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  • William Gutowski | Department of Geological & Atmospheric Sciences
    J H Christensen 2010 Improved confidence in climate changeprojections of precipitation further evaluated using daily statistics from ENSEMBLES models Clim Dynamics 35 1509 1520 DOI 10 1007 s00382 009 0683 8 Gutowski W J R W Arritt S Kawazoe D M Flory E S Takle S Biner D Caya R G Jones R Laprise L R Leung L O Mearns W Moufouma Okia A M B Nunes Y Qian J O Roads L C Sloan and M A Snyder 2010 Regional Extreme Monthly Precipitation Simulated by NARCCAP RCMs J Hydrometeor 11 1373 1379 DOI 10 1175 2010JHM1297 1 Takle E S M Jha E Lu R W Arritt W J Gutowski Jr and the NARCCAP Team 2010 Streamflow in the Upper Mississippi River Basin as simulated by SWAT driven by 20C results of global climate models and NARCCAP regional climate models Meteorologische Zeitschrift 19 341 346 Francis J A J J Cassano W J Gutowski Jr L D Hinzman M M Holland M A Steele D M White and C J Vörösmarty 2009 An Arctic hydrologic system in transition Feedbacks and impacts on terrestrial marine and human life J Geophys Res 114 G04019 DOI 10 1029 2008JG000902 Mearns L O W J Gutowski R Jones L Y Leung S McGinnis A M B Nunes Y Qian 2009 A regional climate change assessment program for North America EOS 90 311 312 Pryor S C R J Barthelmie D T Young E S Takle R W Arritt D Flory W J Gutowski Jr A Nunes and J Roads 2009 Wind speed trends over the contiguous United States J Geophys Res 114 D14105 DOI 10 1029 2008JD011416 Wang S Y R R Gillies E S Takle and W J Gutowski 2009 Evaluation of precipitation in the Intermountain Region as simulated by the NARCCAP regional climate models Geophys Res Lett 36 L11704 DOI 10 1029 2009GL037930 Chen T C J D Tsay and W J Gutowski 2008 A comparison study for three polar grids J Appl Meteor Clim 47 2993 3007 DOI 10 1175 2008JAMC1746 1 Gutowski W J S S Willis J C Patton B R J Schwedler R W Arritt and E S Takle 2008 Changes in extreme cold season synoptic precipitation events under global warming Geophys Res Lett 35 L20710 DOI 10 1029 2008GL035516 Im E S W J Gutowski Jr and F Giorgi 2008 Consistent changes in twenty first century daily precipitation from regional climate simulations for Korea using two convection parameterizations Geophys Res Lett 35 L14706 DOI 10 1029 2008GL034126 Schwartz H G A C Clark G E Dickey G C Eads R E Gallamore G Giuliano W J Gutowski R H Iwasaki K H Jacob T R Karl R J Lempert L Paiewonsky S G H Philander C R Zeppie 2008 The Potential Impacts of Climate Change on U S Transportation Transportation Research Board Special Report 290 National Academy of Sciences Washington DC 218 pp CCSP Synthesis and Assessment Product 3 1 2008 Climate Models An Assessment of

    Original URL path: http://www.ge-at.iastate.edu/people/faculty/william-gutowski/ (2012-11-07)
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  • Chris Harding | Department of Geological & Atmospheric Sciences
    Computational Science Certificate University of Houston 2001 Research Interests My interests are in combining geoscience research and teaching with the emerging field of Virtual Reality Besides being a faculty member of the department of geological and atmospheric sciences I am also part of the Virtual Reality Applications Center VRAC and ISU s Human Computer Interaction HCI program which is housed at Howe Hall I am interested in building interactive geoscientific Virtual Environments that take advantage not only of the well established visual component e g large displays with stereo vision but employ touch and sound as well two perceptual mechanisms that are particularly interesting research topics within Virtual Environments Geoscientific tasks carry a special set of problems that distinguish them from other forms of scientific visualization e g medical or engineering and therefore need a special approach I have several years of practical experiences with geoscientific virtual environments I worked on the University of Houston s Virtual Environment Research Laboratory my Ph D thesis dealt with audio supported haptic touch based fault modelling of bathymetric data and I was involved in VR research at Shell and Exxon where I worked with large stereo displays virtual theaters scientific sonification and haptic

    Original URL path: http://www.ge-at.iastate.edu/people/faculty/chris-harding/ (2012-11-07)
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  • Franciszek Hasiuk | Department of Geological & Atmospheric Sciences
    B A Classics University of Iowa 2003 Research Interests Dr Hasiuk is a sedimentary geologist geochemist who is keenly interested in answering important academic and industry questions related to the Earth s sedimentary shell His specialty is limestone sedimentology stratigraphy diagenesis petrography and petrophysics but he can appreciate any sedimentary rock he is lucky enough to be holding Research areas he is actively pursuing include Carbonate paleothermometry e g Mg Ca d18O and Clumped Isotopes CO3DB The Database of Carbonate Geochemistry Diagenesis and geochemistry of fine grained sedimentary rocks Analytical models of porous media High resolution geochemical techniques in carbonates Industrial uses and production of carbonates Teaching Franek is committed to teaching the fundamental skills of rock description and interpretation GEOL 102 History of the Earth GEOL 368 Stratigraphy and Sedimentation Recent Refereed Publications Hasiuk Franciszek J Lohmann KC 2010 Application of Calcite Mg Partitioning Functions to the Reconstruction of Paleocean Mg Ca Geochimica et Cosmochimica Acta vol 74 no 23 pp 6751 6763 D Hondt S Spivack AJ Pockalny R Fischer J Kallmeyer J Ferdelman T Abrams L Smith DC Graham D Hasiuk Franciszek J Schrum H Stancin A 2009 Subseafloor Sedimentary Life in the South Pacific Gyre Proceedings

    Original URL path: http://www.ge-at.iastate.edu/people/faculty/franciszek-hasiuk/ (2012-11-07)
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  • Neal Iverson | Department of Geological & Atmospheric Sciences
    O D over a rigid or deformable bed Modeling of bedrock erosion by glaciers Field studies of bedrock erosion by glaciers in Norway and the Canadian Rockies Field studies of glacier sliding and seismicity beneath Engabreen an outlet glacier of the Svartisen Ice Cap in N Norway with unusual human access to the bed see this link to the New York Times article that describes some of our earlier research there Field and modeling studies of ice and sediment dynamics near the basal thermal transition of Storglaciären a polythermal glacier in N Sweden with research infrastructure provided by the Tarfala Research Station of Stockholm University This research is funded primarily by the National Science Foundation through grants awarded by Earth Sciences and Polar Programs Most of these projects include student research opportunities Enquiries from prospective students are very welcome Recent Field Sites Ring Shear Devices Teaching I teach undergraduate and graduate level courses in geomorphology Geol 479 579 Surficial Processes and glacial geology Geol 474 574 Glacial and Quaternary Geology Typically more than half of students enrolled in these courses are majors in environmental science civil engineering agronomy or anthropology Field trips that explore the landforms and Quaternary sediments of Iowa Minnesota and Wisconsin are routine and important elements of these courses Recent Publications Moore P L N R Iverson K T Uno M P Dettinger K A Brugger and P Jansson in press Entrainment and emplacement of englacial debris bands near the margin of Storglaciären Sweden Boreas Iverson N R 2012 A theory of glacial quarrying for landscape evolution models Geology doi 10 1130 G33079 1 Hooyer T S D Cohen and N R Iverson 2012 Control of glacial quarrying by bedrock joints Geomorphology 153 154 91 101 Byers J D Cohen and N R Iverson 2012 Subglacial clast

    Original URL path: http://www.ge-at.iastate.edu/people/faculty/neal-iverson/ (2012-11-07)
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  • Carl Jacobson | Department of Geological & Atmospheric Sciences
    basin of southern California and northern Baja California In addition to the above studies which focus on the continental margin we have also engaged in various studies of the retroarc region including provenance and thermochronology analyses of the McCoy Mountains Formation and Maria fold and thrust belt of the Blythe Quartzsite area of California and Arizona as well as well potential equivalents in the Caborca area of Sonora Mexico The latter units reflect a phase of continental extension in the latest Jurassic to Early Cretaceous followed by compression in the Late Cretaceous I am now also initiating studies of faults and fractures related to the Laramide folds in the vicinity of our field camp in Wyoming These features have implications for both the migration and recovery of petroleum Teaching I recently finished a 10 year term as department chair and during which time I taught only undergraduate structural geology field camp and an occasional informal seminar class Additional classes now that I am no longer chair are yet to be determined Selected Publications Riggs N R Barth A P González León C Jacobson C E Wooden J L Howell E R and Walker J D 2012 Provenance of Upper Triassic strata in southwestern North America as suggested by isotopic analysis and chemistry of zircon crystals in Rasbury E T Hemming S and Riggs N eds Mineralogical and Geochemical Approaches to Provenance Geological Society of America Special Paper 487 p 13 36 doi 10 1130 2012 2487 02 Jacobson C E Grove M Pedrick J N Barth A P Marsaglia K M Gehrels G E and Nourse J A 2011 Late Cretaceous early Cenozoic tectonic evolution of the southern California margin inferred from provenance of trench and forearc sediments Geological Society of America Bulletin v 123 p 485 506 doi 10 1130 B30238 1 Jacques Ayala C Barth A P Wooden J L and Jacobson C E 2009 Provenance and U Pb geochronology of the Upper Cretaceous El Chanate Group northwest Sonora Mexico and its tectonic significance International Geology Review v 51 p 1051 1077 Barth A P Anderson J L Jacobson C E Paterson S R and Wooden J L 2008 Magmatism and tectonics in a tilted crustal section through a continental arc eastern Transverse Ranges and southern Mojave Desert in Duebendorfer E M and Smith E I eds Field guide to plutons volcanoes reefs dinosaurs and possible glaciations in selected areas of Arizona California and Nevada Geological Society of America Field Guide 11 p 101 117 Grove M Bebout G E Jacobson C E Barth A P Kimbrough D L King R L Zou H Lovera O M Mahoney B J and Gehrels G G 2008 The Catalina Schist Evidence for middle Cretaceous subduction erosion of southwestern North America in Draut A E Clift P D and Scholl D W eds Formation and applications of the sedimentary record in arc collision zones Geological Society of America Special Paper 436 Jacobson C E Grove M Vućić A Pedrick J N

    Original URL path: http://www.ge-at.iastate.edu/people/faculty/carl-jacobson/ (2012-11-07)
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  • William Simpkins | Department of Geological & Atmospheric Sciences
    in an alluvial aquifer PI W W Simpkins Funding from the Center for Health Effects of Environmental Contamination CHEEC at University of Iowa A technology rich field and internet based educational laboratory for the innovative study of groundwater and surface water on the ISU campus Co PIs W W Simpkins C Cervato and K Franz Funded by the ISU College of Liberal Arts and Sciences Teaching Geol 411 511 Hydrogeology Geol 409 509 Field Methods in Hydrogeology Geol 414 514 Applied Groundwater Flow Modeling Env S 324 Energy and the Environment Selected Refereed Publications Simpkins W W A D Wanamaker and K A Jungbluth In review Effect of Global Change on Stable Isotopes in Precipitation since 1992 A Cautionary Tale for Paleoenvironmental Reconstruction Submitted to the Journal of Global and Planetary Change November 2012 Marquardt K E M L Rankin and W W Simpkins In review Improving recycling at Iowa State University with an existing 83 diversion rate Submitted to Sustainability The Journal of Record Osmond D L P Gassman K Schilling C Wolter C L Kling M Helmers T Isenhart W Simpkins T Moorman M Tomer S Rabotyagov M Jha D L K Hoag D W Meals and M Arabi 2012 Chapter 11 Walnut Creek and Squaw Creek Watersheds Iowa National Institute of Food and Agriculture Conservation Effects Assessment Project in Osmond D L D W Meals D LK Hoag and M Arabi eds 2012 How to Build Better Agricultural Conservation Programs to Protect Water Quality The National Institute of Food and Agriculture Conservation Effects Assessment Project Experience Ankeny IA Soil and Water Conservation Society p 201 220 Schultz R C T M Isenhart J P Colletti W W Simpkins R P Uddawatta and P L Schultz 2009 Riparian and Upland Buffer Practices in H E Garrett ed North American Agroforestry An Integrated Science and Practice 2nd Ed Madison American Society of Agronomy p 163 218 Helmers M J T M Isenhart C L Kling T M Moorman W W Simpkins and Mark Tomer 2007 Water quality in Agriculture 101 Heterogeneity of pollutants practices and programs Choices Schilling K E M Tomer P E Gassman C L Kling T M Isenhart T B Moorman W W Simpkins C F Wolter 2007 A tale of three watersheds non point source pollution and conservation practices across Iowa Choices Simpkins W W 2006 A multi scale investigation of ground water flow at Clear Lake Iowa Ground Water 44 1 35 46 Helmke M F W W Simpkins and R Horton 2005 Simulating conservative tracers in fractured till under realistic timescales Ground Water 43 6 877 889 Helmke M F W W Simpkins and R Horton 2005 Fracture controlled transport of nitrate and atrazine in four Iowa till units J Environ Qual 34 227 236 Schultz R C T M Isenhart W W Simpkins and J P Colletti 2004 Riparian forest buffers in agroecosystems lessons learned from the Bear Creek Watershed central Iowa USA Agroforestry Systems 61 35 50 Helmke M F W

    Original URL path: http://www.ge-at.iastate.edu/people/faculty/william-simpkins/ (2012-11-07)
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  • Paul Spry | Department of Geological & Atmospheric Sciences
    the geochemistry of metallic and non metallic deposits He is particularly interested in the petrological mineralogical structural geochronological stable isotope and fluid inclusion characteristics of epithermal and mesothermal gold deposits as well as the effects of metamorphism on massive sulfide deposits Current research projects include stable tellurium isotopes of tellurides in gold silver telluride deposits the origin of gold telluride deposits in Greece and Fiji sulfidation oxidation relations associated with metamorphosed ores at the Angas Pb Zn Ag deposit South Australia the origin of meta exhalites associated with metamorphosed massive sulfides in the southern Curnamona Province Australia including the Broken Hill Pb Zn Ag deposit the origin of nodular sillimanite rocks and their genetic relationship to metamorphosed massive sulfide deposits and the crystallographic characterization of precious metal sulfides and sulfosalts Research Projects Teaching GEOL 105X Gems and Gemstones GEOL 316X 542 Optical Mineralogy GEOL 365 Igneous and Metamorphic Petrology Geol 420X 520X Mineral Resources GEOL 507 Midwestern Geology Field Trip Course Descriptions Recent Refereed Publications Bonsall T A Spry P G Voudouris P St Seymour K Tombros S and Melfos V 2011 The geochemistry of carbonate replacement Pb Zn Ag mineralization in the Lavrion district Attica Greece Fluid inclusion stable isotope and rare earth element studies Economic Geology v 106 619 651 Voudouris P Spry P G Sakellaris G A and Mavrogonatos 2011 A cervelleite like mineral and other Ag Cu Te S minerals Ag2CuTeS and Ag Cu 2TeS in gold bearing veins in metamorphic rocks of the Cycladic Blueschist Unit Kallianou Evia Island Greece Mineralogy and Petrology v 101 p 169 183 Fornadel A P Spry P G Melfos V Vavelidis M and Voudouris P Ch 2011 Is the Palea Kavala Bi Te Pb Sb Au district northeastern Greece a reduced intrusion related system Ore Geology Reviews v 39

    Original URL path: http://www.ge-at.iastate.edu/people/faculty/paul-spry/ (2012-11-07)
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  • Alan Wanamaker | Department of Geological & Atmospheric Sciences
    Jr Weidman C Heinemeier J Reimer P J Butler P G Witbaard R and Richardson C A 2012 The marine radiocarbon bomb pulse across the temperate North Atlantic a compilation of Δ14C time histories from Arctica islandica growth increments Radiocarbon 54 2 Wanamaker A D Jr Butler P G Scourse J D Heinemeier J Eiríksson J Knudsen K L and Richardson C A 2012 Surface changes in the North Atlantic meridional overturning circulation during the last millennium Nature Communications 3 899 doi 10 1038 ncomms1901 OPEN ACCESS 2011 Butler P G Wanamaker A D Jr Scourse J D Richardson C A and Reynolds D R 2011 The stability of shell δ13C with respect to biological age in mature specimens of the long lived bivalve Arctica islandica Palaeogeography Palaeclimatology Palaeoecology 302 doi 10 1016 j palaeo 2010 03 038 Halfar J Williams B Hetzinger S Steneck R S Lebednik P Winsborough C Omar A and Wanamaker A D Jr 2011 225 years of Bering Sea climate and ecosystem dynamics revealed by coralline algal growth increment widths Geology 39 579 582 doi 10 1130 G31996 1 Schöne B R Wanamaker A D Jr Fiebig J Thébault J and Kreutz K J 2011 Annually resolved δ13Cshell chronologies of long lived bivalve mollusks Arctica islandica reveal oceanic carbon dynamics in the temperate North Atlantic during recent centuries Palaeogeography Palaeclimatology Palaeoecology 302 doi 10 1016 j palaeo 2010 02 002 Wanamaker A D Jr S Hetzinger and J Halfar 2011 Reconstructing mid to high latitude marine climate and ocean variability using bivalves coralline algae and marine sediment cores from the northern hemisphere Palaeogeography Palaeoclimatology Palaeoecology 302 doi 10 1016 j palaeo 2010 12 024 Wanamaker A D Jr Kreutz K J Schöne B R and Introne D S 2011 Gulf of Maine shells reveal changes in seawater temperature seasonality during the Medieval Climate Anomaly and the Little Ice Age Palaeogeography Palaeclimatology Palaeoecology 302 doi 10 1016 j palaeo 2010 06 005 2010 Butler P G Richardson C A Scourse J D Wanamaker A D Jr Shammon T M and Bennell J D 2010 Marine climate in the Irish Sea analysis of a 489 year marine master chronology derived from growth increments in the shell of the clam Arctica islandica Quaternary Science Reviews 29 doi 10 1016 j quascirev 2009 07 010 2009 Butler P G Scourse J D Richardson C A Wanamaker A D Jr Bryant C L and Bennell J D 2009 Continuous marine radiocarbon reservoir calibration and the 13C Suess effect in the Irish Sea results from the first absolutely dated multi centennial shell based marine master chronology Earth and Planetary Science Letters 279 doi 10 1016 j epsl 2008 12 043 Butler P G Richardson C A Scourse J D Witbaard R Schöne B R Fraser N M Wanamaker A D Jr Bryant C L Harris I and Robertson I 2009 Accurate increment identification and the spatial extent of the common signal in five Arctica islandica chronologies from the Fladen Ground northern

    Original URL path: http://www.ge-at.iastate.edu/people/faculty/alan-wanamaker/ (2012-11-07)
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