Application of side scan sonar in the detection of sunken oil in shallow sea

2017 ◽  
Author(s):  
Baojuan Li* ◽  
Wei An ◽  
Jianwei Li ◽  
Yupeng Zhao Xiaowei Shi ◽  
Weibo Wang ◽  
...  
Keyword(s):  
Shallow Sea ◽  
Side Scan Sonar ◽  
Sunken Oil

T/B APEX 3508: Best Practices for Detection and Recovery of Sunken Oil

2017 ◽  
Vol 2017 (1) ◽  
pp. 134-155 ◽  
Author(s):  
Mark Sawyer ◽  
Gregory Schweitzer ◽  
Adam Davis ◽  
Jim Elliott ◽  
Gary Mauseth ◽  
...  
Keyword(s):  
Best Practices ◽  
Mississippi River ◽  
The United States ◽  
Coast Guard ◽  
Transportation Safety ◽  
Hazardous Substance ◽  
Side Scan Sonar ◽  
Best Available Technologies ◽  
Lower Mississippi River ◽  
Sunken Oil

ABSTRACT On September 2, 2015, two towing vessels collided on the Lower Mississippi River at Mile 937, near Columbus, Kentucky, resulting in the complete breach of the #3 starboard cargo tank on the T/B APEX 3508 and the release of 120,588 gallons of clarified slurry oil (CSO; Group V oil; Specific Gravity: 1.14) into the navigable waterway. The incident was classified as a Major Inland Spill in accordance with the National Oil and Hazardous Substance Contingency Plan and a Major Marine Casualty that was jointly investigated by the United States Coast Guard and the National Transportation Safety Board. Over flights conducted as far as 20 miles downriver indicated only light, sporadic sheening for 1–2 days. On-water and shoreline assessments conducted up to six miles downriver revealed no visible signs of surface oiling. Based on its properties, the vast majority of the CSO was presumed to have sunk, but its precise disposition and location was not confirmed. Using side scan sonar (SSS) technology, two distinct subsurface anomalies with an approximate combined area of 9,200 m2 were identified on the river bed in the vicinity of the incident. The anomalies were confirmed as oil by divers and direct sampling, and were then divided into 25 m grids for identification and tracking. The Unified Command evaluated best available technologies and determined that GPS guided environmental dredging would be the safest, most effective and efficient of the recovery options. The established cleanup endpoint was a maximum of 10% sporadic oil distribution in each grid. Two endangered mussel species were identified as potentially inhabiting the affected area. A diver survey was conducted in the area and concluded that bottom habitat was not likely to support the listed species. Further consultations with the resource manager indicated that proposed recovery operations posed low risk to the species. Recovery operations commenced on September 15, 2015 and concluded on September 25, 2015. Endpoint verification was conducted via SSS. In total, response operations lasted 23 days (eight operational periods), involved over 120 responders and 75 specialized response assets, and cost approximately $5 million. Approximately 2,524 m3 of dredged material (liquid and solids) were removed. After decanting, approximately 1,730 m3of oiled solids representing approximately 50 to 75% of the spilled product was recovered. This case serves as a benchmark for sunken oil detection and recovery operations, and identified many best practices that should be considered on future cases with similar spill conditions.

Indian Rocks Beach side-scan sonar mosaic map

2000 ◽  
Author(s):  
S.E. Harrison ◽  
S.D. Locker ◽  
A.C. Hine ◽  
D.C. Twichell
Keyword(s):  
Side Scan Sonar ◽  
Mosaic Map

Overview of statewide geophysical surveys for ecosystem restoration in Louisiana

Shore & Beach ◽  
2020 ◽  
pp. 102-109
Author(s):  
Syed Khalil ◽  
Beth Forrest ◽  
Mike Lowiec ◽  
Beau Suthard ◽  
Richard Raynie ◽  
...  
Keyword(s):  
Data Collection ◽  
Monitoring Program ◽  
Barrier Island ◽  
Ecosystem Restoration ◽  
Coastal Protection ◽  
Side Scan Sonar ◽  
Island Restoration ◽  
Geophysical Surveys ◽  
Louisiana Coast ◽  
Almost All

The System Wide Assessment and Monitoring Program (SWAMP) was implemented by the Louisiana Coastal Protection and Restoration Authority (CPRA) to develop an Adaptive Management Implementation Plan (AMIP). SWAMP ensures that a comprehensive network of coastal data collection/monitoring activities is in place to support the development and implementation of Louisiana’s coastal protection and restoration program. Monitoring of physical terrain is an important parameter of SWAMP. For the first time a systematic approach was adopted to undertake a geophysical (bathymetric, side-scan sonar, sub-bottom profile, and magnetometer) survey along more than 5,000 nautical miles (nm) (excluding the 1,559 nm currently being surveyed from west of Terrebonne Bay to Sabine Lake) of track-line in almost all of the bays and lakes from Chandeleur Sound in the east to Terrebonne Bay in the west. This data collection effort complements the regional bathymetric survey undertaken under the Barrier Island Comprehensive Monitoring (BICM) Program in the adjacent offshore areas. This paper describes how a study of this magnitude was conceptualized, planned, and executed along the entire Louisiana coast. It is important to note that the initial intent was to collect bathymetric data only for numerical modelling for ecosystem restoration and storm surge prediction. Geophysical data were added for oyster identification and delineation. These first-order data also help comprehend the regional subsurface geology essential for sediment exploration to support Louisiana’s marsh and barrier island restoration projects.

A Preliminary Experiment on the Detection of Bubbles in the Sea with Side-Scan Sonar

2019 ◽  
Author(s):  
Keisuke Uchimoto ◽  
Makoto Nishimura ◽  
Ziqiu Xue ◽  
Yuji Watanabe
Keyword(s):  
Side Scan Sonar

Management of the Dutch Waddensea

1984 ◽  
Vol 16 (3-4) ◽  
pp. 485-495 ◽  
Author(s):  
D Vreugdenhil
Keyword(s):  
The Netherlands ◽  
Middle Ages ◽  
Human Activities ◽  
Nature Reserve ◽  
The Other ◽  
Hydrological Processes ◽  
Dutch Government ◽  
Shallow Sea ◽  
Management Objectives ◽  
Late Middle Ages

It was not until the late Middle Ages that the sea penetrated far into the interior of The Netherlands, thus flooding three quarters of a million hectares of land. Since then half a million hectares have been reclaimed from the sea. The Dutch Government chose to preserve the remaining quarter of a million hectares of shallow sea with mudflats of the Waddensea as a nature reserve. The management objectives are at one hand to preserve all characteristic habitats and species with a minimal interference by human activities in geomorphological and hydrological processes, and at the other hand to guarantee the safety against the sea of the inhabitants of the adjacent mainland and islands and to facilitate certain economic and recreational uses of the Waddensea without jeopardizing the natural qualities. These objectives are being elaborated in managementplans.

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