Rob Striegl
Rob Striegl is an Emeritus Research Hydrologist with the USGS Water Resources Mission Area.
Professional Studies/Experience
I am a Research Aquatic Biogeochemist / Hydrologist located in Boulder, Colorado. My research focuses on the role of inland waters in the global carbon cycle and on hydrologic, climatic, and disturbance controls on the biogeochemical cycling, sequestration, transport, and surface-atmosphere exchange of aquatic carbon. Investigations conducted by me and my research group address a broad range of field, laboratory and modeling studies, including the transport of inorganic and organic carbon by surface and subsurface waters; the production, consumption, and atmospheric exchange of carbon dioxide and methane by streams, rivers, lakes, reservoirs, and soils; the effects of climate warming, permafrost thaw, and other disturbances on the carbon cycle of subarctic and boreal regions; and extrapolation of inland waters carbon biogeochemical processes and rates of carbon exchange from site to regional, continental, and global scales. I lead USGS LandCarbon investigations of Ecosystem Carbon Sequestration and Greenhouse Gas Exchange by Inland Waters of the USA and am also the Principal Investigator of the NASA Arctic-Boreal Vulnerability Experiment (ABoVE) project "Aquatic Vulnerabilites of Inland Waters and the Aquatic Carbon Cycle to Changing Permafrost and Climate across Boreal North America".
Professional societies/affiliations/committees/editorial boards
- Carbon Cycle Scientific Steering Group,
- U.S. Carbon Cycle Science Program,
- U.S. Global Change Research Program
- Associate Editor, Journal of Geophysical Research - Biogeosciences, American Geophysical Union
Education and Certifications
Education
PhD: University of Wisconsin - Madison; Oceanography and Limnology
MSc: Univeristy of Illinois - Urbana; Biology / Aquatic Ecology
BSc: Western Illinois Univeristy - Macomb; Zoology
Science and Products
Tritium, deuterium, and oxygen-18 in water collected from unsaturated sediments near a low-level radioactive-waste burial site south of Beatty, Nevada
A comparison of six methods for measuring soil-surface carbon dioxide fluxes
Factors affecting tritium and 14carbon distributions in the unsaturated zone near the low-level radioactive-waste burial site south of Beatty, Nevada
Numerical evaluation of static-chamber measurements of soil-atmospheric gas exchange--Identification of physical processes
Potential methane emission from north-temperate lakes following ice melt
Adsorption of sulfur hexafluoride onto crushed tuffs from the Yucca Mountain area, Nye County, Nevada
Tritium and radioactive carbon (14C) analyses of gas collected from unsaturated sediments next to a low-level radioactive-waste burial site south of Beatty, Nevada, April 1994 and July 1995
Hydrologic research in the Shingobee River headwaters area, Minnesota
Diffusional limits to the consumption of atmospheric methane by soils
Consumption of atmospheric methane by desert soils
Effects of low-level radioactive-waste disposal on water chemistry in the unsaturated zone at a site near Sheffield, Illinois, 1982-84
Effects of low-level radioactive-waste disposal on water chemistry in the unsaturated zone at a site near Sheffield, Illinois, 1982-84
Science and Products
- Science
- Data
- Multimedia
- Publications
Filter Total Items: 142
Tritium, deuterium, and oxygen-18 in water collected from unsaturated sediments near a low-level radioactive-waste burial site south of Beatty, Nevada
Pore water was extracted in March 1996 from cores collected from test holes UZB-1 and UZB-2 drilled November 1992 and September 1993, respectively, in the Amargosa Desert south of Beatty, Nevada. The test holes are part of a study to determine factors affecting water and gas movement through unsaturated sediments. The holes are about 100 meters south of the southwest corner of the fence enclosingAuthorsDavid E. Prudic, David A. Stonestrom, Robert G. StrieglA comparison of six methods for measuring soil-surface carbon dioxide fluxes
Measurements of soil-surface CO2 fluxes are important for characterizing the carbon budget of boreal forests because these fluxes can be the second largest component of the budget. Several methods for measuring soil-surface CO2 fluxes are available: (1) closed-dynamic-chamber systems, (2) closed-static-chamber systems, (3) open-chamber systems, and (4) eddy covariance systems. This paper presentsAuthorsJ.M. Norman, C.J. Kucharik, S.T. Gower, D. D. Baldocchi, P.M. Crill, M. Rayment, K. Savage, Robert G. StrieglFactors affecting tritium and 14carbon distributions in the unsaturated zone near the low-level radioactive-waste burial site south of Beatty, Nevada
Interpretations of the distributions of tritiated water vapor (HTOV) and 14carbon dioxide gas (14CO2) concentrations in the unsaturated zone adjacent to the low-level radioactive-waste burial site south of Beatty, Nevada, suggest that observed concentrations of 14CO2 could be explained by either diffusive or advective transport of the radioactive gas from the site.The distribution of HTOV cannot bAuthorsRobert G. Striegl, David E. Prudic, J. S. Duval, R. W. Healy, E. R. Landa, D.W. Pollock, D.C. Thorstenson, R.P. WeeksNumerical evaluation of static-chamber measurements of soil-atmospheric gas exchange--Identification of physical processes
The exchange of gases between soil and atmosphere is an important process that affects atmospheric chemistry and therefore climate. The static-chamber method is the most commonly used technique for estimating the rate of that exchange. We examined the method under hypothetical field conditions where diffusion was the only mechanism for gas transport and the atmosphere outside the chamber was maintAuthorsRichard W. Healy, Robert G. Striegl, Thomas F. Russell, Gordon L. Hutchinson, Gerald P. LivingstonPotential methane emission from north-temperate lakes following ice melt
Methane, a radiatively active 'greenhouse' gas, is emitted from lakes to the atmosphere throughout the open-water season. However, annual lake CH4 emissions calculated solely from open-water measurements that exclude the time of spring ice melt may substantially underestimate the lake CH4 source strength. We estimated potential spring CH4 emission at the time of ice melt for 19 lakes in northern MAuthorsC.M. Michmerhuizen, Robert G. Striegl, M.E. McDonaldAdsorption of sulfur hexafluoride onto crushed tuffs from the Yucca Mountain area, Nye County, Nevada
No abstract available.AuthorsGordon W. Rattray, Robert G. Striegl, In C. YangTritium and radioactive carbon (14C) analyses of gas collected from unsaturated sediments next to a low-level radioactive-waste burial site south of Beatty, Nevada, April 1994 and July 1995
Tritium activities in water vapor and radioactive carbon (14C) activities in carbon dioxide were determined in gas samples pumped from small-diameter air ports installed in a test hole within the unsaturated sediments next to a commercial burial site for low-level radioactive waste south of Beatty, Nevada. In April 1994, gas samples were collected from test hole UZB-2, which was drilled about 350AuthorsDavid E. Prudic, Robert G. StrieglHydrologic research in the Shingobee River headwaters area, Minnesota
No abstract available.AuthorsD. O. Rosenberry, J. W. LaBaugh, T.M. McConnaughey, Robert G. Striegl, T. C. WinterDiffusional limits to the consumption of atmospheric methane by soils
Net transport of atmospheric gases into and out of soil systems is primarily controlled by diffusion along gas partial pressure gradients. Gas fluxes between soil and the atmosphere can therefore be estimated by a generalization of the equation for ordinary gaseous diffusion in porous unsaturated media. Consumption of CH4 by methylotrophic bacteria in the top several centimeters of soil causes theAuthorsRobert G. StrieglConsumption of atmospheric methane by desert soils
ATMOSPHERIC concentrations of methane, a greenhouse gas, are increasing at a rate of about 1% yr-1 (refs 1-4). Oxidation by methylotrophic bacteria in soil is the largest terrestrial sink for atmospheric CH4, and is estimated to consume about 30?? 1012 g CH4 yr-1 (refs 4-6). Spatial and temporal variability in the rate of soil CH4 consumption are incompletely understood6-19, as are the apparent inAuthorsRobert G. Striegl, T.A. McConnaughey, D.C. Thorstenson, E.P. Weeks, J.C. WoodwardEffects of low-level radioactive-waste disposal on water chemistry in the unsaturated zone at a site near Sheffield, Illinois, 1982-84
A 1982-84 field study defined the chemistry of water collected from the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Bureau County, Ill. Chemical data were evaluated to determine the principal, naturally occurring geochemical reactions in the unsaturated zone and to evaluate waste-induced effects on pore-water chemistry. Samples of precipitation, unsaturated-AuthorsC.A. Peters, Robert G. Striegl, P. C. Mills, R. W. HealyEffects of low-level radioactive-waste disposal on water chemistry in the unsaturated zone at a site near Sheffield, Illinois, 1982-84
A 1982-84 field study defined the chemistry of water collected from the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Bureau County, Illinois. Chemical data were evaluated to determine the principal naturally occurring geochemical reactions in the unsaturated zone and to evaluate waste-induced effects on pore-water chemistry. Samples of precipitation, unsaturatedAuthorsC.A. Peters, Robert G. Striegl, P. C. Mills, R. W. Healy