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Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
Satellite data is compared to objectively analyzed wind data from the Hurricane Research Division's H*Wind software to attempt to quantify the value that satellite data could bring to the objective analysis. Previous research (DiNapoli...
Seamounts are one of the largest biomes on earth, yet remain one of the least explored. They are known to be centers of increased biomass, species richness, endemism and speciation as well as areas of distinct community structure, as...
This research project seeks to evaluate the rainfall forecast accuracy of the GEFS (Global Ensemble Forecast System) following the 2010 model update, analyzing the Atlantic September 2010 Hurricane Karl as a case study. Archived...
The Great Smokey Group and the Mineral Bluff Group of the southern Appalachians Blue Ridge contain units of metaconglomerate that contain stretched quartz pebbles. Quartz pebbles have been widely used as strain markers in conglomerates....
Two major thrust systems are located along the eastern Blue Ridge รขยย western Blue Ridge boundary in the Alabama and Georgia Appalachians. The pre-metamorphic Hillabee thrust is near the trailing edge of the Talladega belt thrust sheet...
The land/sea warming contrast being greater than unity is a well-known phenomenon in response to anthropogenic radiative forcing. The land/sea surface warming asymmetry is essentially a result of the differing surface and boundary layer...
Understanding and predicting the evolution of the tropical cyclone (TC) inner-core continues to be a major research focus in tropical meteorology. Eyewall slope and its relationship to intensity and intensity change is one example that...
A large fraction of the continental shelf is covered by permeable sediments that are flushed by wave, wind, and tide generated bottom currents. Elevated dissolved organic carbon (DOC) concentrations in coastal zones, a diverse and...
The Florida Big Bend region in the northeastern Gulf of Mexico contains both spawning sites and nursery habitats for a variety of economically valuable marine species. One species, the gag grouper (Mycteroperca microlepis), relies on the...
The deep-sea, soft-bottom habitat is considered the largest ecosystem on Earth, yet little is known about the biogeography of the infauna. This dissertation examines the species' ranges of the meiofaunal taxon Harpacticoida (Crustacea:...
Ice clouds play an important role in earth radiation balance by reflecting solar and absorbing thermal radiation, the so-called albedo versus greenhouse eects, which cause signicant dierential atmospheric heating and cooling in...
Ocean transport of heat is a substantial component of the climate system but its characteristics and dynamic causes are still somewhat unknown. Prior research has shown that global observations from the ocean and atmosphere indicate that...
The advent of ensembles permits forecasters to have an implied level of confidence based upon the level of (dis)agreement among those ensembles. However, there are occasionally situations where the ensemble members may agree but be in...
Metallic nodules are common in metamorphosed ordinary chondrites. The origin of metal nodules has been debated because the mechanism of the formation of metal nodules is not known. Several proposed scenarios, e.g., the metal nodules and...
A new metric for identifying severe tornado (F3+) alleys is presented. Regions are distinguished by average F-scale values with a minimum of 15 severe tornado events within 200km. Five distinct "severe tornado alleys" are described...
Department of Energy (DOE) proposed an in situ remediation approach to radioactive metal contaminants in DOE complex through calcite mineral precipitation facilitated by hydrolysis of urea (ureolysis). One of the ureolysis products, ...
Investigations of the Ecology of Calcareous Nannoplankton and Nannofossils in the North-East Gulf of Mexico to Help Establish a Baseline for Environmental Impact Studies
This study presents for the first time, ecological relationships between coccolithophores and environmental conditions in the northeastern Gulf of Mexico. Cell densities of coccolithophores were determined in 598 samples taken from...
Radon is an important natural tracer for certain aquatic environmental studies. New methods for rapidly determining submarine groundwater discharge (SGD) into surface waters in the coastal zone rely on the accuracy of the air/water...
This study focuses on the interannual and intraseasonal variability of evaporative sources for rainfall events during the Indian monsoon. The monsoon is an important part of the economy and lifestyle in India, thus, any improvements in...
During IODP Leg 317 off the east coast of New Zealand, three continental shelf sites (U1351, U1353 and U1354) and one continental slope site were cored. Sedimentary sequences representing shallow water depositional cycles were recovered...
A significant challenge in groundwater reactive transport modeling is to develop scale-appropriate parameters to represent physical and chemical heterogeneities that impact solute migration estimates and predictions. This dissertation...
The recent reports of methane in the atmosphere of Mars, as well as the findings of hypersaline paleoenvironments on that planet, have underscored the need to evaluate the importance of biological (as opposed to geological) trace gas...
Satellite observations have revealed a small-scale (< 1000 km) air-sea coupling in regions of strong sea surface temperature (SST) gradients (e.g., fronts, currents, eddies, and tropical instability waves), where the surface wind and...
The primary goal of this dissertation was to explore the use of stable isotope analysis as a tool to understand how energy flows at several layers of biological organization from the individual to the ecosystem level. With the exception...
Emission of mercury from the burning of coal is considered one of the important anthropogenic sources of atmospheric mercury. Along with current measurements of the isotopic composition of atmospheric mercury being conducted in our...
High-Resolution Calcareous Nannofossil Biostratigraphic Applications: Examples from the Upper Cretaceous Southern Ocean (ODP Leg 183) and Paleocene Equatorial Atlantic (ODP Leg 207)
This dissertation is a collection of high-resolution calcareous nannofossil biostratigraphic projects. The projects are from Ocean Drilling Program (ODP) Leg 183 to the Kerguelen Plateau (Hole 1138A) and ODP Leg 207 to the Demerara Rise, ...
This dissertation research has used stable and radioactive isotope techniques to address several important issues in paleoclimate and paleoecoloical research which includes the reliability of using stable carbon isotope composition of...
In this study, we have diagnosed diabatic heating, meridional adiabatic mass and angular momentum transport, and downward transfer of westerly angular momentum by the pressure torque in isentropic coordinates using daily NCEP-NCAR...
The DOC reactivity of a northern peatland was investigated by measuring and modeling concentrations, stable isotopes, and natural abundance radiocarbon of solid phase peat, DOC, DIC, and CH4 in field and lab studies. We tested the...
Nitrogen (N) is often a limiting nutrient for primary productivity in the ocean and plays a critical role in the global carbon cycle. Fixation of N2 into reactive N (Nr) by photosynthetic prokaryotes in surface waters is a primary source...
Centrifugal instability (CI) has been suggested by recent numerical studies to be a boundary mechanism promoting mixing. As opposed to Kelvin-Helmholtz instability, however, little is known about its detailed energetics. The goal of this...
The Tongue of the Ocean (TOTO) region located within the Bahamas archipelago is a relatively under-studied region in terms of both its biological and physical oceanographic characteristics. This region is comprised of a deep trough along...
Anthropogenic emissions are transported both locally and globally. Depending on the magnitude of the transport, the emissions can have varying impacts on air quality and atmospheric chemistry. Transport occurs most efficiently if...
The U.S. Air Force's 45th Weather Squadron (45WS) seeks improved forecasts of lightning cessation at the Kennedy Space Center (KSC) and Cape Canaveral Air Force Station (CCAFS) in Florida. The 45WS currently keeps lightning advisories...
Recent proxies analysis suggest that, at the end of the last glacial, there was a significant increase in the injection of Agulhas rings into the South Atlantic (SA). This brought about a dramatic increase in the salt-influx (from the...
During an El Niรฑo anomalous westerly winds in the central equatorial Pacific push the equatorial water eastward, raising the sea level in the eastern equatorial Pacific and lowering it in the western equatorial Pacific. In the western...
Calcareous nannofossils and stable isotopes were analyzed to determine the timing and causes of extensive Miocene debris flows and Oligocene slumps recovered by Ocean Drilling Program (ODP), cruise Leg 207 to Demerara Rise along French...
The goal of this research is to describe and quantify the role of deep convection within the Strait of Malacca (hereafter referred to as the "Strait" a part of the Maritime Continent in Southeast Asia) on the long-range transport of ship...
The process by which tropical cyclones evolve from loosely organized convective clusters into well organized systems is still poorly understood. Due to the data sparse regions in which tropical cyclones form, observational studies of...
The growth of a locally isolated strain of green algae, Chlorella sp., selected for its promise as a biodiesel feedstock, was studied in wastewater effluent from the municipal wastewater treatment plant in Tallahassee FL. Nutrient...
The sporadic nature of lightning in tropical cyclones (TCs) is a topic of great interest to researchers and forecasters. This study explores relationships between lightning, cloud microphysics, and TC storm structure in rapidly...
This study presents a new algorithm to dealias folded Doppler velocities in S, C, and X-Band radars using a new boundary detection technique on the raw velocity field as a whole, rather than the traditional gate by gate methodology used...
Late Quaternary Evolution of the Northwest Florida Coast and Margin: Development of a Conceptual Model for Identifying and Characterizing Shelf Sediment Deposits
The objective of this investigation was the interpretation of the late Quaternary history of the northwest Florida margin and the development of a conceptual model for understanding the late Quaternary evolution of the regional coast and...
Determining the Characteristics of Anvil and Thunderstorm Lightning for Use in the Lightning Launch Commit Criteria at Cape Canaveral Air Force Station and Kennedy Space Center
The 45th Weather Squadron (45WS) provides weather support to America's space program at Florida's Cape Canaveral Air Force Station (CCAFS), Kennedy Space Center (KSC), and Patrick Air Force Base (PAFB). Since CCAFS/KSC lies within...
The Cartersville area in Georgia lies at the junction between the Alabama Recess and the Tennessee Salient. The rocks here are the easternmost exposures in the foreland fold and thrust belt of the southern Appalachians. It is bounded to...
In the uppermost millimeters of shallow marine sands, photosynthesis by microalgae can cause oxygen supersaturation, leading to formation of oxygen bubbles and subsequent ebullition of the gas from the sediment. The role of ebullition...
The geostationary satellite television (TV) signals that are reflected off the ocean surfaces could enter the AMSR-E antenna, resulting in RFI (Radio Frequency Interference) contamination in AMSR-E 10.65 and 18.7 GHz channels. If not...
ABSTRACT This work presents turbulence data collected in the Gulf of Mexico in an attempt to quantify the source or sources of turbulent dissipation along the continental shelf and any possible causes for its seasonal change. In addition...
Nitrates (NO3- ) are one of the principal contaminants in ground water. Excess nitrate in ground water is known to cause serious illnesses such as methemoglobinemia, and cancer. In addition to the adverse impact on the health of humans, ...
Tropical cyclogenesis in the eastern North Pacific (EPAC) basin is related to gap-wind-induced vorticity, the monsoon trough, and the intertropical convergence zone (ITCZ). There are several gaps in the Central American Mountains, on the...
Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
