Oceanography and Atmospheric Sciences and Meteorology Commons^™

Modeling Air Pressure Propagation Through Wind Cave And Jewel Cave: How Can Air Pressure Signals Inside Barometric Caves Be Predicted From Surface Pressure Measurements?, Annika K. Gomell, Andreas Pflitsch

International Journal of Speleology

Recent speleoclimatological research has shed new light on air pressure dynamics inside barometric caves by identifying pressure-modifying processes and resulting systematic differences between cave and surface air pressure. Based on these new findings, a multi- step quantitative model is developed and explored to predict air pressure inside Wind Cave and Jewel Cave – two major barometric cave systems in the Black Hills of South Dakota, USA – from external surface measurements. Therefore, each identified speleoclimatological pressure process is translated into a mathematical operation. Model evaluation based on Pearson correlation and mean (absolute) deviation between model outputs and control measurements yields …

Controls On Buffering And Coastal Acidification In A Temperate Estuary, Christopher W. Hunt, Joseph Salisbury, Douglas Vandemark

Faculty Publications

Estuaries may be uniquely susceptible to the combined acidification pressures of atmospherically driven ocean acidification (OA), biologically driven CO2 inputs from the estuary itself, and terrestrially derived freshwater inputs. This study utilized continuous measurements of total alkalinity (TA) and the partial pressure of carbon dioxide (pCO2) from the mouth of Great Bay, a temperate northeastern U.S. estuary, to examine the potential influences of endmember mixing and biogeochemical transformation upon estuary buffering capacity (β–H). Observations were collected hourly over 28 months representing all seasons between May 2016 and December 2019. Results indicated that endmember mixing explained most of the observed variability …

Investigating Temporal Groundwater Interactions Between A Barrier Island And High Marsh Environment, Dean Wrobel

Undergraduate Research Competition

Saltmarsh hydrogeology can be characterized as exceptionally dynamic, with a diversity of pore water salinities, sediment porosities, and varied hydrologic inputs and outputs such as groundwater, precipitation, and tidal cycles. Of the studies done in these systems, much attention has been focused on the low marsh with regard to tidal pumping and the consequent horizontal pressure gradients which affect the subsurface hydraulic head. Perhaps, an equally dynamic boundary is expected at the groundwater interface of the barrier island and high marsh. Here, electrical resistivity tomograms were generated in a back-barrier, high-marsh site landward of Waties Island, South Carolina. Co-located transects …

Microplastic Concentration Analysis Of The Atlantic Sand Fiddler Crab (Leptuca Pugilator) In Murrells Inlet, South Carolina, Caroline Conner

Undergraduate Research Competition

Microplastics pose a great threat to the natural environment, a threat not aided by their increasing abundance in marine waters. To assess how this is affecting our local area, I examined the microplastic concentration in fiddler crabs, a keystone species in intertidal zones, from two marsh systems in Murrells Inlet. The quantity, color, and type of microplastic found were recorded from each of the 120 crabs sampled. This information is revelant not only in monitoring the health of a species that plays a major role in nutrient recycling and prevention of anoxic conditions, but also as a caution to us. …

What Lives On Offshore Artificial Reefs In South Carolina? An Analysis Of Epifaunal Reef Communities And How They Vary With Reef Age, Sydney Madden

Undergraduate Research Competition

Artificial reef structures have been deployed across the coast of South Carolina in an effort to increase fish habitat and provide other ecosystem services. There are approximately 45 artificial reef systems established by the South Carolina Department of Natural Resources (SCDNR) over several decades. The hard structure—frequently composed of concrete, old boats, or other structures—forms unique high relief hard-bottom habitat in the otherwise largely low relief coastal shelf. Currently, there is little published on the species composition of the epifaunal communities in this region, how much biomass they support, and how they develop over time. We studied two established artificial …

Relative Energy Comparison For Various Water Clusters Using Mp2, Df-Mp2, And Ccsd(T):Mp2 Methods, Qihang Wang

Honors Theses

The study of water clusters is an important area of research in many disciplines, such as biology, physical chemistry, and environmental studies. However, due to the difficulty in studying larger water clusters, such as clathrate hydrates, it is beneficial to obtain accurate descriptions of smaller water clusters to use as models for larger systems via computational methods. By starting with small water clusters, such as (H2O)₆, and moving into larger systems it is possible to build up data on various water structures that can determine the energetics of the various geometries within a certain number of water molecules. …

Ignoring Species Availability Biases Occupancy Estimates In Single-Scale Occupancy Models, Graziella V. Direnzo, David A. W. Miller, Evan H. C. Grant

United States Geological Survey: Staff Publications

1. Most applications of single-scale occupancy models do not differentiate between availability and detectability, even though species availability is rarely equal to one. Species availability can be estimated using multi-scale occupancy models; however, for the practical application of multi-scale occupancy models, it can be unclear what a robust sampling design looks like and what the statistical properties of the multi-scale and single-scale occupancy models are when availability is less than one.
2. Using simulations, we explore the following common questions asked by ecologists during the design phase of a field study: (Q1) what is a robust sampling design for the multi-scale occupancy …

Mapping The Impact Of A Trailway System On The Amount Of Trash Present Within Two Watersheds Of Lynchburg City, Virginia, Lillian Smith

Student Scholar Showcase

Transportation of trash debris within water systems is a prominent occurrence which has been linked to natural and artificial processes such as wind, rain, and littering. Recreational areas, such as activities along greenway trails, have been determined to be a source of debris found in waterways. This study examines whether the presence of an established recreational trail system limits trash accumulation in the entirety of a watershed. Trash data collected at Blackwater Creek, which contains an established trail system, was compared to trash data collected at Fishing Creek, containing a non-established trail system, to answer this hypothesis. A distance of …

A Numerical Investigation Of Flood And Sediment Dynamics Over The Coastal Watersheds During Hurricane Events, Dongxiao Yin

LSU Doctoral Dissertations

Landfalling tropical cyclones can cause catastrophic floods and sediment disturbance over the coastal watersheds. This study aims to unravel the contribution of different processes to hurricane-induced flooding, to assess the uncertainties in flood modelling and forecasting, and to advance the techniques in sediment simulation over coastal watersheds during hurricanes.

First, I examined the hydrometeorology and hydrology of Hurricane Florence (2018) induced inland flooding. My results suggest that the slow motion in combination with the “L-shaped” path was the most distinctive feature of the hurricane that incurred catastrophic and widespread rainfall and flooding over the Cape Fear River Basin (CFRB).

Second, …

Effects Of Meteorologic Events On Wave Climate And Current Regime In A Shallow, Microtidal Bay, Jay S. Merrill

LSU Master's Theses

Along coastal Louisiana and within the shallow microtidal Barataria Bay estuary, meteorological events can play a primary role in influencing wave climate and circulation patterns. Understanding the effects of hurricanes and smaller tropical storms on hydrodynamic processes is important for constraining and predicting hydrodynamic variation in Barataria Bay, which, largely due to impacts from wave energy, is currently experiencing rapid wetland loss and is a major focus of coastal restoration efforts. Two bottom-mounted upward-facing Acoustic Current Doppler Profilers and wave, temperature, and depth recorders were installed in the lower portions of Barataria Bay to measure the wave climate and three-dimensional …

Changes To Maine's Winter Weather, Alexander Ingalls

Undergraduate Theses

The properties of winter weather in Maine are examined using several forms of analysis to illustrate changes in winter weather patterns over the past 40 years. While previous studies have determined several ways that climate change affects the entire state, this study seeks to better understand the impact of these changes in five specific regions. The resulting analyses shows how certain atmospheric variables such as precipitation, temperature, and snowfall vary in magnitude and location across the state and over time. The results suggest these changes have different consequences for different areas of the state.

Circulation, Volume 27, No. 2, Center For Coastal Physical Oceanography, Old Dominion University

CCPO Circulation

Spring 2022 issue of CCPO Circulation featuring the article "Looking Back While Moving Forward," by Sönke Dangendorf.

Droughtscape, Spring 2022, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

DroughtScape, Spring 2022

Making Net Zero Matter, Albert C. Lin

Washington and Lee Law Review

In recent months, dozens of countries and thousands of businesses have pledged to achieve net zero greenhouse gas emissions. However, net zero often means different things to different entities, and it is often uncertain how net zero pledges—which set targets years or decades from the present—will be met. This Article considers the motivations behind net zero pledges, highlights the underappreciated role of carbon removal in net zero efforts, and identifies mechanisms for encouraging the accomplishment of net zero goals. Two key strategies are essential to making net zero targets matter. First, society should develop and implement accountability and enforcement mechanisms …

Water: The Gift And The Curse: A Climate Change Preparedness Study On An Increased Rainfall Scenarios In The Yunguilla Cloud Forest, Ecuador, Emilia Dick Fiora Del Fabro

Independent Study Project (ISP) Collection

The purpose of this project was to try and better understand the risks posed to the Yunguilla community in an increased rainfall climate change scenario. While climate modeling is not exact, many models do predict increased rain and storm intensity in this area (“Explainer…”, 2018). This project studies erosion risk, and the potential damage to crops through a series of experiments and mapping.

The first experiment used three hydration percentages 50, 75 and 100, to water two crop types, Fragaria and Caspium, and monitored plant health to see the water's effect. The hydraulic stress testing did not model an increased …

The Battle For The Sea: Tourism Development And Public Ocean Access In Jambiani, Zanzibar, Sophie Beauchesne

Independent Study Project (ISP) Collection

The battle for coastal access is a prevalent and controversial issue in both the Global North and the Global South (Mongeau, 2001; Ojo, 2013). Due to investment in coastal land, vulnerable communities around the world are losing their access to the sea (Ojo, 2013; Bennett, Govan & Satterfield, 2015). Battles for ocean access in the Global North tend to focus on recreational activities, but what is to be said about ocean access in the Global South, where access to the sea is needed for the survival of entire communities? (Mongeau, 2001;). Using geographical mapping, environmental condition assessments and open-ended interviews …

Assessing The Threat Of Coral Decline On Fish Diversity In Response To Temperature, Ryland Talmadge

Independent Study Project (ISP) Collection

Misali, a PECCA-protected island off the east coast of Pemba, Tanzania, is considered to be a marine biodiversity hotspot with a protected Non-Extractive Zone (NEZ) and remaining Extractive Zone (EZ). Upon protection, the island’s fringe reefs faced severe coral bleaching during the 1998 bleaching event, estimated to kill up to 70% of corals. Since the event, several others have occurred in addition to restructuring the management plan in 2006 to expand the region to 1000km. While the damage from the most recent coral bleaching event in 2020 has yet to be surveyed, this study investigates the current reef health in …

“Antes ÉRamos De Tierra Firme”: Community Perspectives On The Past, Present, And Future Of Isla Narganá And Isla CorazóN De JesúS, Comarca Guna Yala In The Face Of A Changing Climate, Izabella R. Klosterman

Independent Study Project (ISP) Collection

The objective of this research was to learn about Isla Narganá and Isla Corazón de Jesús, Comarca Guna Yala residents’ perspectives on climate change and, to learn about what needs to be done to mitigate the effects of climate change on the islands. In April 2022, eighteen semi-structured interviews were conducted in Spanish with residents of the islands. Interviews revealed that flooding caused by sea level rise, intensification of precipitation events, extreme heat, and biodiversity loss were the most reported impacts of climate change on participants’ lives. Poor waste management opportunities were also discussed as a critical environmental issue affecting …

The Relationship Between Substrate Composition, Community Structure And Feeding Preferences Of Parrot Fishes (Scaridae) In Anmardub, Guna Yala Coastal Reefs, Caitlin Amman

Independent Study Project (ISP) Collection

Coral reefs are important marine ecosystems, as they support biodiversity and generate buffer zones, yet their abundance is incredibly limited globally. One of the main threats that coral reefs face is excessive macroalgal coverage, which limits sunlight from reaching corals, and thus, limits the energy that can reach them. Parrot fish (Scaridae) are keystone herbivores, as they consume macroalgae growing on corals, which aids in reef survivability. While there is previous research on the abundances, sizes, and feeding habits of Scaridae species in the Caribbean, there is no published research on how community structure and feeding preferences of parrot fishes …

Los Impactos Del Cambio Climático En Las Comunidades Aymaras En Putre, El Valle De Azapa Y Arica, Lindsey Kaufman

Independent Study Project (ISP) Collection

Research Question: How is climate change affecting Aymara communities in Putre, the valley of Azapa, and Putre?

Objectives: To understand the effects of climate on communities by 1) describing which environmental problems exist and their impact on agriculture and ranching, 2) understanding the patterns of migration away from the ancestral land, 3) exploring the connections to the social determinants of health that exist with these change, and 4) analyzing the significance of these changes in the agriculture for the communities’ traditions and connection to the land.

Background: Aymara communities have historically inhabited agricultural and ranching lands in …