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Todd Sowers
Researcher at Pennsylvania State University
Publications - 75
Citations - 12410
Todd Sowers is an academic researcher from Pennsylvania State University. The author has contributed to research in topics: Ice core & Glacial period. The author has an hindex of 45, co-authored 74 publications receiving 11454 citations. Previous affiliations of Todd Sowers include Lamont–Doherty Earth Observatory & University of Rhode Island.
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Evaluating a groundwater supply contamination incident attributed to Marcellus Shale gas development
Garth T. Llewellyn,Frank L. Dorman,Jessica L. Westland,David Yoxtheimer,Paul L. Grieve,Todd Sowers,E. Humston-Fulmer,Susan L. Brantley +7 more
TL;DR: A case where Marcellus Shale gas wells in Pennsylvania caused inundation of natural gas and foam in initially potable groundwater used by several households is investigated, and an unresolved complex mixture of organic compounds was identified in the aquifer.
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Age scale of the air in the summit ice: Implication for glacial-interglacial temperature change
TL;DR: In this article, the authors used a dynamic firn densification model to calculate the firn-ice transition depth and the age of the ice at this depth and an air diffusion model to determine the air at the transition.
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Gravitational separation of gases and isotopes in polar ice caps.
TL;DR: These two models for isotopic and elemental fractionation provide a basis for understanding the initial enrichments of carbon-13 and oxygen-18 in trapped CO2, CH4, and O2 in ice cores, which must be known in order to decipher ancient atmospheric isotopic ratios.
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A 135,000-year Vostok-Specmap Common temporal framework
Todd Sowers,Michael L. Bender,Laurent Labeyrie,Doug Martinson,Jean Jouzel,Dominique Raynaud,Jean Jacques Pichon,Y. S. Korotkevich +7 more
TL;DR: In this article, a common temporal framework for comparing phase relationships between atmospheric records (from ice cores) and oceanographic records constructed from deep-sea cores has been proposed for comparing the Vostok and marine chronologies.
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The WAIS Divide deep ice core WD2014 chronology – Part 1: Methane synchronization (68–31 ka BP) and the gas age–ice age difference
Christo Buizert,Kurt M. Cuffey,Jeffrey P. Severinghaus,Daniel Baggenstos,Tyler J. Fudge,Eric J. Steig,Bradley R. Markle,Mai Winstrup,Rachael H. Rhodes,Edward J. Brook,Todd Sowers,Gary D. Clow,Hai Cheng,Hai Cheng,Richard Lawrence Edwards,Michael Sigl,Joseph R. McConnell,Kendrick C. Taylor +17 more
TL;DR: In this paper, the West Antarctic Ice Sheet Divide (WAIS Divide, WD) ice core was used to calculate the gas age-ice age difference (Δage) using a combination of firn densification modeling, ice-flow modeling, and a data set of δ15N-N2, a proxy for past firn column thickness.