Elijah Ramsey, III, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 76
Marsh canopy leaf area and orientation calculated for improved marsh structure mapping Marsh canopy leaf area and orientation calculated for improved marsh structure mapping
An approach is presented for producing the spatiotemporal estimation of leaf area index (LAI) of a highly heterogeneous coastal marsh without reliance on user estimates of marsh leaf-stem orientation. The canopy LAI profile derivation used three years of field measured photosynthetically active radiation (PAR) vertical profiles at seven S. alterniflora marsh sites and iterative transform...
Authors
Elijah W. Ramsey, Amina Rangoonwala, Cathleen E. Jones, Terri Bannister
Structural classification of marshes with Polarimetric SAR highlighting the temporal mapping of marshes exposed to oil Structural classification of marshes with Polarimetric SAR highlighting the temporal mapping of marshes exposed to oil
Empirical relationships between field-derived Leaf Area Index (LAI) and Leaf Angle Distribution (LAD) and polarimetric synthetic aperture radar (PolSAR) based biophysical indicators were created and applied to map S. alterniflora marsh canopy structure. PolSAR and field data were collected near concurrently in the summers of 2010, 2011, and 2012 in coastal marshes, and PolSAR data alone...
Authors
Elijah W. Ramsey, Amina Rangoonwala, Cathleen E. Jones
Radar and optical image fusion and mapping of land cover and wetland resources Radar and optical image fusion and mapping of land cover and wetland resources
No abstract available.
Authors
Elijah W. Ramsey, Amina Rangoonwala
Oil source-fingerprinting in support of polarimetric radar mapping of Macondo-252 oil in Gulf Coast marshes Oil source-fingerprinting in support of polarimetric radar mapping of Macondo-252 oil in Gulf Coast marshes
Polarimetric synthetic aperture radar (PolSAR) data exhibited dramatic, spatially extensive changes from June 2009 to June 2010 in Barataria Bay, Louisiana. To determine whether these changes were associated with the Deepwater Horizon (DWH) oil spill, twenty-nine sediment samples were collected in 2011 from shoreline and nearshore–interior coastal marsh locations where oil was not...
Authors
Elijah W. Ramsey, Buffy M. Meyer, Amina Rangoonwala, Edward Overton, Cathleen E. Jones, Terri Bannister
Marsh dieback, loss, and recovery mapped with satellite optical, airborne polarimetric radar, and field data Marsh dieback, loss, and recovery mapped with satellite optical, airborne polarimetric radar, and field data
Landsat Thematic Mapper and Satellite Pour l'Observation de la Terre (SPOT) satellite based optical sensors, NASA Uninhabited Aerial Vehicle synthetic aperture radar (UAVSAR) polarimetric SAR (PolSAR), and field data captured the occurrence and the recovery of an undetected dieback that occurred between the summers of 2010, 2011, and 2012 in the Spartina alterniflora marshes of coastal...
Authors
Elijah W. Ramsey, Amina Rangoonwala, Zhaohui Chi, Cathleen E. Jones, Terri Bannister
Coastal flood inundation monitoring with Satellite C-band and L-band Synthetic Aperture Radar data Coastal flood inundation monitoring with Satellite C-band and L-band Synthetic Aperture Radar data
Satellite Synthetic Aperture Radar (SAR) was evaluated as a method to operationally monitor the occurrence and distribution of storm- and tidal-related flooding of spatially extensive coastal marshes within the north-central Gulf of Mexico. Maps representing the occurrence of marsh surface inundation were created from available Advanced Land Observation Satellite (ALOS) Phased Array type...
Authors
Elijah W. Ramsey, Amina Rangoonwala, Terri Bannister
Science and Products
Filter Total Items: 76
Marsh canopy leaf area and orientation calculated for improved marsh structure mapping Marsh canopy leaf area and orientation calculated for improved marsh structure mapping
An approach is presented for producing the spatiotemporal estimation of leaf area index (LAI) of a highly heterogeneous coastal marsh without reliance on user estimates of marsh leaf-stem orientation. The canopy LAI profile derivation used three years of field measured photosynthetically active radiation (PAR) vertical profiles at seven S. alterniflora marsh sites and iterative transform...
Authors
Elijah W. Ramsey, Amina Rangoonwala, Cathleen E. Jones, Terri Bannister
Structural classification of marshes with Polarimetric SAR highlighting the temporal mapping of marshes exposed to oil Structural classification of marshes with Polarimetric SAR highlighting the temporal mapping of marshes exposed to oil
Empirical relationships between field-derived Leaf Area Index (LAI) and Leaf Angle Distribution (LAD) and polarimetric synthetic aperture radar (PolSAR) based biophysical indicators were created and applied to map S. alterniflora marsh canopy structure. PolSAR and field data were collected near concurrently in the summers of 2010, 2011, and 2012 in coastal marshes, and PolSAR data alone...
Authors
Elijah W. Ramsey, Amina Rangoonwala, Cathleen E. Jones
Radar and optical image fusion and mapping of land cover and wetland resources Radar and optical image fusion and mapping of land cover and wetland resources
No abstract available.
Authors
Elijah W. Ramsey, Amina Rangoonwala
Oil source-fingerprinting in support of polarimetric radar mapping of Macondo-252 oil in Gulf Coast marshes Oil source-fingerprinting in support of polarimetric radar mapping of Macondo-252 oil in Gulf Coast marshes
Polarimetric synthetic aperture radar (PolSAR) data exhibited dramatic, spatially extensive changes from June 2009 to June 2010 in Barataria Bay, Louisiana. To determine whether these changes were associated with the Deepwater Horizon (DWH) oil spill, twenty-nine sediment samples were collected in 2011 from shoreline and nearshore–interior coastal marsh locations where oil was not...
Authors
Elijah W. Ramsey, Buffy M. Meyer, Amina Rangoonwala, Edward Overton, Cathleen E. Jones, Terri Bannister
Marsh dieback, loss, and recovery mapped with satellite optical, airborne polarimetric radar, and field data Marsh dieback, loss, and recovery mapped with satellite optical, airborne polarimetric radar, and field data
Landsat Thematic Mapper and Satellite Pour l'Observation de la Terre (SPOT) satellite based optical sensors, NASA Uninhabited Aerial Vehicle synthetic aperture radar (UAVSAR) polarimetric SAR (PolSAR), and field data captured the occurrence and the recovery of an undetected dieback that occurred between the summers of 2010, 2011, and 2012 in the Spartina alterniflora marshes of coastal...
Authors
Elijah W. Ramsey, Amina Rangoonwala, Zhaohui Chi, Cathleen E. Jones, Terri Bannister
Coastal flood inundation monitoring with Satellite C-band and L-band Synthetic Aperture Radar data Coastal flood inundation monitoring with Satellite C-band and L-band Synthetic Aperture Radar data
Satellite Synthetic Aperture Radar (SAR) was evaluated as a method to operationally monitor the occurrence and distribution of storm- and tidal-related flooding of spatially extensive coastal marshes within the north-central Gulf of Mexico. Maps representing the occurrence of marsh surface inundation were created from available Advanced Land Observation Satellite (ALOS) Phased Array type...
Authors
Elijah W. Ramsey, Amina Rangoonwala, Terri Bannister