ULTIMO AGGIORNAMENTO BANCA DATI: 13/09/2024 13:00:57
In this paper, we provide an overview of ocean color products derived from the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar-orbiting Partnership (SNPP), which was launched on October 28, 2011. VIIRS ocean color products include normalized water-leaving radiance ...
This paper submits the results of the acoustic cruise made in the austral summer of 2016. The survey delivers the bottom bathymetry, the geographic distribution of krill concentrations, and the presence of fish shoals in 1,500 nautical miles over the shelf and the continental slope (100–500 m), around ...
Science is an important part of human life. It is the application process and the construction of knowledge regarding a phenomenon of nature. Scientific development and technology management are the basis for national development, social progress, and an important indicator of overall competitiveness ...
The Peruvian Marine Research Institute — IMARPE, has been conducting scientific hydroacoustic survey since 1983 in order to estimate the biomass of the main pelagic resources for fishing management. The multifrequency analysis used for species identification was recommended in 2000 by the International ...
A temporal change of lights from islands on the South China Sea was monitored by the Day/Night Band (DNB) of the visible infrared imaging radiometer (VIIRS) on the Suomi-NPP from 2014 to 2016. As the DNB data could be contaminated by the lunar lights reflected by clouds for half of each month, the DNB ...
The spatiotemporal fluctuation of flying squid resources from July to November in 2009 to 2014 and its relationship with ocean environmental variables are analyzed with the GAM model in this study. The most suitable SST, SLA and Chla are 16–18°C, 0.5–4 cm and 0.25–0.3 mg/m3, respectively. The model ...
The Sargasso Sea has been a ocean life habitat for millions of years, yet accurate assessment of the boundary area and detection of these relatively small sea surface features using Landsat series and Moderate resolution Imaging Spectroradiometer (MODIS) instruments have been found to have difficulty ...
The Juan Fernandez archipelago is located along an east-west ridge in the southeastern Pacific Ocean, off the coast of central Chile. It consists of three oceanic islands organized into two subsystems: Alejandro Selkirk (AS), Robinson Crusoe and Santa Clara (RC-SC). The marine ecosystem of this island ...
In 2016 the Argentine Institute for Fisheries Research (INIDEP) initiated the building of a new Fisheries and Oceanographic Research Vessel at the Armon shipyards, in Vigo, Spain. The new R/V, named Victor Angelescu after one of the pioneers in Fisheries science in Argentina, was designed and built ...
Underwater acoustics have an unrealized potential for multicomponent ecosystem characterization. A variety of methods (e.g., backscattering differences, clustering, Gaussian model) are currently used for multifrequency classification. In this study we propose and implement a new method based on the ...
In Argentina, stock assessment of Patagonian scallop (Zygochlamys patagónica) is carried out applying the swept area method using a dredge. Hence, for the accuracy of the biomass estimation contact of the dredge with the bottom is critical. Generally during these surveys the dredge contact with the ...
Typical career development of engineers and scientists differs between countries. In some countries, people must pursue an industrial career before they become eligible for an academic one, in other countries people can start an academic career following their university graduation. This paper describes ...
Scrutiny and analysis of multi-frequency digital echograms are the basis of modern fisheries acoustics biomass estimations. Currently, several data formats and dedicated software exists for this purpose, however commercial options tends to be expensive. Moreover, acoustic analysis is complex, and besides ...
Using TASA fishing vessels on the Peruvian coast during the period 2007 to 2016, the Oxygen Minimum Zone (OMZ) was determined through echograms obtained using a digital echo sounders ES60 and ES70 SIMRAD. The purse-seine fleet operates during two seasons per year for anchovy fishing as well as in fishing ...
The target strength (TS) of a species is a variable used for the biomass estimation, this force is a measurement of the received echo or reflected energy of the species, given by the sound wave transmission generated by the echo sounder. The objective of this work is developing the TS of the Peruvian ...
OceanNet is a Long Range Wi-Fi based system that has been designed to provide internet services for fishermen who venture into the sea for several days together as far as 60 kms and beyond. Internet availability would enable options such as onshore communication (text and calls) using VOIP, localization ...
Lake whitefish (Coregonus clupeaformis) are an ecologically, economically, and culturally important species to the native and non-native fishers of Lake Huron, Canada. Studying the effects of anthropogenic activity on lake whitefish is of utmost importance to ensure this species remains viable in its ...
The Visible Infrared Imaging Radiometer Suite (VIIRS) collects two styles of low light imaging data at night, enabling the detection of electric lighting and combustion sources. NOAA operates two near-real time processing chains to exploit the low light imaging data collected by VIIRS. One is focused ...
Two experiences of target strength measurement of Sprattus fuegensis carried out through two differentiated ex situ methodological approaches “fish group” and “individual mark”. Both experiences were carried out on board of the artisanal vessel Huracán I The system used were (S1) conformed by a 38 Khz ...
Tuna are an important source of food and protein. Among this group of fishes, seven species represent 90% of the global catches and the main species is the skipjack (Katsuwonus pelamis) with a total production of over three million ton. We worked on a Skipjack Fishery Improvement Project in the Brazilian ...