Holly Michael | |
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Alma mater | Ph.D. Massachusetts Institute of Technology B.S. University of Notre Dame in Civil Engineering |
Awards | Faculty Early Career Development Award, National Science Foundation. Geological Society of America James B. Thompson, Jr. International's Distinguished Lectureship, 2018. ContentsUnidel Fraser Russell Career Development Chair in the Environment, University of Delaware. Oak Ridge Associated Universities Ralph E. Power Junior Faculty Award, 2010. |
Website | https://www.ceoe.udel.edu/our-people/profiles/hmichael |
Holly Michael is an American hydrogeologist and Associate Professor of geology at the University of Delaware's College of Earth, Ocean, and Environment. [1]
Holly earned her BS in Civil Engineering at the University of Notre Dame in 1998 [2] and her Ph.D. in Hydrology at the Massachusetts Institute of Technology in 2005. [3] Michael performed her graduate research at MIT on seasonal groundwater exchange in coastal zones in Massachusetts with her Ph.D. advisor Charles F. Harvey. [4]
Holly Michael is an Associate Professor of geology at the University of Delaware. [5] Her research focuses on coastal hydrogeology, groundwater-surface water interactions, and water resource management, and is often aimed at better understanding how groundwater flows and solute levels affect ecosystem and human health.
Prior to serving as an associate professor at the University of Delaware in 2008, Michael performed research at Stanford University and with the US Geologic Survey. [6] [7]
Michael's academic work has had a significant impact on the discipline of hydrogeology. Her research on groundwater contamination by arsenic in the Bengal Basin has implications for the 70 million people who rely on the Bengal Basin for drinking water. [8] Additionally, her work investigating the impacts of climate change on coastal aquifers in Bangladesh is relevant to the 40 million people who rely on those coastal ecosystems to live and work. [9] Michael has also performed research on strategies to effectively manage and store monsoonal flow in the Ganges Basin, [10] which has implications for flood management and water security. Her work has been published by a number of notable publications including Nature and Science. [11] [4] She currently leads the hydrogeology group in the department of Geologic Sciences at the University of Delaware. [12] [13]
In 2012, Holly Michael received the highly prestigious National Science Foundation Faculty Early Career Development Award. [14] This grant funded her research on groundwater-seawater interactions, focusing on the issues of groundwater salinization, sediment ripples, and tides. [15]
Michael's work has been published in scientific journals such as Nature and Science. [11] [4] Michael has 50 publications as of 2019.
Hydrology is the scientific study of the movement, distribution, and management of water on Earth and other planets, including the water cycle, water resources, and drainage basin sustainability. A practitioner of hydrology is called a hydrologist. Hydrologists are scientists studying earth or environmental science, civil or environmental engineering, and physical geography. Using various analytical methods and scientific techniques, they collect and analyze data to help solve water related problems such as environmental preservation, natural disasters, and water management.
Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table. Groundwater is recharged from the surface; it may discharge from the surface naturally at springs and seeps, and can form oases or wetlands. Groundwater is also often withdrawn for agricultural, municipal, and industrial use by constructing and operating extraction wells. The study of the distribution and movement of groundwater is hydrogeology, also called groundwater hydrology.
Hydrogeology is the area of geology that deals with the distribution and movement of groundwater in the soil and rocks of the Earth's crust. The terms groundwater hydrology, geohydrology, and hydrogeology are often used interchangeably.
An artesian well is a well that brings groundwater to the surface without pumping because it is under pressure within a body of rock and/or sediment known as an aquifer. When trapped water in an aquifer is surrounded by layers of impermeable rock or clay, which apply positive pressure to the water, it is known as an artesian aquifer. If a well were to be sunk into an artesian aquifer, water in the well-pipe would rise to a height corresponding to the point where hydrostatic equilibrium is reached.
Saltwater intrusion is the movement of saline water into freshwater aquifers, which can lead to groundwater quality degradation, including drinking water sources, and other consequences. Saltwater intrusion can naturally occur in coastal aquifers, owing to the hydraulic connection between groundwater and seawater. Because saline water has a higher mineral content than freshwater, it is denser and has a higher water pressure. As a result, saltwater can push inland beneath the freshwater. In other topologies, submarine groundwater discharge can push fresh water into saltwater.
The Delaware Geological Survey (DGS) is a scientific agency for the State of Delaware, located at the University of Delaware (UD) which conducts geologic and hydrologic research, service, and exploration. The mission of the DGS is to provide objective earth science information, advice, and service to citizens, policymakers, industries, and educational institutions of Delaware. The DGS became formally affiliated with the university's College of Earth, Ocean, and Environment (CEOE) in July 2008. Most DGS scientists have secondary faculty appointments in the College's Department of Geological Sciences.
Prabhat C Chandra is an Indian geophysicist. Since 1973, he has done extensive work in the field of hydrogeophysics, encompassing groundwater exploration, development and management with a specialization in groundwater geophysics using various geophysical methods.
Groundwater pollution occurs when pollutants are released to the ground and make their way into groundwater. This type of water pollution can also occur naturally due to the presence of a minor and unwanted constituent, contaminant, or impurity in the groundwater, in which case it is more likely referred to as contamination rather than pollution. Groundwater pollution can occur from on-site sanitation systems, landfill leachate, effluent from wastewater treatment plants, leaking sewers, petrol filling stations, hydraulic fracturing (fracking) or from over application of fertilizers in agriculture. Pollution can also occur from naturally occurring contaminants, such as arsenic or fluoride. Using polluted groundwater causes hazards to public health through poisoning or the spread of disease.
Lynn Walter Gelhar is an American civil engineer focusing in hydrology and is currently Professor Emeritus at Massachusetts Institute of Technology. He is recognized for pioneering research in stochastic subsurface hydrology, has leading research in the area of field-scale contaminant transport experiments, and has extensive experience on the hydrologic aspects of nuclear waste disposal.
Jean Marie Bahr is a hydrogeologist who examines how the physical and chemical composition of groundwater and how that controls the mass transportation of groundwater. She currently is an Emeritus Professor at the University of Wisconsin Madison in the department of geosciences.
Shirley Jean Dreiss (1949–1993) was an American scientist working in the fields of hydrology and hydrogeology. After gaining her PhD from Stanford University, she joined the faculty of the University of California at Santa Cruz, where she became Professor and Chair of the Department of Earth Sciences. She made important contributions to the understanding of water flow through karst aquifers and fluid flow in subduction zones. At the time of her early death in a car accident, she was studying the groundwater system of Mono Lake in California. She was awarded the Birdsall Distinguished Lectureship from the Geological Society of America, which was renamed the Birdsall-Dreiss Distinguished Lectureship after her death.
Kamini Singha is a Professor in the department of Geology and Geological Engineering at the Colorado School of Mines, where she works on questions related to hydrogeology.
Audrey Hucks Sawyer is an American hydrogeologist and Assistant Professor of Earth Science at Ohio State University. Her work has focused on quantifying the role of groundwater - surface water interactions in transporting nutrients, contaminants, and heat in rivers and coastal settings. Sawyer has won multiple awards, including the National Science Foundation CAREER Award in 2018 and the Kohout Early Career Award in 2016.
Groundwater in Nigeria is widely used for domestic, agricultural, and industrial supplies. The Joint Monitoring Programme for Water Supply and Sanitation estimate that in 2018 60% of the total population were dependent on groundwater point sources for their main drinking water source: 73% in rural areas and 45% in urban areas. The cities of Calabar and Port Harcourt are totally dependent on groundwater for their water supply.
Abhijit Mukherjee is an Indian professor, scientist and currently Professor of Geology and Geophysics and the School of Environmental Science and Engineering of IIT Kharagpur. He has been selected for Shanti Swarup Bhatnagar Prize for Science and Technology in 2020 in the field of Earth Atmosphere Ocean and Planetary Sciences.
Karen H. Johannesson is an American geochemist and professor in the School for the Environment at the University of Massachusetts Boston and the Intercampus Marine Sciences Graduate Program of the University of Massachusetts System. She teaches geochemistry and has expertise in environmental geochemistry, biogeochemistry, trace element speciation, geochemical modeling, chemical hydrogeology, reaction path and reactive transport modeling.
Laura J. Crossey is an American hydrologist and geochemist and Distinguished Professor of Earth and Planetary Sciences at the University of New Mexico (UNM). Crossey is part of UNM's Sustainable Water Resources Grand Challenge team, which studies water and climate in New Mexico and other arid regions. She has studied springs and groundwater in areas including the Western Desert of Egypt, Australia's Great Artesian Basin, Tibet, the Middle Rio Grande Basin and the Grand Canyon.
Coastal Hydrogeology is a branch of Hydrogeology that focuses on the movement and the chemical properties of groundwater in coastal areas. Coastal Hydrogeology studies the interaction between fresh groundwater and seawater, including seawater intrusion, sea level induced groundwater level fluctuation, submarine groundwater discharge, human activities and groundwater management in coastal areas.
Offshore freshened groundwater(OFG) is water that contains a Total Dissolved Solid (TDS) concentration lower than sea water, and which is hosted in porous sediments and rocks located in the sub-seafloor. OFG systems have been documented all over around the world and have an estimated global volume of around 1 × 106 km3. Their study is important because they may represent an unconventional source of potable water for human populations living near the coast, especially in areas where groundwater resources are scarce or facing stress
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