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Overview

EAS Faculty & Research Interest Dr. Kim Cobb

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Overview

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  1. EAS Faculty & Research Interest • Dr. Kim Cobb • Paleoclimates and isotope geochemistry. Mechanism of global climate changes in geological time using isotopes and trace metals, geochemistry of corals and speleothems, carbon and oxygen isotopes, magnetic sector and secondary ion mass spectrometry. • Dr. Jennifer Glass • Geobiology. Evolution of life on Earth, trace metal requirements in the nitrogen, carbon, and sulfur cycles, geochemical proxies, bioinformatics, metalloenzymes. • Dr. Ellery Ingall • Biogeochemistry of natural waters and sediments. Cycling of phosphorus, nitrogen and carbon in aquatic systems, redox geochemistry, organic geochemistry, nuclear magnetic resonance, synchrotron X-ray techniques. • Dr. Taka Ito • Ocean circulation, marine biogeochemical cycles, impact of climate on ocean biogeochemistry, numerical modeling, coupling biogeochemical modeling with global circulation models. • Dr. Joel Kostka • Biogeochemistry, geomicrobiology. Characterization of microbial populations involved in carbon, nitrogen, and metal cycling in sediments and terrestrial environments, microbial processes involved in the bioremediation of organic and metal contaminants, biofuels as alternative source of energy. • Dr. Jean Lynch-Stieglitz • Paleoclimate and isotope geochemistry. Interaction of the ocean and climate over the decade to tens of thousands of years, variability in ocean circulation in the geological past, geochemical paleoproxies, oxygen and carbon isotopes in carbonates from foraminifera. • Dr. Martial Taillefert • Inorganic geochemistry in aquatic systems, chemical oceanography, geomicrobiology. Interactions between chemical and biological processes at redox interfaces, cycling of trace metals and metal bioremediation, in situ measurements in sediments, analytical speciation of trace metals, dynamic biogeochemical modeling. • EAS Research Areas • Atmospheric Chemistry, Aerosols & Clouds • Paleoclimate • Planetary Science • Geochemistry • Dynamics of Weather and Climate • Geophysics • Oceanography and Climate • Remote Sensing Overview Research in the Geochemistry group focuses on low temperature and low pressure geochemistry in aquatic systems, both freshwater and marine environments. Our research objectives are to characterize and understand the biogeochemical processes that regulate the distribution of inorganic and organic compounds to determine their impact on the environment in the past, the present, and the future. Geochemical measurements are also used in geological and biological archives such as corals, deep sea sediments, and cave deposits to investigate ocean and climate history. Some of our research is field-based and includes oceanic cruises, in situ measurements in coastal and deep-sea environments, and investigations in pristine or polluted rivers, lakes, aquifers, and coastal marshes. Laboratory-based research investigates interactions between minerals, microorganisms, and dissolved chemicals to characterize the processes that mediate their dissolution and precipitation. Research Scientists Dr. Jessica Conroy Meg Grantham Jonathan Delgardio Graduate Students Jordon Beckler Keaton Belli Jacky Bracco Stacy Carolin Colin Dean Nelson W. Green Wei-Ching Hsu Morris E Jones Peter Leech HuiLin Jessica Moerman Kathleen Salome Hussein Sayani BabakShafei Anna Williams

  2. Degree Requirements • M.S. Students • Course: 30 Credit Hours • Thesis or Non-Thesis • Ph.D. Students • EAS Course: 15 Credit Hours • Minor Course: 9 Credit Hours • Academic Breadth • Comprehensive Exam • Doctoral Examination • Application Requirements • B.S. or M.S. in any field of geophysical, physical or environmental science • GPA: 3.0/4.0 & Higher • Graduate record Exam (GRE) • TOEFL (International Students) School of Earth & Atmospheric Science • Application Materials • Application Form (Online) • Personal Statement • Recommendation Letters (3) • Official Transcripts (each school) • Test Scores (GRE and/or TOEFL) Geochemistry • Related Courses • Geochemical Thermodynamics • Geochemical Kinetics • Aqueous Geochemistry • Isotope Geochemistry • Organic Geochemistry • Geomicrobiology • Biogeochemical Cycles • Oceanography • Water Quality Modeling • Earth System Modeling • Paleoclimate & Paleoceanography • Tectonics, Climate & Landscape • Environmental Field Methods • Financial Assistance • Graduate Assistantships (RA/TA) • Full Tuition Payment • National and Local Fellowships • Professional Conference • EAS Opportunities • Research field missions • State-of-the-art laboratories • Local environmental monitoring • Broad range of computing resources • Interdisciplinary seminar series Application Target January 15 Admissions: Dr. Kim Cobb kim.cobb@eas.gatech.edu Information: Kathy Plummer plummer@eas.gatech.edu

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