A5067221951- Underwater Acoustics Research
- Advanced Computational Techniques and Applications
- Methane Hydrates and Related Phenomena
- Geological Modeling and Analysis
- Geology and Paleoclimatology Research
- Research Data Management Practices
- Geological and Geophysical Studies
- Oceanographic and Atmospheric Processes
- Geological formations and processes
- Scientific Computing and Data Management
- Geographic Information Systems Studies
- Geological and Geochemical Analysis
- Environmental Monitoring and Data Management
- Hydrocarbon exploration and reservoir analysis
- Data Quality and Management
- Maritime and Coastal Archaeology
- Geological Studies and Exploration
- Atmospheric and Environmental Gas Dynamics
- Seismic Imaging and Inversion Techniques
- Satellite Image Processing and Photogrammetry
- Distributed and Parallel Computing Systems
- Marine and fisheries research
- Geochemistry and Geologic Mapping
- Semantic Web and Ontologies
- Reservoir Engineering and Simulation Methods
Lamont-Doherty Earth Observatory
2016-2025
Columbia University
2016-2025
Woods Hole Oceanographic Institution
2005-2012
University of Hawaii System
2012
University of Washington
2012
University of New Hampshire
2012
State University of New York
2001-2006
Stony Brook University
2006
Seafloor bathymetric data acquired with modern swath echo sounders provide coverage for only a small fraction of the global seabed yet are high value studies dynamic processes seafloor volcanism, tectonics, mass wasting, and sediment transport that create shape undersea landscape. A new method compilation bathymetry preserves native resolution sonars is presented. The Global Multi‐Resolution Topography synthesis consists hierarchy tiles digital elevations shaded relief imagery spanning nine...
Abstract General Bathymetric Chart of the Oceans (GEBCO) has released GEBCO_2014 grid, a new digital bathymetric model world ocean floor merged with land topography from publicly available elevation models. grid spacing 30 arc sec and updates 2010 release (GEBCO_08) by incorporating versions regional compilations International Arctic Ocean, Southern Baltic Sea Bathymetry Database, data European Marine Observation Data network bathymetry portal, among other sources. Approximately 33% cells...
Despite many of years mapping effort, only a small fraction the world ocean’s seafloor has been sampled for depth, greatly limiting our ability to explore and understand critical ocean processes. Recognizing this poor state knowledge depths role such plays in understanding maintaining planet, GEBCO Nippon Foundation have joined forces establish Seabed 2030 Project, an international effort with objective facilitating complete by 2030. The Project will globally distributed regional data...
Detailed knowledge of the shape seafloor is crucial to humankind. Bathymetry data critical for safety navigation and used many other applications. In an era ongoing environmental degradation worldwide, bathymetry (and derived from it) play a pivotal role in using managing world's oceans way that accordance with United Nations Sustainable Development Goal 14 - conserve sustainably use oceans, seas marine resources sustainable development. However, vast majority our still virtually unmapped,...
The geological record encodes the relationship between climate and atmospheric carbon dioxide (CO 2 ) over long short timescales, as well potential drivers of evolutionary transitions. However, reconstructing CO beyond direct measurements requires use paleoproxies herein lies challenge, proxies differ in their assumptions, degree understanding, even reconstructed values. In this study, we critically evaluated, categorized, integrated available to create a high-fidelity transparently...
We have monitored a newly erupted volcanic island in the Kingdom of Tonga, unofficially known as Hunga Tonga Ha'apai, by means relatively frequent high spatial resolution (~50 cm) satellite observations. The new ~1.8 km2 formed tuff cone over course month-long hydromagmatic eruption early 2015 Tonga-Kermadec arc. Such ash-dominated eruptions usually produce fragile subaerial landscapes that wash away rapidly due to marine erosion, occurred nearby 2009. Our measured rates erosion are ~0.00256...
Advances in underwater imaging enable collection of extensive seafloor image datasets necessary for monitoring important benthic ecosystems. The ability to collect imagery has outpaced our capacity analyze it, hindering mobilization this crucial environmental information. Machine learning approaches provide opportunities increase the efficiency with which is analyzed, yet large and consistent support development such are scarce. Here we present BenthicNet: a global compilation designed...
Four seafloor benchmarks were deployed with ROV Jason2 at frequently visited areas along the northern East Pacific Rise (NEPR) ridge crest near 9°50′N, within Ridge2000 EPR integrated study site (ISS) bull's eye. When used in concert established deep‐ocean acoustic positioning techniques, these provide navigational infrastructure to facilitate integration of near‐bottom data this by allowing efficient and quantitative coregistration observations collected on multiple dives over cruises....
Ultrahigh‐resolution bathymetric maps (25 cm grid) are used to quantify the physical dimensions of and spatial relationships between tectonic, volcanic, hydrothermal features at six vent fields in Lau back‐arc basin. Supplemented with near‐bottom photos, nested within regional DSL‐120A side‐scan sonar data, these provide insight into nature systems along Eastern Spreading Center (ELSC) Valu Fa Ridge (VFR). Along‐axis transitions evident localized volcanic morphology tectonic characteristics...
In 2005 a Greek and American interdisciplinary team investigated two shipwrecks off the coast of Chios dating to 4th-century B.C. 2nd/1st century. The project pioneered archaeological methods precision acoustic, digital image, chemical survey using an autonomous underwater vehicle (AUV) in-situ sensors, increasing speed data acquisition while decreasing costs. AUV recorded revealing physical dimensions, age, cargo, preservation wrecks. earlier wreck contained more than 350 amphoras,...
Recent advances in underwater vehicle navigation and sonar technology now permit detailed mapping of complex seafloor bathymetry found at mid‐ocean ridge crests. Imagenex 881 (675 kHz) scanning data collected during low‐altitude (∼5 m) surveys conducted with DSV Alvin were used to produce submeter resolution bathymetric maps five hydrothermal vent areas the East Pacific Rise (EPR) Ridge2000 Integrated Study Site (9°50′N, “bull's‐eye”). Data 29 dives 2004 2005 merged through a grid...
Abstract Arc volcanoes are important to our understanding of submarine volcanism because at some sites frequent eruptions cause them grow and collapse on human timescales. This makes it possible document volcanic processes. Active have been observed the summit NW Rota‐1 in Mariana Arc. We use remotely operated vehicle videography repeat high‐resolution bathymetric surveys construct geologic maps 2009 2010 relate evolution area over a 10 year period (2004–2014). find that were characterized...
Abstract NW Rota‐1 is a submarine volcano in the Mariana volcanic arc located ∼100 km north of Guam. Underwater explosive eruptions driven by magmatic gases were first witnessed there 2004 and continued until at least 2010. During March 2010 expedition, visual observations documented continuous but variable eruptive activity multiple vents ∼560 m depth. Some released CO 2 bubbles passively continuously, while others during stronger intermittent bursts. Plumes water column over imaged an...
High-resolution seabed sediment information is critical for a range of marine spatial planning applications in multi-use shelf environments. To establish this the Bay Fundy, Canada, legacy measurements were obtained from regional data compilations, and eight parameters describing grain size modelled across extent bay using high resolution acoustic seafloor mapping oceanographic datasets. This was achieved purpose-made convolutional neural network configured geospatial modelling multivariate...
Abstract Marine magnetic anomalies are a powerful tool for detecting geomagnetic polarity reversals, lithological boundaries, topographic contrasts, and alteration fronts in the oceanic lithosphere. Our aim here is to detect contacts fast‐spreading lower crust shallow mantle by characterizing investigating their origins. We conducted high‐resolution, near‐bottom, vector survey of exposed Hess Deep “tectonic window” using remotely operated vehicle (ROV) Isis during RRS James Cook cruise JC21...
The Antarctic Multibeam Bathymetry and Geophysical Data Synthesis(AMBS) is a web-accessible data resource for marine geoscience research in the Southern Ocean. primary focusisto preserve provide public accessto multibeam bathymetry acquired during expeditions of vesselssupported by U.S. National Science Foundation. Since itsinception 2003, our goal has been to facilitate visualization exploration subsea landscape full detail original both specialists non-specialists. Visualization across...
Over the course of a scientific career, large fraction data collected by investigators turns into at risk becoming inaccessible to future science. Although part investigators' is made available in manuscripts and databases, other may remain unpublished, non-digital, on degrading or near obsolete digital media, inadequately documented for reuse. In 2013, Integrated Earth Data Applications (IEDA) provided rescue mini-awards three science investigators. IEDA's user communities geochemistry,...