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The Brazilian Santos basin underwater soundscape monitoring project (PMPAS-BS).

Authors :
Moreira Lima, José Antonio
Soares Filho, William
Xavier, Fabio C.
Pires de Paula, Thiago
Spengler, Angela
Gonçalves de Almeida, Fernando
Correa Pereira, Diogo Peregrino
Souza Rego, Valéria
Galotta, Cátia
Corrêa Junior, Carlos
Bazyl, Alexandre
Source :
Frontiers in Marine Science; 2024, p1-16, 16p
Publication Year :
2024

Abstract

This paper describes the Santos Basin Underwater Soundscape Monitoring Project (PMPAS-BS), a Brazilian ocean soundscape monitoring initiative. The main objective of the project is to quantify and assess hydroacoustic noise of anthropogenic origin in a large sedimentary basin extending from 23° S to 28° S on the southeastern Brazilian continental margin of the South Atlantic Ocean. Noise associated with oil and gas (O&G) exploration and production activities is the primary target, but this oceanic region also has busy shipping lanes for commercial, military, and fishing vessels. The two main hubs of Brazil’s export and import of goods by sea are located in this region: Santos and Rio de Janeiro ports. The project has three measurement components: mobile monitoring based on gliders and drifting acoustic profilers, fixed shallow-water monitoring based on acoustic measurements at coastal stations near shipping lanes associated with exploration and production activities in the Santos Basin, and fixed oceanic monitoring based on deep-water mooring lines equipped with passive autonomous acoustic recorders near production units, shipping lanes, and areas with lower intensity of O&G activities (pristine or reference sites). Numerical modeling of anthropogenic underwater acoustic noise has also been included as a fourth project component. The PMPAS-BS covers an area of more than 251,000 km² and uses several instruments with different methods and sensors for acoustic measurements. Its results provide current sound levels over a very large region of the western South Atlantic, both in areas more and less affected by anthropogenic activities. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
22967745
Database :
Complementary Index
Journal :
Frontiers in Marine Science
Publication Type :
Academic Journal
Accession number :
178198097
Full Text :
https://doi.org/10.3389/fmars.2024.1416590