A5063800840- Arctic and Antarctic ice dynamics
- Cryospheric studies and observations
- Climate change and permafrost
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Hydrocarbon exploration and reservoir analysis
- Atmospheric and Environmental Gas Dynamics
- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Climate variability and models
- Geochemistry and Geologic Mapping
- Oceanographic and Atmospheric Processes
- Landslides and related hazards
- Karst Systems and Hydrogeology
- Groundwater and Isotope Geochemistry
- Silicon Effects in Agriculture
- High-pressure geophysics and materials
- Occupational Health and Performance
- Geological and Geophysical Studies Worldwide
- Toxic Organic Pollutants Impact
- Air Quality Monitoring and Forecasting
- Aquatic Ecosystems and Biodiversity
- Energy, Environment, and Transportation Policies
- Advanced Measurement and Detection Methods
Wheaton College - Massachusetts
2008-2019
Cornell University
2001-2006
Oak Ridge National Laboratory
2004
Middlebury College
2003
Geothermal activity is common at the foot of Higher Himalaya near Main Central Thrust (MCT), Nepal Himalaya. We have sampled hot springs along a 150 km stretch Himalayan front and find that they carry large fluxes CO 2 derived from metamorphic reactions. Hot spring fluids are saturated with , [DIC] 1.3 to >100 mmol kg −1 δ 13 C DIC values −13‰ +13‰ (PDB) . Analysis released by decrepitation fluid inclusions syn‐ postdeformational quartz veins indicate crustal had −15‰ +2‰ consistent...
Abstract Our understanding of past sea‐ice variability is limited by the short length satellite and instrumental records. Proxy records can extend these observations but require further development validation. We compare methanesulfonic acid (MSA) chloride (Cl – ) concentrations from a new firn core coastal West Antarctica with satellite‐derived regional concentration (SIC) in Amundsen Sea (AS) to evaluate spatial temporal correlations 2002–2010. The high accumulation rate (~39 g∙cm –2 ∙yr...
Numerous hot springs flow within the steeply incised gorges of central Nepal Himalayan front. The spring fluids have total dissolved solids (TDS) up to 7000 mg/L and Na + , K typically comprise >50% cationic charge, indicating that high‐temperature silicate alteration is dominant source alkalinity. HCO 3 − normally anion. Sr isotope ratios from hydrothermal are similar range values found in host rocks imply significant fluid‐rock interaction with local lithologies. To determine impact...
Abstract The sources and transport pathways of aerosol species in Antarctica remain uncertain, partly due to limited seasonally resolved data from the harsh environment. Here, we examine seasonal cycles major ions three high‐accumulation West Antarctic ice cores for new information regarding origin species. A method continuous acidity measurement is exploited provide a comprehensive, charge‐balance approach assessing non‐sea‐salt (nss) average nss‐anion composition 41% sulfate (SO 4 2− ),...
Research Article| November 01, 2002 Quartz control of high germanium/silicon ratios in geothermal waters Matthew J. Evans; Evans 1Department Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853, USA Search for other works by this author on: GSW Google Scholar Louis A. Derry Author Article Information Publisher: Geological Society America Received: 22 Apr Revision 19 Jul Accepted: 26 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print 0091-7613 Geology (2002) 30 (11):...
Research Article| September 01, 2001 Hydrothermal source of radiogenic Sr to Himalayan rivers Matthew J. Evans; Evans 1Department Geological Sciences, Cornell University, Ithaca, New York 14853-1504, USA Search for other works by this author on: GSW Google Scholar Louis A. Derry; Derry Suzanne P. Anderson; Anderson 2Department Earth University California, Santa Cruz, California 95064, Christian France-Lanord 3Centre des Recherches Pétrographiques et Géochimiques, BP 20, Vandouvre-les-Nancy,...
Abstract. Methanesulfonic acid (MSA; CH3SO3H) in polar ice is a unique proxy of marine primary productivity, synoptic atmospheric transport, and regional sea-ice behavior. However, MSA can be mobile within the firn matrix, post-depositional process that well known but poorly understood documented, leading to uncertainties integrity paleoclimatic signal. Here, we use compilation 22 core records from Greenland Antarctica model soluble impurity transport order comprehensively investigate...
Abstract The climate of West Antarctica is strongly influenced by remote forcing from the tropical Pacific. For example, recent surface warming over reflects atmospheric circulation changes Amundsen Sea, driven an Rossby wave response to sea temperature (SST) anomalies. Here, it demonstrated that Pacific SST anomalies also influence source and transport marine-derived aerosols Antarctic Ice Sheet. Using records four firn cores collected along coast Antarctica, relationship between...
Research Article| December 01, 2003 Supra–subduction zone extensional magmatism in Vermont and adjacent Quebec: Implications for early Paleozoic Appalachian tectonics Jonathan Kim; Kim 1Vermont Geological Survey, 103 South Main Street, Waterbury, 05671, USA Search other works by this author on: GSW Google Scholar Raymond Coish; Coish 2Geology Department, Middlebury College, Bicentennial Hall, Middlebury, 05753, Matthew Evans; Evans Gregory Dick GSA Bulletin (2003) 115 (12): 1552–1569....
Abstract Using a coastal ice core collected from Prince of Wales (POW) Icefield on Ellesmere Island, we investigate source regions sea ice‐modulated chemical species (methanesulfonic acid (MSA) and chloride (Cl − )) to POW the influence large‐scale atmospheric variability transport these marine aerosols (1979–2001). Our key findings are (1) MSA in is derived primarily productivity zone Baffin Bay Labrador Sea, with waters within North Water (NOW) polynya, (2) formation processes NOW polynya...
Abstract. Methanesulfonic acid (MSA; CH3SO3H) in polar ice is a unique proxy of marine primary productivity, synoptic atmospheric transport, and regional sea behavior. However, MSA can be mobile within the firn matrix, post-depositional process that well known but poorly understood documented, leading to uncertainties integrity paleoclimatic signal. Here, we use compilation 22 core records from Greenland Antarctica model soluble impurity transport order comprehensively investigate vertical...
Journal Article THE APPLICATION OF TEST DATA IN SELECTION AND USE GLOVES AGAINST CHEMICALS Get access P. LEINSTER, LEINSTER *Thomson Laboratories LtdMilton Keynes, U.K. Search for other works by this author on: Oxford Academic PubMed Google Scholar J. L. BONSALL, BONSALL †ICI AgrochemicalsHaslemere, M. EVANS, EVANS ‡Group Occupational Health Centre, BP International LtdGuildford, S. LEWIS The Annals of Hygiene, Volume 34, Issue 1, 1990, Pages 85–90, https://doi.org/10.1093/annhyg/34.1.85...