Results 61 to 70 of about 56,657 (315)

Combining multibeam and single beam echosounders for quantifying gas bubble release from the seafloor

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Marine gas bubble release is a worldwide phenomenon that impacts the local marine ecosystem and contributes to carbon fluxes with respect to global warming. It is still challenging to assess gas flow for large seep areas (tens of km2), but recent advances in calibrating and processing multibeam echosounder (MBES) data make this problem ...
P. Urban   +2 more
wiley   +1 more source

Evaluation of the Accuracy of Bathymetry on the Nearshore Coastlines of Western Korea from Satellite Altimetry, Multi-Beam, and Airborne Bathymetric LiDAR

open access: yesSensors, 2018
Bathymetric mapping is traditionally implemented using shipborne single-beam, multi-beam, and side-scan sonar sensors. Procuring bathymetric data near coastlines using shipborne sensors is difficult, however, this type of data is important for maritime ...
Yeon Yeu   +3 more
doaj   +1 more source

Smoothness priors modeling of seafloor bathymetric data

open access: yesGeophysical Research Letters, 1990
Multibeam bathymetric data is modeled from a Bayesian “smoothness priors” framework. Smoothness priors is a penalized likelihood‐nonparametric linear regression form of modeling and the bathymetry data are modeled one beam at‐a‐time. The method is applied to data previously analyzed in Goff and Jordan (1988) and Gilbert and Malinverno (1988).
openaire   +1 more source

Bathymetric data of JialongCo in the Himalaya

open access: yes, 2022
Bathymetric measurements of JialongCo in the Himalaya: Raster interpolated by using Kriging geo-statistics ...
openaire   +1 more source

High resolution bathymetric survey on the NW slope of Walvis Ridge, offshore Namibia [PDF]

open access: yes, 2011
Expedition 17/1 of the German research vessel R/V MARIA S. MERIAN, carried out geophysical surveys and experiments between November and December 2010 in the area around Walvis Ridge, Southeast Atlantic Ocean.
Behrmann, Jan H.   +2 more
core  

Predicting potential Arctic kelp distribution and lower‐depth biomass from seafloor irradiance

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Kelps have an extensive distribution in Arctic coastal waters. However, quantifying their role in the Arctic food web and carbon cycle is challenged by the scarcity of documented geographical distribution, standing stocks and production. Here we present a framework based on an empirical function to predict the potential kelp distribution and ...
Laura Castro de la Guardia   +13 more
wiley   +1 more source

The planktonic food web in the Gulf of Naples based on the analysis of carbon and nitrogen stable isotope ratios

open access: yesMarine Ecology, EarlyView., 2023
Abstract Plankton play a key role in marine food webs by producing and transferring organic matter and energy to higher trophic levels. To define the trophic structure and interactions within the planktonic communities in the Gulf of Naples, we determined carbon and nitrogen stable isotope ratios in particulate organic matter (POM, <20 μm ...
Louise Merquiol   +2 more
wiley   +1 more source

An Assessment of Waveform Processing for a Single-Beam Bathymetric LiDAR System (SBLS-1)

open access: yesSensors, 2022
The single-beam bathymetric light detection and ranging (LiDAR) system 1 (SBLS-1), which is equipped with a 532-nm-band laser projector and two concentric-circle receivers for shallow- and deep-water echo signals, is a lightweight and convenient ...
Yifu Chen   +4 more
doaj   +1 more source

Free “Cook Book” for gridding bathymetric data [PDF]

open access: yesEos, Transactions American Geophysical Union, 2013
The International Hydrographic Organization (IHO) and the General Bathymetric Chart of the Oceans (GEBCO) program of the United Nations Educational, Scientific and Cultural Organization's Intergovernmental Oceanographic Commission (UNESCO IOC) have created a free manual to help users prepare quality bathymetric grids from available data points. The new
openaire   +1 more source

Design and Implementation of an Extensible Variable Resolution Bathymetric Estimator [PDF]

open access: yes, 2011
For grid-based bathymetric estimation techniques, determining the right resolution at which to work is essential. Appropriate grid resolution can be related, roughly, to data density and thence to sonar characteristics, survey methodology, and depth.
Calder, Brian R., Rice, Glen
core   +1 more source

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