Sea Floor Mapping using the Data of Forward Looking Sonar and Side-Scan Sonar around the Hydrothermal Sites, South Mariana Trough

Multibeam sea floor mapping technologies have provided the capability to accurately, and cost effectively, image large areas of the seabed. Imagery provides base maps of sea floor topography from which targeted surveys can be planned to map sea floor sediments and associated benthic communities. Over the last five years extensive multi-disciplinary surveys have been carried out on Browns, German and Georges Banks. The government of Canada entered into a partnership with the scallop industry to map bathymetry, surficial sediments and benthic communities. The new knowledge has been used by industry, and has implications for fisheries management. Associations between substrate type and benthic community composition have enabled precise maps of scallop habitat to be produced and links between scallop abundance and substrate to be established. The environmental and economic benefits have been immediate, with reduced effort to catch set quota, less bottom disturbance, and containment of fishing activity to known scallop grounds. Stock assessments and management practices are improved. Other pilot projects in Atlantic Canada and the northeastern USA have demonstrated the value of integrated sea floor mapping in designating marine protected areas (The Gully, Stellwagen Bank), in identifying offshore hazards such as landslides, in siting offshore structures, cables and pipelines, and in addressing environmental issues such as the routing of outfalls and disposal of dredge materials. In recognition of the power of these new tools and digital map products, Canada is considering development of a national mapping strategy to provide the foundation for sustainable ocean management in the 21st century.

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Evaluation of the Klein HydroChart 3500 interferometric bathymetry sonar for NOAA sea floor mapping

OCEANS 2015 - MTS/IEEE Washington ◽

10.23919/oceans.2015.7401818 ◽

2015 ◽

Cited By ~ 1

Author(s):

Yuhui Ai ◽

Straud Armstrong ◽

Dean Fleury

Keyword(s):

Sea Floor ◽

Sea Floor Mapping

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Investigations of the deep-sea floor by side-scan sonar techniques: central eattern Pacific

Deep Sea Research ◽

10.1016/0146-6291(77)90569-0 ◽

1977 ◽

Vol 24 (11) ◽

pp. 975-985 ◽

Cited By ~ 6

Author(s):

James E. Andrews ◽

James D. Craig ◽

Wilton A. Hardy

Keyword(s):

Deep Sea ◽

Side Scan Sonar ◽

Sea Floor

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AKUMULASI TAILING DASAR LAUT DI PERAIRAN TELUK SENUNU DAN SEKITARNYA, SUMBAWA BARAT

JURNAL GEOLOGI KELAUTAN ◽

10.32693/jgk.9.3.2011.210 ◽

2016 ◽

Vol 9 (3) ◽

pp. 185

Author(s):

Yogi Noviadi ◽

Prijantono Astjario

Keyword(s):

Key Words ◽

Data Interpretation ◽

Southern Coast ◽

Seismic Record ◽

Side Scan Sonar ◽

Disposal Area ◽

Tailings Disposal ◽

Sea Floor ◽

Outer Pipe

Teluk Senunu terletak di pantai selatan Kabupaten Sumbawa Barat, Provinsi Nusa Tenggara Barat. Daerah ini merupakan kawasan pembuangan tailing dari PT Newmont Nusa Tenggara (NNT). Hasil pemeruman di lokasi penyelidikan di sekitar alur pipa tailing memperlihatkan kedalaman dasar laut di sekitar Teluk Senunu bervariasi, pada kedalaman 0 sampai dengan 100 meter dijumpai pada jarak sekitar 3 - 3,25 km dari garis pantai. Keberadaan pipa tailing terluar berada pada kedalaman sekitar 120 meter dari permukaan dasar laut, dan posisi penempatan tailing ini terletak di kawasan Ngarai dengan kedalaman lebih dari 125 meter. Berdasarkan hasil penafsiran data Side Scan Sonar dijumpai adanya 3 jalur pipa tailing yang berada di permukaan dasar laut dengan penyebaran tailing secara lateral melebar sepanjang 1,5 km sejajar dengan tebing Ngarai Senunu. Kata kunci : tailing, Teluk Senunu, Rekaman Seismik, Side scan sonar Senunu bay is located on the southern coast of West Sumbawa Regency, West Nusa Tenggara. This area is a tailings disposal area of the ??PT Newmont Nusa Tenggara (NNT). Results of sounding around the tailing pipe shows the depth of the seafloor around the Senunu bay vary, at a depth of 0 to 100 meters was found at a distance of about 3 to 3.25 km from the coastline. The outer pipe of tailings located at a depth of 120 meters from the sealevel, and tailings placement position is located in the gap with a depth of more than 125 meters. Based on the results of Side Scan Sonar data interpretation, the 3 pipelines of tailings on the sea floor with spread laterally along the 1.5 km wide parallel to the canyon cliffs of Senunu. Key words : tailing, Teluk Senunu, Seismic Record, Side scan sonar

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