examined the impact that the rate of destabilization has on the development of severe convection. Utilizing a CAPE tendency equation derived by Emanuel (1994), this study examines the impact of the rate of atmospheric destabilization on the severity of convection. Comparing six hour analyses of CAPE tendency with observed tornado tracks from the 4-6 May 2007, 5-6 February 2008, and 17 June 2010 tornado outbreaks reveals a potential correlation …

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Largescale Precursors To Major Lake Effect Snowstorms Lee Of Lake Erie, Hannah E. Attard, Ross A. Lazear May 2012

Largescale Precursors To Major Lake Effect Snowstorms Lee Of Lake Erie, Hannah E. Attard, Ross A. Lazear

Atmospheric & Environmental Sciences

Lake‐effect snowstorms are primarily a mesoscale feature; however, major lakeeffect snowstorms are linked closely to their synoptic environment. Thus, a lakeeffect system which lasts for more than 24 h cannot only be explained by the boundary layer; it is also associated with the upper tropospheric flow. This research will address whether major lake‐effect snow events off of Lake Erie can also be associated with large‐scale planetary features several days prior to event onset. The goal is to aid in the forecast process by increasing the accuracy and leadtime of lake‐effect snow forecasts. This study includes 31 cases recorded from the …

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The Rapid Intensification Of Hurricane Gustav (2008), Jason H. Keefer May 2012

The Rapid Intensification Of Hurricane Gustav (2008), Jason H. Keefer

Atmospheric & Environmental Sciences

Hurricane Gustav was one of two major hurricanes that occurred in the Atlantic basin during the 2008 hurricane season. The storm caused more than $6 billion U. S. dollars of damage in Haiti, Jamaica, Cuba, and along the coast of the Gulf of Mexico from 25 August 2008 to 5 September 2008. The greatest amount of damage and highest number of casualties produced by the storm can be attributed to the rapid intensification of the hurricane. Rapid intensification (RI) of a tropical cyclone is defined as an increase in maximum sustained winds by 15.4 m s⁻¹ (30 kts) in a …

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Long-Term Changes To The Frost-Free Season As A Function Of Climatic Continentality, Ian Blaylock May 2012

Long-Term Changes To The Frost-Free Season As A Function Of Climatic Continentality, Ian Blaylock

Mahurin Honors College Capstone Experience/Thesis Projects

The beginning, end, and length of the annual frost-free season vary considerably both spatially and temporally. The continentality of the climate of a given area has a close connection with the magnitude and nature of these variations. Long term changes in the frost-free season can be divided into three distinct phases: a lengthening of the frost-free season in the early 20th century, a shortening in the mid-20th century, and a renewed, intensified lengthening from 1970 to today. While oceanic and ultraoceanic climates experience decreased incidence of frosts relative to their continental counterparts, analysis has shown that overall 20 …

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Comparison Of The Observed Mixe Layer Depth In The Lee Of The Hawaiian Island To The Modeled Mixed Layer Depth Of The Regional Navy Coastal Ocean Model, Jeffery Todd Rayburn May 2012

Comparison Of The Observed Mixe Layer Depth In The Lee Of The Hawaiian Island To The Modeled Mixed Layer Depth Of The Regional Navy Coastal Ocean Model, Jeffery Todd Rayburn

Master's Theses

Accurately modeling the depth of the surface mixed layer in the lee of the Hawaiian Islands is important to naval operations because the area hosts numerous training exercises. Providing an accurate picture of the environment aids naval operators in making important tactical decisions. This study evaluates the ability of the Hawaii Regional Navy Coastal Ocean Model to accurately predict the depth of the surface mixed layer in this complex, wake island environment. The model was compared to CTD data collected from sea gliders and tests for correlation were conducted. For mixed layer depths that did show correlation, match paired t …

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Develping A Methodology For The Mapping And Characterization Of The Nigerian Coastline Using Remote Sensing, Olumide Fadahunsi, Shachak Pe'eri, Lee Alexander, Christopher Parrish May 2012

Develping A Methodology For The Mapping And Characterization Of The Nigerian Coastline Using Remote Sensing, Olumide Fadahunsi, Shachak Pe'eri, Lee Alexander, Christopher Parrish

Center for Coastal and Ocean Mapping

Coastline delineation is important in maritime boundary determination, as well as for analyzing coastline change rates due to coastal erosion, sea level change, storms, and other causes. Coastline change rate estimates depend on the uncertainty of the current and historical coastlines used in the analysis, which, in turn, depend on the surveying technologies and techniques that were originally used. Current techniques for coastline mapping include photogrammetric delineation using tide-coordinated aerial imagery. However, in many developing countries, the charted coastlines may have been inadequately and inconsistently mapped largely due to inadequate resources. This paper describes the use of an automated technique …

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Seafloor Characterization For Trawlability Using The Simrad Me70 Multibeam Echosounder In The Gulf Of Alaska, Jodi L. Pirtle, Thomas C. Weber, Chris Rooper, Christopher D. Wilson, Brian R. Calder May 2012

Seafloor Characterization For Trawlability Using The Simrad Me70 Multibeam Echosounder In The Gulf Of Alaska, Jodi L. Pirtle, Thomas C. Weber, Chris Rooper, Christopher D. Wilson, Brian R. Calder

Center for Coastal and Ocean Mapping

No abstract provided.

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