Results 101 to 110 of about 28,768 (293)

Bathymetry retrieval from optical images with spatially distributed support vector machines

GIScience & Remote Sensing, 2019
This paper presents a spatially distributed support vector machine (SVM) system for estimating shallow water bathymetry from optical satellite images. Unlike the traditional global models that make predictions from a unified global model for the entire ...
Lei Wang, Hongxing Liu, Haibin Su, Jun Wang   +3 more
doaj   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source

Detecting fish aggregations from reef habitats mapped with high resolution side scan sonar imagery [PDF]

, 2006
As part of a multibeam and side scan sonar (SSS) benthic survey of the Marine Conservation District (MCD) south of St. Thomas, USVI and the seasonal closed areas in St. Croix—Lang Bank (LB) for red hind (Epinephelus guttatus) and the Mutton Snapper (MS) (
Arsenault, Jean-Luc, Benoit, Nicolas, Moody, Gary, Prada, Martha C., Rivera, Jose A.   +4 more
core  

Isolation, Insularity and Resilience: A Review of the Geophysical, Socioeconomic, and Environmental Vulnerabilities of Gran Canaria and Lesvos Islands for Policy Interventions to Global Change

Sustainable Development, EarlyView.
ABSTRACT The dynamic nature of small islands being geographically isolated and their perceived connectedness with global networks complicates research attempts to draw general conclusions on whether insularity leads to marginalization or strengthens their resilience for sustainable development.
Toheeb Lekan Jolaosho, Mazen Marouani, Takwa Boughanmi   +2 more
wiley   +1 more source

Least-Squares-Based Deep Learning for Sentinel-2 Derived Bathymetry: A Case Study on Anegada’s Southern Coast [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Satellite-derived bathymetry (SDB) provides a cost-effective solution for coastal mapping, but challenges remain in model interpretability and uncertainty quantification. This study investigates the applicability of the least-squares-based deep learning (
Y. Liu, A. Amiri-Simkooei, R. Lindenbergh, M. Snellen   +3 more
doaj   +1 more source

Preliminary Studies Leading Toward the Development of a LIDAR Bathymetry Mapping Instrument [PDF]

, 1993
The National Aeronautics and Space Administration (NASA) at Goddard Space Flight Center (GSFC) has developed a laser ranging device (LIDAR) which provides accurate and timely data of earth features.
Hill, John M., Krabill, William, Krenek, Brendan D., Kunz, Terry D., Stetina, Fran   +4 more
core   +1 more source

Measurement of Micro-bathymetry with a GOPRO Underwater Stereo Camera Pair [PDF]

, 2012
A GO-PRO underwater stereo camera kit has been used to measure the 3D topography (bathymetry) of a patch of seafloor producing a point cloud with a spatial data density of 15 measurements per 3 mm grid square and an standard deviation of less than 1 cm A
Rzhanov, Yuri, Schmidt, Val E.
core   +3 more sources

300 Years of Degradation in Wales Estuaries and Coasts

Natural Resources Forum, EarlyView.
ABSTRACT The world's oceans are in a severe state of degradation, yet our understanding of that degradation is often based on changes observed only in the past 20–50 years. This narrow view leads to marine conservation efforts that aim to preserve already degraded ecosystems, shaped by shifted ecological baselines.
Richard K. F. Unsworth, Blaise Bullimore, Leanne C. Cullen‐Unsworth, Benjamin L. H. Jones   +3 more
wiley   +1 more source

Mapping South Baltic Near-Shore Bathymetry Using Sentinel-2 Observations

Polish Maritime Research, 2017
One of the most promising new applications of remote observation satellite systems (RO) is the near-shore bathymetry estimation based on spaceborn multispectral imageries.
Chybicki Andrzej
doaj   +1 more source

The VOLNA code for the numerical modelling of tsunami waves: generation, propagation and inundation [PDF]

, 2011
A novel tool for tsunami wave modelling is presented. This tool has the potential of being used for operational purposes: indeed, the numerical code \VOLNA is able to handle the complete life-cycle of a tsunami (generation, propagation and run-up along ...
Dias, Frédéric, Dutykh, Denys, Poncet, Raphaël   +2 more
core   +5 more sources