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U.S. Geological Survey Open-File Report 2010–1005

Surficial Geology of the Sea Floor in Long Island Sound Offshore of Plum Island, New York

Bottom Photography

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Thumbnail image of figure 24 and link to larger figure. A map of the bottom photographs locations.
Figure 24. Location of bottom photographs taken on R/V Rafael cruise 09059 offshore of Plum Island, New York.

A total of 53 still photographs of the sea floor were obtained at 13 stations as part of this study (fig. 24). The small SEABOSS system was used to obtain 3 to 6 still photographs at each station as the R/V Rafael drifted over the seabed for 2 to 5 minutes approximately 50 cm off the bottom. The field of view of each image is approximately 50 cm wide.

Low-resolution images (150 x 113 pixels) of the photographs may be viewed by browsing the thumbnails in the photo gallery below. These thumbnails are hyperlinked to medium-resolution images (600 x 450 pixels) for more detailed viewing. Alternatively, the directory containing the full-resolution images (2560 x 1920 pixels) may be accessed by clicking here. These full-resolution images can be identified using the .jpg image names in galleries below. Textural analyses of samples obtained at these stations are provided in the Sediments section of this report.

Photo Gallery

Station  /   Lithologic Description

PI1   /   Intermixed patches of boulders, pebble- and cobble-sized gravel, and current-rippled sand. Boulders are overgrown with sponges and algae; mussel shells and shell debris are common.
A photograph showing the ocean floor with boulders.
PI1_1		 A photograph showing the ocean floor with gravel.
PI1_2		 A photograph showing the ocean floor with boulders.
PI1_3		 A photograph showing the ocean floor with boulders and gravel.
PI1_4

 
PI2   /   Current-rippled sand with mussel shells and shell hash collecting primarily in the ripple troughs. A few scattered boulders protrude through the sand.
A photograph showing the ocean floor with sand ripples.
PI2_1		 A photograph showing the ocean floor with sand ripples.
PI2_2		 A photograph showing the ocean floor with sand ripples.
PI2_3

 

A photograph showing the ocean floor with sand ripples.
PI2_4
PI3   /   Bouldery sea floor with intervening patches of current-rippled sand and patchy scattered mussel shells and shell debris. Boulders are overgrown with sponges, hydrozoans, seaweed, and anemones. Red starfish present.
A photograph showing the ocean floor with sand ripples and boulders.
PI3_1		 A photograph showing the ocean floor with sand ripples and boulders.
PI3_2		 A photograph showing the ocean floor with sand ripples and boulders.
PI3_3		  
A photograph showing the ocean floor with sand ripples and boulders.
PI3_4		 A photograph showing the ocean floor with sand ripples and boulders.
PI3_5

 

 

  
PI4   /   Boulders overgrown with seaweed and sponges. Some of the seaweed is live, growing kelp. Rippled sand with scattered mussel shells and burrows, and pebble- and cobble-sized gravel variably covers the sea floor between the boulders.
A photograph showing the ocean floor with seaweed growing on boulders.
PI4_1		 A photograph showing the ocean floor with seaweed growing on boulders.
PI4_2		 A photograph showing the ocean floor with seaweed growing on boulders.
PI4_3		  
A photograph showing the ocean floor with seaweed growing on boulders.
PI4_4		 A photograph showing the ocean floor with seaweed growing on boulders.
PI4_5

 

 

  
PI5   /   Current-rippled sand with shell debris concentrated in the ripple troughs. Hermit crabs are present.
A photograph showing the ocean floor with sand ripples and gravel.
PI5_1

 

 A photograph showing the ocean floor with sand ripples and gravel.
PI5_2

 

 A photograph showing the ocean floor with sand ripples and gravel.
PI5_3


 
PI6   /   Rippled and megarippled sand on flanks of a sand wave with sparse to dense shell and shell hash patches. Large numbers of congregating spider crabs; cancer and hermit crabs are present. Station was sited in the trough of a large sand wave.
A photograph showing the ocean floor with sand ripples, shell hash, and crabs.
PI6_1		 A photograph showing the ocean floor with sand ripples, shell hash, and crabs.
PI6_2		 A photograph showing the ocean floor with sand ripples, shell hash, and crabs.
PI6_3


A photograph showing the ocean floor with sand ripples, shell hash, and crabs.
PI6_4
PI7   /   Flat to undulating sandy bottom with scattered burrows and a few shells. Animal tracks and spider and hermit crabs are present.
A photograph showing the ocean floor with flat sandy surface.
PI7_1

 

 A photograph showing the ocean floor with flat sandy surface.
PI7_2

 

 A photograph showing the ocean floor with flat sandy surface.
PI7_3

 

  
PI8  /   Current-rippled sand with mussel shells and debris. Cancer and spider crabs are present and scour occurs around larger shells.
A photograph showing the ocean floor with sandy ripples and shell hash.
PI8_1		 A photograph showing the ocean floor with sandy ripples and shell hash.
PI8_2		 A photograph showing the ocean floor with sandy ripples and shell hash.
PI8_3


A photograph showing the ocean floor with sandy ripples and shell hash.
PI8_4
PI9   /   Boulders overgrown primarily with sponges, anemones, and soft corals. Rippled sand with scattered mussel shells and pebble- and cobble-sized gravel variably cover the sea floor between the boulders.
A photograph showing the ocean floor with boulders covered with sponges and rippled sand with shell hash.
PI9_1		 A photograph showing the ocean floor with boulders covered with sponges and rippled sand with shell hash.
PI9_2

 

 A photograph showing the ocean floor with boulders covered with sponges and rippled sand with shell hash.
PI9_3


 
PI10   /   Faintly rippled sea floor of gravelly sand and pebble-sized gravel. Crepidula and mussel-shell debris is common; spider crabs, burrows, and starfish are present.
A photograph showing the ocean floor with faintly rippled sand and shell hash.
PI10_1		 A photograph showing the ocean floor with faintly rippled sand and shell hash.
PI10_2

 

A photograph showing the ocean floor with faintly rippled sand and shell hash.
PI10_3


A photograph showing the ocean floor with faintly rippled sand and shell hash.
PI10_4
PI11   /   Rippled sand with mussels, mussel shells, and shell debris common. Scour is evident around many of the shells. Starfish are present. Station becomes bouldery along transect; boulders are colonized by anemones and sponges.
A photograph showing the ocean floor with scoured surface.
PI11_1		 A photograph showing the ocean floor with scoured surface.
PI11_2		 A photograph showing the ocean floor with scoured surface.
PI11_3
 A photograph showing the ocean floor with scoured surface.
PI11_4
A photograph showing the ocean floor with scoured surface.
PI11_5		 A photograph showing the ocean floor with scoured surface.
PI11_6

 

 

PI12   /   Boulders colonized by sponges, seaweed, anemones, hydrozoans, and barnacles. Pebble- and cobble-sized gravel and sand variably cover the sea floor between the boulders. Living mussels and mussel-shell debris are common; red starfish are present.
A photograph showing the ocean floor with boulders covered with sponges,seaweeed, and anemones.
PI12_1		 A photograph showing the ocean floor with boulders covered with sponges,seaweeed, and anemones.
PI12_2		 A photograph showing the ocean floor with boulders covered with sponges,seaweeed, and anemones.
PI12_3

 
Images of bottom photo.
PI12_4

 

 A photograph showing the ocean floor with boulders covered with sponges,seaweeed, and anemones.
PI12_5

 

 
PI13   /   Flat to undulating sand and pebble-sized gravel. Hermit crabs, spider crabs, animal tracks, shells and shell debris, and burrows are present.
A photograph showing the ocean floor with flat surface.
PI13_1		 A photograph showing the ocean floor with flat surface.
PI13_2

 

A photograph showing the ocean floor with flat surface.
PI13_3

 

 

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