Search

Search Results

• 1. [Article] A Dynamic Framework for Intelligent Control of River Flooding - A Case Study

  This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Society of Civil Engineers and can be found at: http://ascelibrary...

  Citation × Citation Citation Abstract Copy Title: A Dynamic Framework for Intelligent Control of River Flooding - A Case Study Author: Leon, Arturo S., Valverde, Rachelle, Sridhar, Venkataramana, Kanashiro, Elizabeth A. This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Society of Civil Engineers and can be found at: http://ascelibrary.org/journal/jwrmd5. Title: A Dynamic Framework for Intelligent Control of River Flooding - A Case Study Author: Leon, Arturo S., Valverde, Rachelle, Sridhar, Venkataramana, Kanashiro, Elizabeth A. This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Society of Civil Engineers and can be found at: http://ascelibrary.org/journal/jwrmd5. Close

• 2. [Article] Impacts of Agriculture on the Inland Capture Fisheries in the Mekong Delta

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Impacts of Agriculture on the Inland Capture Fisheries in the Mekong Delta Author: Vu, Vi An, Ngwenya, Elkana Abstract only. Title: Impacts of Agriculture on the Inland Capture Fisheries in the Mekong Delta Author: Vu, Vi An, Ngwenya, Elkana Abstract only. Close

• 3. [Article] A Novel Physically-Based Framework for the Intelligent Control of River Flooding

  Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR.

  Citation × Citation Citation Abstract Copy Title: A Novel Physically-Based Framework for the Intelligent Control of River Flooding Author: Leon, Arturo S., Gichamo, Tseganeh Z. Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR. Title: A Novel Physically-Based Framework for the Intelligent Control of River Flooding Author: Leon, Arturo S., Gichamo, Tseganeh Z. Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR. Close

• 4. [Article] Trees, snow and flooding: an investigation of forest canopy effects on snow accumulation and melt at the plot and watershed scales in the Pacific Northwest

  Concerns about the extent to which major Pacific Northwest floods over the last decade might have been exacerbated by logging have heightened the need for a better scientific understanding of the role ...

  Citation × Citation Citation Abstract Copy Title: Trees, snow and flooding: an investigation of forest canopy effects on snow accumulation and melt at the plot and watershed scales in the Pacific Northwest Author: Storck, Pascal Concerns about the extent to which major Pacific Northwest floods over the last decade might have been exacerbated by logging have heightened the need for a better scientific understanding of the role of forest maturity on snow accumulation and melt. To address this need, a multi-scale field and modeling study of the effects of forest canopies on snow accumulation and melt was conducted. Over a three year period, weighing lysimeters and cut-tree experiments were used to measure the process controlling snow interception and its fate at a site in the Umpqua National Forest, OR (elevation 1200 m). Continuous observations of below-canopy snowpack evolution were made over the same period. Over the study period, approximately 60 percent of annual snowfall was intercepted by the canopy (up to a maximum of 40 mm water equivalent). Approximately 72 percent and 28 percent of the intercepted snow was removed as meltwater drip and large snow masses, respectively. Apparent average sublimation rates from the intercepted snow were less than 1 mm per day and totaled approximately 100 mm per winter season. Title: Trees, snow and flooding: an investigation of forest canopy effects on snow accumulation and melt at the plot and watershed scales in the Pacific Northwest Author: Storck, Pascal Concerns about the extent to which major Pacific Northwest floods over the last decade might have been exacerbated by logging have heightened the need for a better scientific understanding of the role of forest maturity on snow accumulation and melt. To address this need, a multi-scale field and modeling study of the effects of forest canopies on snow accumulation and melt was conducted. Over a three year period, weighing lysimeters and cut-tree experiments were used to measure the process controlling snow interception and its fate at a site in the Umpqua National Forest, OR (elevation 1200 m). Continuous observations of below-canopy snowpack evolution were made over the same period. Over the study period, approximately 60 percent of annual snowfall was intercepted by the canopy (up to a maximum of 40 mm water equivalent). Approximately 72 percent and 28 percent of the intercepted snow was removed as meltwater drip and large snow masses, respectively. Apparent average sublimation rates from the intercepted snow were less than 1 mm per day and totaled approximately 100 mm per winter season. Close

• 5. [Article] Assessing the Impact of Storm Regime on Remotely-sensed Precipitation Extremes Across the Western Himalaya

  Extreme, flood-producing precipitation events in mountains threaten human life and local and national economies. In the Himalayas, scarce meteorological data historically limited understanding of the underlying ...

  Citation × Citation Citation Abstract Copy Title: Assessing the Impact of Storm Regime on Remotely-sensed Precipitation Extremes Across the Western Himalaya Author: Stanton, Alan L. Extreme, flood-producing precipitation events in mountains threaten human life and local and national economies. In the Himalayas, scarce meteorological data historically limited understanding of the underlying processes driving extreme events. However, the capacity to observe, measure and quantify precipitation on regional scales has increased tremendously over the last three decades with the increasing prevalence of remotely-sensed data. While remotely-sensed precipitation can add essential information for understanding local hydrology, the spatial and temporal scales of the observations may result in biases based on the types of events that can be captured by the data. We analyze one of the recent remotely-sensed precipitation datasets, collected by the Tropical Rainfall Measuring Mission (TRMM), to better understand the spatial and temporal context of storm processes that generate flood disasters in high mountain environments. The objectives of this study are to 1) analyze the spatial distribution of extreme rainfall and convection across the mountain systems of the western Himalayan region, 2) investigate the deviations between remotely-sensed and ground-based precipitation observations across the orography, and 3) examine the sub-grid heterogeneity of remotely-sensed precipitation observations. First, we provide evidence of significant deviations between the mean and variance of extreme rainfall and convective intensities across mountain systems, which may produce variable over and underestimations of precipitation across the landscape. Extreme rainfall values are highest across the Lower Himalaya where synoptic weather systems are more prevalent, whereas extreme convective intensities are significantly higher across the Inner Himalaya. Second, we identify that deviations between extreme precipitation values measured by TRMM and GBO stations reverse with increasing topography, indicating that both rainfall regime and valley-ridge rainfall distributions vary with elevation and relief. Third, we identify large sub-grid differences in the variance of the extreme rainfall distributions within a single TRMM pixel, underscoring the complexities of bias correction of gridded rainfall measurements using GBO stations. Our findings support the hypothesis that storm regimes vary with the orography, uniquely affecting the measurement of remotely-sensed precipitation. Title: Assessing the Impact of Storm Regime on Remotely-sensed Precipitation Extremes Across the Western Himalaya Author: Stanton, Alan L. Extreme, flood-producing precipitation events in mountains threaten human life and local and national economies. In the Himalayas, scarce meteorological data historically limited understanding of the underlying processes driving extreme events. However, the capacity to observe, measure and quantify precipitation on regional scales has increased tremendously over the last three decades with the increasing prevalence of remotely-sensed data. While remotely-sensed precipitation can add essential information for understanding local hydrology, the spatial and temporal scales of the observations may result in biases based on the types of events that can be captured by the data. We analyze one of the recent remotely-sensed precipitation datasets, collected by the Tropical Rainfall Measuring Mission (TRMM), to better understand the spatial and temporal context of storm processes that generate flood disasters in high mountain environments. The objectives of this study are to 1) analyze the spatial distribution of extreme rainfall and convection across the mountain systems of the western Himalayan region, 2) investigate the deviations between remotely-sensed and ground-based precipitation observations across the orography, and 3) examine the sub-grid heterogeneity of remotely-sensed precipitation observations. First, we provide evidence of significant deviations between the mean and variance of extreme rainfall and convective intensities across mountain systems, which may produce variable over and underestimations of precipitation across the landscape. Extreme rainfall values are highest across the Lower Himalaya where synoptic weather systems are more prevalent, whereas extreme convective intensities are significantly higher across the Inner Himalaya. Second, we identify that deviations between extreme precipitation values measured by TRMM and GBO stations reverse with increasing topography, indicating that both rainfall regime and valley-ridge rainfall distributions vary with elevation and relief. Third, we identify large sub-grid differences in the variance of the extreme rainfall distributions within a single TRMM pixel, underscoring the complexities of bias correction of gridded rainfall measurements using GBO stations. Our findings support the hypothesis that storm regimes vary with the orography, uniquely affecting the measurement of remotely-sensed precipitation. Close

• 6. [Article] Are Watershed Management Plans Selected and Preferred by Stakeholders Considering Current Climate Conditions Robust against Climate Change Scenarios? A Sensitivity Study of Stakeholders Spatially-Explicit Preferences

  Citation × Citation Citation Abstract Copy Title: Are Watershed Management Plans Selected and Preferred by Stakeholders Considering Current Climate Conditions Robust against Climate Change Scenarios? A Sensitivity Study of Stakeholders Spatially-Explicit Preferences Author: Cannady-Shultz, Kenneth R. Title: Are Watershed Management Plans Selected and Preferred by Stakeholders Considering Current Climate Conditions Robust against Climate Change Scenarios? A Sensitivity Study of Stakeholders Spatially-Explicit Preferences Author: Cannady-Shultz, Kenneth R. Close

• 7. [Article] Fast approach for unsteady flow routing in complex river networks based on performance graphs

  This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Society of Civil Engineers and can be found at: http://ascelibrar...

  Citation × Citation Citation Abstract Copy Title: Fast approach for unsteady flow routing in complex river networks based on performance graphs Author: Leon, Arturo S., González-Castro, Juan A., Kanashiro, Elizabeth A. This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Society of Civil Engineers and can be found at: http://ascelibrary.org/toc/jhend8/current. Title: Fast approach for unsteady flow routing in complex river networks based on performance graphs Author: Leon, Arturo S., González-Castro, Juan A., Kanashiro, Elizabeth A. This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Society of Civil Engineers and can be found at: http://ascelibrary.org/toc/jhend8/current. Close