A5090034366- Geophysics and Gravity Measurements
- GNSS positioning and interference
- Underwater Acoustics Research
- Geodetic Measurements and Engineering Structures
- Methane Hydrates and Related Phenomena
- Maritime and Coastal Archaeology
- Coral and Marine Ecosystems Studies
- Ionosphere and magnetosphere dynamics
- Geographic Information Systems Studies
- Coastal and Marine Dynamics
- IoT and GPS-based Vehicle Safety Systems
- Historical Geography and Cartography
- Advanced Computational Techniques and Applications
- Crustacean biology and ecology
- Data Management and Algorithms
- Structural Health Monitoring Techniques
- Marine Biology and Ecology Research
- Child Development and Digital Technology
- 3D Modeling in Geospatial Applications
- Cephalopods and Marine Biology
- Science and Climate Studies
- Earthquake Detection and Analysis
- Geophysical Methods and Applications
- Marine and fisheries research
- Coastal wetland ecosystem dynamics
Environmental Systems Research Institute (United States)
2018-2021
ORCID
2021
Colorado State University
2014
Dorset Green Technology Park
2002
Maine Department of Marine Resources
1993
University of Hawaiʻi at Mānoa
1986-1991
University of Hawaii System
1986
Honolulu University
1986
A new 30-m spatial resolution global shoreline vector (GSV) was developed from annual composites of 2014 Landsat satellite imagery. The semi-automated classification the imagery accomplished by manual selection training points representing water and non-water classes along entire coastline. Polygon topology applied to GSV, resulting in a characterisation number size islands. Three islands were mapped: continental mainlands (5), greater than 1 km2 (21,818), smaller (318,868). GSV represents...
Hydrothermal plumes associated with nearshore lava flows from Kilauea Volcano, Hawaii were studied on five occasions during 1989–1990 to address the current lack of data direct lava‐seawater interactions. The following enrichments found in sea‐surface hydrothermal above active underwater flows: H 2 , 15,000x ambient seawater concentrations; Mn, 250x; and Si, 20x. Water temperatures reached 46°C. Lower concentrations observed increasing distance shore, Mn linearly related temperature. Unlike...
The World Geodetic System 1984 (WGS84) has been consistent with the International Terrestrial Reference Frame (ITRF) since 1994. After original release of WGS84 in 1987 by Defense Mapping Agency (since superseded National Geospatial-Intelligence Agency, NGA), there have six subsequent realizations frame, designated (G730), (G873), (G1150), (G1674), (G1762), and (G2139). Users often fail to document metadata indicating realization epoch related their data collections. As a result, when...
Abstract Longitude–latitude grids are commonly used for surface analyses and data storage in GIS. For volumetric analyses, three‐dimensional meshes perpendicularly raised above or below the gridded applied. Since defined with geographic coordinates, they not equal area volume due to convergence of meridians radii. This article compiles presents known geodetic considerations relevant formulae needed longitude–latitude grid mesh The effect neglecting these is demonstrated on calculations...
The density of traps for American lobster Homarus americanus was surveyed using aerial photography within a study area off midcoastal Maine, Trap estimated from number trap buoys present. Photographs were taken with 35-mm camera mounted in single-engine plane at an altitude 150 m. Three subareas (inshore Boothbay Harbor, offshore and inshore West Southport) selected surveying buoy on regular basis during 1987–1990. Inshore (within 2 km mainland) densities ranged 167 to 749 traps/km2....