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United States Forest Disturbance Trends Observed Using Landsat Time Series

Creator:: Masek, Jeffrey G., Goward, Samuel N., Kennedy, Robert E., Cohen, Warren B., Moisen, Gretchen G., Schleeweis, Karen, and Huang, Chengquan
Abstract:: Disturbance events strongly affect the composition, structure, and function of forest ecosystems; however, existing US land management inventories were not designed to monitor disturbance. To begin addressing this gap, the North American Forest Dynamics (NAFD) project has examined a geographic sample of 50 Landsat satellite image time series to assess...
Resource Type:: Article
Full Text:: p4 7r 27 p4 8r 27 p4 5r 29 p4 7r 28 M il li on s H A Figure 4. Per-scene

A nanoscale pn junction in series with tunable Schottky barriers

Creator:: Aspitarte, Lee, McCulley, Daniel R., and Minot, Ethan D.
Abstract:: PN junctions in nanoscale materials are of interest for a range of technologies including photodetectors, solar cells, and light-emitting diodes. However, Schottky barriers at the interface between metal contacts and the nanomaterial are often unavoidable. The effect of metal-semiconductor interfaces on the behavior of nanoscale diodes must be understood, both...
Resource Type:: Article
Full Text:: P.L. McEuen, Phys. Rev. Lett. 90, 156401 (2003). 28 M. Huang, Y. Wu, B. Chandra, H. Yan, Y. Shan

Ocean wavenumber estimation from wave-resolving time series imagery

Creator:: Plant, Nathaniel G., Holland, K. Todd, and Haller, Merrick C.
Abstract:: We review several approaches that have been used to estimate ocean surface gravity wavenumbers from wave-resolving remotely sensed image sequences. Two fundamentally different approaches that utilize these data exist. A power spectral density approach identifies wavenumbers where image intensity variance is maximized. Alternatively, a cross-spectral correlation approach identifies wavenumbers where...
Resource Type:: Article
Full Text:: approximately 20:00 GMT, the sample cross-spectral correlation (4) was computed at a series of frequencies

An autonomous, bottom-transecting vehicle for making long time-series measurements of sediment community oxygen consumption to abyssal depths

Creator:: Smith, K. L., Jr., Glatts, R. C., Baldwin, R. J., Beaulieu, S. E., Uhlman, A. H., Horn, R. C., and Reimers, Clare E.
Abstract:: We have developed and successfully collected data with a unique, bottom-transecting vehicle (ROVER) that permits the first long time-series measurements of sediment community oxygen consumption (SCOC). This instrument has the, following capabilities: (1) it operates as an autonomous, free vehicle on the sea floor to 6,000-m depth for periods up...
Resource Type:: Article
Full Text:: h-’ m-2 d-l 1 28 Jan at 2020-4 Feb at 0438 2 4 Feb at 2140-11 Feb at 0558 3 11 Feb at 2255-18

Revenue-sharing clubs provide economic insurance and incentives for sustainability in common-pool resource systems

Creator:: Tilman, Andrew R., Levin, Simon, and Watson, James R.
Abstract:: Harvesting behaviors of natural resource users, such as farmers, fishermen and aquaculturists, are shaped by season-to-season and day-to-day variability, or in other words risk. Here, we explore how risk mitigation strategies can lead to sustainable use and improved management of common-pool natural resources. Over-exploitation of unmanaged natural resources, which lowers...
Resource Type:: Article
Full Text:: a s h c a 4 m I t h t s j a s w s m t a

Mapping change of older forest with nearest-neighbor imputation and Landsat time-series

Creator:: Ohmann, Janet L., Gregory, Matthew J., Roberts, Heather M., Cohen, Warren B., Kennedy, Robert E., and Yang, Zhiqiang
Abstract:: The Northwest Forest Plan (NWFP), which aims to conserve late-successional and old-growth forests (older forests) and associated species, established new policies on federal lands in the Pacific Northwest USA. As part of monitoring for the NWFP, we tested nearest-neighbor imputation for mapping change in older forest, defined by threshold values...
Resource Type:: Article
Full Text:: and Landsat time-series Janet L. Ohmann a,⇑, Matthew J. Gregory b, Heather M. Roberts b, Warren B

Investigation of limestone ecotypes of white spruce based on a provenance test series

Creator:: Lesser, Mark R., Cherry, Marilyn, and Parker, William H.
Abstract:: Previous laboratory and field studies have presented evidence for the existence of limestone ecotypes in white spruce (Picea glauca (Moench) Voss). Remeasurements of the range-wide 410 series of provenance trials were used for further evaluation of the existence of these ecotypes. In 2001, heights were measured of 23 provenances grown...
Resource Type:: Article
Full Text:: provenance test series Mark R. Lesser, Marilyn Cherry, and William H. Parker Abstract: Previous laboratory

Seismic sequence stratigraphy and tectonic evolution of Southern Hydrate Ridge

Creator:: Chevallier, Johanna, Tréhu, Anne Martine, Bangs, Nathan Lawrence Bailey, Johnson, Joel E., and Meyer, H. Jack
Abstract:: This paper presents a seismic sequence and structural analysis of a high-resolution three-dimensional seismic reflection survey that was acquired in June 2000 in preparation for Ocean Drilling Program (ODP) Leg 204. The seismic data were correlated with coring and logging results from nine sites drilled in 2002 during Leg 204....
Resource Type:: Article
Full Text:: TECTONIC EVOLUTION OF SOUTHERN HYDRATE RIDGE1 Johanna Chevallier,2,3 Anne M. Tréhu,2 Nathan L. Bangs,4

Flavin-Containing Monooxygenase S-Oxygenation of a Series of Thioureas and Thiones

Creator:: Henderson, Marilyn C., Siddens, Lisbeth K., Krueger, Sharon K., Stevens, J. Fred, Kedzie, Karen, Fang, Ken, Heidelbaugh, Todd, Phong Nguyen, Chow, Ken, Garst, Michael, Gil, Daniel, and Williams, David E.
Abstract:: Mammalian flavin-containing monooxygenase (FMO) is active towards many drugs with a heteroatom having the properties of a soft nucleophile. Thiocarbamides and thiones are S-oxygenated to the sulfenic acid which can either react with glutathione and initiate a redox-cycle or be oxygenated a second time to the unstable sulfinic acid. In...
Resource Type:: Article

Paired windward and leeward biogeochemical time series reveal consistent surface ocean CO₂ trends across the Hawaiian Ridge

Creator:: Dore, John E., Church, Matthew J., Karl, David M., Sadler, Daniel W., and Letelier, Ricardo M.
Abstract:: Sustained time series have provided compelling evidence for progressive acidification of the surface oceans through exchange with the growing atmospheric reservoir of carbon dioxide. However, few long-term programs exist, and extrapolation of results from one site to larger oceanic expanses is hampered by the lack of spatial coverage inherent to...
Resource Type:: Article

ScholarsArchive@OSU

United States Forest Disturbance Trends Observed Using Landsat Time Series

A nanoscale pn junction in series with tunable Schottky barriers

Ocean wavenumber estimation from wave-resolving time series imagery

An autonomous, bottom-transecting vehicle for making long time-series measurements of sediment community oxygen consumption to abyssal depths

Revenue-sharing clubs provide economic insurance and incentives for sustainability in common-pool resource systems

Mapping change of older forest with nearest-neighbor imputation and Landsat time-series

Investigation of limestone ecotypes of white spruce based on a provenance test series

Seismic sequence stratigraphy and tectonic evolution of Southern Hydrate Ridge

Flavin-Containing Monooxygenase S-Oxygenation of a Series of Thioureas and Thiones

Paired windward and leeward biogeochemical time series reveal consistent surface ocean CO₂ trends across the Hawaiian Ridge

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