Elijah Ramsey, III, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 76
A case of timely satellite image acquisitions in support of coastal emergency environmental response management A case of timely satellite image acquisitions in support of coastal emergency environmental response management
The synergistic application of optical and radar satellite imagery improves emergency response and advance coastal monitoring from the realm of “opportunistic” to that of “strategic.” As illustrated by the Hurricane Ike example, synthetic aperture radar imaging capabilities are clearly applicable for emergency response operations, but they are also relevant to emergency environmental...
Authors
Elijah W. Ramsey, Dirk Werle, Zhong Lu, Amina Rangoonwala, Yukihiro Suzuoki
Characterizing the marsh dieback spectral response at the plant and canopy level with hyperspectral and temporal remote sensing data Characterizing the marsh dieback spectral response at the plant and canopy level with hyperspectral and temporal remote sensing data
We describe newly developed remote sensing tools to map the localized occurrences and regional distribution of the marsh dieback in coastal Louisiana (Fig. 1). As a final goal of our research and development, we identified what spectral features accompanied the onset of dieback and could be directly linked to the optical signal measured at the satellite. In order to accomplish our...
Authors
E. Ramsey, A. Rangoonwala
Integrating image and GIS processing to map a complex landscape with national vegetation classification system protocols and high spatial resolution image data Integrating image and GIS processing to map a complex landscape with national vegetation classification system protocols and high spatial resolution image data
No abstract available.
Authors
Amina Rangoonwala, Elijah Ramsey
Remote sensing methods for mapping the onset and progression of spartina alterniflora marsh dieback in coastal Louisiana Remote sensing methods for mapping the onset and progression of spartina alterniflora marsh dieback in coastal Louisiana
No abstract available.
Authors
Amina Rangoonwala, Elijah Ramsey III, Gene Nelson
Multiple baseline radar interferometry applied to coastal land cover classification and change analyses Multiple baseline radar interferometry applied to coastal land cover classification and change analyses
ERS-1 and ERS-2 SAR data were collected in tandem over a four-month period and used to generate interferometric coherence, phase, and intensity products that we compared to a classified land cover coastal map of Big Bend, Florida. Forests displayed the highest intensity, and marshes the lowest. The intensity for fresh marsh and forests progressively shifted while saline marsh intensity...
Authors
Elijah W. Ramsey, Z. Lu, A. Rangoonwala, Russ Rykhus
Canopy reflectance related to marsh dieback onset and progression in Coastal Louisiana Canopy reflectance related to marsh dieback onset and progression in Coastal Louisiana
In this study, we extended previous work linking leaf spectral changes, dieback onset, and progression of Spartina alterniflora marshes to changes in site-specific canopy reflectance spectra. First, we obtained canopy reflectance spectra (approximately 20 m ground resolution) from the marsh sites occupied during the leaf spectral analyses and from additional sites exhibiting visual signs...
Authors
Elijah W. Ramsey, A. Rangoonwala
Science and Products
Filter Total Items: 76
A case of timely satellite image acquisitions in support of coastal emergency environmental response management A case of timely satellite image acquisitions in support of coastal emergency environmental response management
The synergistic application of optical and radar satellite imagery improves emergency response and advance coastal monitoring from the realm of “opportunistic” to that of “strategic.” As illustrated by the Hurricane Ike example, synthetic aperture radar imaging capabilities are clearly applicable for emergency response operations, but they are also relevant to emergency environmental...
Authors
Elijah W. Ramsey, Dirk Werle, Zhong Lu, Amina Rangoonwala, Yukihiro Suzuoki
Characterizing the marsh dieback spectral response at the plant and canopy level with hyperspectral and temporal remote sensing data Characterizing the marsh dieback spectral response at the plant and canopy level with hyperspectral and temporal remote sensing data
We describe newly developed remote sensing tools to map the localized occurrences and regional distribution of the marsh dieback in coastal Louisiana (Fig. 1). As a final goal of our research and development, we identified what spectral features accompanied the onset of dieback and could be directly linked to the optical signal measured at the satellite. In order to accomplish our...
Authors
E. Ramsey, A. Rangoonwala
Integrating image and GIS processing to map a complex landscape with national vegetation classification system protocols and high spatial resolution image data Integrating image and GIS processing to map a complex landscape with national vegetation classification system protocols and high spatial resolution image data
No abstract available.
Authors
Amina Rangoonwala, Elijah Ramsey
Remote sensing methods for mapping the onset and progression of spartina alterniflora marsh dieback in coastal Louisiana Remote sensing methods for mapping the onset and progression of spartina alterniflora marsh dieback in coastal Louisiana
No abstract available.
Authors
Amina Rangoonwala, Elijah Ramsey III, Gene Nelson
Multiple baseline radar interferometry applied to coastal land cover classification and change analyses Multiple baseline radar interferometry applied to coastal land cover classification and change analyses
ERS-1 and ERS-2 SAR data were collected in tandem over a four-month period and used to generate interferometric coherence, phase, and intensity products that we compared to a classified land cover coastal map of Big Bend, Florida. Forests displayed the highest intensity, and marshes the lowest. The intensity for fresh marsh and forests progressively shifted while saline marsh intensity...
Authors
Elijah W. Ramsey, Z. Lu, A. Rangoonwala, Russ Rykhus
Canopy reflectance related to marsh dieback onset and progression in Coastal Louisiana Canopy reflectance related to marsh dieback onset and progression in Coastal Louisiana
In this study, we extended previous work linking leaf spectral changes, dieback onset, and progression of Spartina alterniflora marshes to changes in site-specific canopy reflectance spectra. First, we obtained canopy reflectance spectra (approximately 20 m ground resolution) from the marsh sites occupied during the leaf spectral analyses and from additional sites exhibiting visual signs...
Authors
Elijah W. Ramsey, A. Rangoonwala