Allen C. Gellis
US Geological Survey, Baltimore, MD
Activity
2023
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RANKING BASINS ACROSS THE CONTIGUOUS U.S. TO DETERMINE WHERE SEDIMENT IS LIKELY A CONCERN: HOTSPOTS AND IMPORTANT CONSIDERATIONS FOR ENVIRONMENTAL JUSTICE
T244 Sources, Sinks, Transport, and Storage of Sediment in Fluvial Systems (Posters)Wednesday, 18 October 20238:00 AM - 5:30 PMHall B
2020
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SOME INSIGHTS INTO PARTICLE SURFACE ION-EXCHANGE REACTIONS WITH FALLOUT RADIONUCLIDES
4 Radionuclides: Biogeochemistry, Transport, and Geological Applications IFriday, 20 March 20208:00 AM - 12:00 PMRegency Ballroom A
2019
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SENSITIVITY OF FLUVIAL SOURCE CONTRIBUTIONS IN A MIXED LAND-USE ENVIRONMENT: OTTER CREEK, FORT KNOX, KENTUCKY
18 D7. Hydrogeology (Posters)Tuesday, 26 March 20198:30 AM - 5:45 PMBig Basin/Kaw Nation Rooms
2018
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SEDIMENT DYNAMICS IN AN URBAN WATERSHED USING SHORT-LIVED RADIONUCLIDES, DEAD RUN, BALTIMORE, MARYLAND, USA
T5 Human Alterations to Landscape ConnectivitySunday, 4 November 20188:00 AM - 12:00 PMRoom 141
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SENSITIVITY OF FLUVIAL SOURCE CONTRIBUTIONS IN A MIXED LAND-USE ENVIRONMENT: OTTER CREEK, FORT KNOX, KENTUCKY
T5 Human Alterations to Landscape ConnectivitySunday, 4 November 20188:00 AM - 12:00 PMRoom 141
2017
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THE SOURCES AND AGES OF FINE-GRAINED SEDIMENT USING ELEMENTAL ANALYSIS AND FALLOUT RADIONUCLIDES FOR AN AGRICULTURAL STREAM, WALNUT CREEK, IOWA
T339 Advances and Challenges in Quantifying Sediment Budgets for River SystemsWednesday, 25 October 20171:30 PM - 5:30 PMChelan 4
2015
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GEOMORPHIC PROCESSES RESPONSIBLE FOR DECADAL SCALE ARROYO CHANGES, RIO PUERCO, NEW MEXICO
T240 Soil to Sediment—From Geologic to Modern Time Scales: A Session to Honor the Work of Milan PavichTuesday, 3 November 20151:30 PM - 5:30 PMRoom 331/332
2014
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SEDIMENT FINGERPRINTING FOR IDENTIFICATION OF SOURCES OF FINE-GRAINED CHANNEL DEPOSITS IN SMITH CREEK VA, 2012-2014
T274 Progress and Challenges in Developing Tools and Approaches Used in Sediment BudgetsWednesday, 22 October 20148:00 AM - 12:00 PM208/209
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THE BIG SPRING RUN RESTORATION EXPERIMENT: LONG-TERM MONITORING OF SEDIMENT SOURCES AND BUDGETS IN A 1ST ORDER PIEDMONT STREAM
47 Origin and Evolution of the Appalachian Critical Zone. II. Anthropogenic Sediments and Their Impacts on Aquatic EcosystemsMonday, 24 March 20141:30 PM - 3:15 PMCommonwealth Salons 1-2
2011
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AGRICULTURE RATES OF EROSION IN THE CHESAPEAKE BAY WATERSHED
T181 Water and Sediment Dynamics in Agricultural Landscapes: Toward Prediction of Watershed Sediment Yield (Posters)Tuesday, 11 October 20119:00 AM - 6:00 PMHall C
2009
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SOURCES OF SEDIMENT IN THE CURRENT ARROYO CYCLE USING A SEDIMENT BUDGET FOR TWO SUBBASINS OF THE RIO PUERCO, NEW MEXICO
T81 Alluvial Records: Numerical Dating and Archives of Climatic, Environmental, and Neotectonic ChangeMonday, 19 October 20098:00 AM - 12:00 PMB114/115
2008
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Sources, Transport, and Storage of Sediments at Selected Sites in the Chesapeake Bay Watershed
T123 Sediment in Fluvial Systems: Production, Transport, and Storage at the Watershed Scale ISunday, 5 October 20088:00 AM - 12:00 PM
2006
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HIGH EROSION RATES IN EARLY AMERICA ESTIMATED FROM WIDESPREAD SEDIMENT TRAPPING IN THOUSANDS OF 18TH-20TH CENTURY MILL DAM RESERVOIRS, APPALACHIAN PIEDMONT, USA
65 Erosion: Processes, Rates, and New Measuring TechniquesMonday, 23 October 20068:00 AM - 12:00 PM
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SEDIMENT SOURCES AND TRANSPORT IN THE CHESAPEAKE BAY WATERSHED
T19 Sources, Transport, Storage, and Delivery of Sediment in the Chesapeake Bay WatershedSunday, 22 October 20068:00 AM - 12:00 PM
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REMOTE SENSING OF LAND USE/COVER FACTORS INFLUENCING SOIL EROSION IN THE LITTLE CONESTOGA WATERSHED, LANCASTER COUNTY, PENNSYLVANIA
T19 Sources, Transport, Storage, and Delivery of Sediment in the Chesapeake Bay WatershedSunday, 22 October 20068:00 AM - 12:00 PM
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QUANTIFYING FINE SEDIMENT SOURCES IN THE NORTHEAST BRANCH OF THE ANACOSTIA RIVER USING TRACE ELEMENTS AND RADIONUCLIDES
T19 Sources, Transport, Storage, and Delivery of Sediment in the Chesapeake Bay WatershedSunday, 22 October 20068:00 AM - 12:00 PM
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SUSPENDED-SEDIMENT YIELDS IN THE CHESAPEAKE BAY WATERSHED (1952-2001)
39 Rates and Processes of Appalachian ErosionWednesday, 22 March 20068:00 AM - 12:00 PM
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THE GREAT SEDIMENT EXPERIMENT: POST-SETTLEMENT LAND USE, EROSION RATES AND THE LEGACY OF SEDIMENT STORAGE IN THE MID-ATLANTIC REGION OF NORTH AMERICA
39 Rates and Processes of Appalachian ErosionWednesday, 22 March 20068:00 AM - 12:00 PM
2005
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DETERMINATION OF SPATIAL PATTERNS OF SEDIMENT STORAGE AND TRANSPORT IN VALLEY CREEK, VALLEY FORGE NATIONAL HISTORICAL PARK
T221 Geological Monitoring in National ParksWednesday, 19 October 20058:00 AM - 10:00 AM
2004
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SEDIMENT YIELDS AND SOURCES IN SELECTED PARTS OF THE CHESAPEAKE BAY WATERSHED
55 New Directions in Appalachian Geomorphology (Posters)Friday, 26 March 20041:00 PM - 5:00 PM
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EROSION OF THE SUSQUEHANNA RIVER BASIN: ASSESSING RELATIONS BETWEEN 10BE-DERIVED EROSION RATES AND BASIN CHARACTERISTICS
35 Geomorphic Process Rates on the Passive MarginFriday, 26 March 20048:00 AM - 12:00 PM
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BUILDING A GEOSPATIAL/TEMPORAL DATABASE FOR ASSESSING SEDIMENT EROSION IN THE SUSQUEHANNA WATERSHED: CONTRIBUTIONS OF ASTER, LANDSAT-7 ETM AND ALI IMAGERY
19 GIS and IT Advancements in the Geosciences IIThursday, 25 March 20041:00 PM - 5:00 PM
2002
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SUSPENDED-SEDIMENT CHARACTERISTICS IN THREE HUMID TROPICAL WATERSHEDS OF CONTRASTING LAND USE, PUERTO RICO
T233 Watershed Processes Within Tropical Montane CatchmentsWednesday, 30 October 20021:30 PM - 5:30 PM
2001
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MODERN COMPARED TO GEOLOGIC RATES OF EROSION IN ARROYO CHAVEZ, RIO PUERCO BASIN, NEW MEXICO
T121 Erosion of Non-Lithified Sediments; Observations and Models from Millimeter to Hillslope ScalesWednesday, 7 November 20018:00 AM - 12:00 PM
Date Unknown
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SEDIMENT BUDGETS FOR TWO SEMI-ARID WATERSHEDS, RIO PUERCO BASIN, NEW MEXICO
T26 Arroyo Processes and Histories (Posters)
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RECENT GEOMORPHIC CHANGE IN THE RIO PUERCO ARROYO OF NORTHERN NEW MEXICO, U.S.A
T26 Arroyo Processes and Histories (Posters)
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SEDIMENT FINGERPRINTING: A VALUABLE GEOMORPHIC AND MANAGEMENT TOOL
22 Geomorphology (Posters)
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EROSION OF THE RIO PUERCO BASIN, NEW MEXICO – FIRST COSMOGENIC ANALYSIS OF SEDIMENTS FROM THE DRAINAGE NETWORK OF A LARGE WATERSHED
133 Quaternary Geology/Geomorphology (Posters) I
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RATES AND SCALES OF SEDIMENT PRODUCTION IN THE RIO PUERCO BASIN, NEW MEXICO
T26 Arroyo Processes and Histories (Posters)