Joseph Aquifer System and sediment transport along a stream in that area. She has participated in mercury studies in litterfall, precipitation, and streams. Her most recent work has involved flood inundation mapping, low-flow characteristics estimation, and regional regression analysis for low-flow estimation at ungagged sites. Wednesday, October 5, - pm ET. Geological Survey. The capability to map marsh structure started with developing field methods that provided quantitative and reproducible 3-dimentional representations of marsh canopy structure.
A Review of Wetland Remote Sensing
Methods of field collection were standardized over numerous studies and conversion of those standardized field measurements to vertical profiles of leaf area index LAI and average leaf angle distribution LAD was accomplished without user supplied estimates. LAI integrated to a volume metric and LAD were combined with polarimetric SAR data to create empirical relationships that were then used to create maps of marsh structure. Working to support coastal resilience, our studies have focused on providing resource management with effective strategies for identifying latent impacts to coastal resources.
Within that effort, we have studied the capabilities of radar to map subcanopy flooding and its persistence in coastal marshes. We have also used optical to show how surge can cause widespread fresh and saline marsh dieback. Here we use a sequence of post landfall radar based surge extents to calculate surge persistence and link that to optical based pre to post landfall marsh live biomass change.
Elijah Ramsey III is a principal investigator of terrestrial and coastal ocean remote sensing and image processing in the U. He received his B.
MSc topic on wetland modeling | EAGLE MSc program
His applied research is focused on producing consistent biophysical information directly relevant to sustaining critical natural resources that support the well-being of human and wildlife populations. As part of this focus, his work integrates data from passive to active and optical to radar systems that advance the response and strategic monitoring of natural resources and the human populations and facilities that occupy these environments. Amina Rangoonwala received her M.
Sc degree in Physics from the University of Karachi, Pakistan in She has worked on projects applying hyperspectral image analysis to determine the onset and progression of vegetation decline, detection of the invasive species occurrences, and leaf optics measurements for ground base validation. Her work also involves the integration of optical and radar satellite data to map the relationship between flood inundation extent and duration and marsh condition and the development of polarimetric radar methods for mapping canopy structure.
She is called to map river and storm flooding in the coastal region of the central Gulf of Mexico during emergency activations of the International Charter. September Wednesday, July 20, — pm eastern. Geographically isolated wetlands GIWs , defined as wetlands surrounded by uplands, provide an array of ecosystem goods and services. Within the United States, federal regulatory protections for GIWs are contingent, in part, on the quantification of their singular or aggregate effects on the hydrological, biological, or chemical integrity of waterways regulated by the Clean Water Act CWA.
However, limited tools are available to assess the downgradient effects of GIWs. We modified the Soil and Water Assessment Tool SWAT , a popular watershed-scale hydrologic model, to incorporate an improved representation of GIW hydrologic processes and thereby evaluate the watershed-scale hydrologic effects of GIWs on downgradient hydrology.
- An F. Scott Fitzgerald Encyclopedia.
- Satellite remote sensing of wetlands.
- Iryna-Dronova | UC Berkeley College of Environmental Design;
- chapter and author info.
Our approach to modifying SWAT may be replicated to evaluate the watershed-scale aggregate hydrologic effects of GIWs in different watersheds and physiographic regions. Integration of remote sensing data into a watershed-scale wetland modeling for an improved model prediction - Sangchul Lee, PhD, Candidate, University of Maryland. Wetlands provide important ecological benefits for biodiversity and water quality. This ecosystem functioning highly relies on the hydrological characteristics of wetlands e.
Soil and Water Assessment Tool SWAT , one of widely used watershed models, has been applied to investigate catchment-scale wetland hydrological function. However, uncertainties associated with wetland parameterization and the prediction of inundated areas have not been thoroughly assessed due to the data unavailability. Remote sensing provides synoptic information on the spatial distribution of wetland, and recent studies demonstrated improved capability to characterize wetland inundation patterns at a high resolution m using time series Landsat records and LiDAR.
This study integrated remote sensing data into Soil and Water Assessment Tool SWAT to improve the wetland parameterization and prediction on inundated area and to assess the cumulative hydrological impacts of wetlands on the downstream water. We will illustrate how inundation maps derived from satellite remote sensing can be used to set up spatially varying wetland parameters and to assess predicted inundation at the landscape scales, considering the assumptions and simplification of wetland processes represented in SWAT.
Using the Choptank Watershed as a case study, we will demonstrate the hydrological benefits of wetlands to stabilize overall flow pattern and reduce peak flow at the storm event.
[PDF] Wetland Landscape Characterization: GIS Remote Sensing and Image Analysis [Download]
Prior converted croplands PCC are wetlands that were drained for crop production prior to the Swampbuster provisions of the Food Security Act. We find evidence that the amount of nitrate exported from agricultural watersheds can be related to extent of crop production on hydric soils associated with PCCs.
Grey R. Wetlands Ecology and Management 5: — Klemas V. Remote sensing of landscape-level coastal environmental indicators. Environmental Management 47— Kushwaha S. Lee C. Lee J. Application of geoprocessing and simulation modeling to estimate impacts of sea level rise on the northeast coast of Florida. Lee K. Wetland Detection Methods. In: Lyon J. Lewis Publishers, New York, pp.
Llewellyn D. A decision-support system for prioritizing restoration sites on the Mississippi River alluvial plain. Conservation Biology — The influence of geographic sam pling methods on vegetation map accuracy evaluation in a swampy environment. Louiselle S. Modelling energy fluxes in remote wetland ecosystems with the help of remote sensing. Ecological Modelling — Luczkovich J. Discrimination of coral reefs, seagrass meadows, and sandy bottom types from space: a Dominican Republic case study. Lulla K. The Landsat satellites and selected aspects of physical geography. Progress in Physical Geography 7: 1— Lunetta R.
Application of multi-temporal Landsat 5 TM imagery for wetland identification. Photo grammetric Engineering and Remote Sensing — MacDonald T. Wetland rehabilitation and remote sensing.
Faculty + Staff
In: Streever W. Kluwer Academic Publishers, Boston, pp. Macleod R. A quantitative comparison of change-detection algorithms for monitoring eelgrass from remotely sensed data. McCarthy T. South African Journal of Sciences — Mertes L. Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon River in Brazil from a remote sensing perspective.
Geomorphology — Mitsch W. Van Nostrand Reinhold, New York, pp. Munyati C. Wetland change detection on the Kafue Flats, Zambia, by classification of a multitemporal remote sensing image dataset. Narumalani S. Aquatic macrophyte modeling using GIS and logistic multiple regression. Photogrammetric Engineering and Remote Sensing 41— Nayak S.
Coastal morphology: a case study of the Gulf of Khambhat Cambay. International Journal of Remote Sensing 6: — Palylyk C. Edmonton, Alberta, Canada, pp — Park R. Potential effects of sea-level rise on Puget Sound wetlands. Geocarto International 4: 99— Use of remote sensing for modeling the impacts of sea level rise. World Resources Review 3: — Penuelas J. Assessing community type, plant biomass, pigment composition, and photosynthetic efficiency of aquatic vegetation from spectral reflectance. Pietroniro A. Application of a grouped response unit hydrological model to a northern wetland region.
Hydrological Processes — Classifying terrain in a muskeg-wetland regime for application to GRU-type distributed hydrologic models. Canadian Journal of Remote Sensing 45— Pope K.
Remote sensing of tropical wetlands for malaria control in Chiapas, Mexico.