All 122 images of the sea floor in the H11995 study area collected on R/V Rafael cruise 2011-006-FA with the mini SEABOSS system are included. The file-naming convention used includes a three-number abbreviation for the study area (995), an underscore, followed by the station number, the picture letter from that station, and the resolution (tn for thumbnail, mr for medium resolution, and fr for full resolution). For instance, 995_1bmr.jpg is an image from H11995 study area, station 1, picture b, in medium resolution.
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Information unavailable from original metadata. Assumed to be USGS.
Publication_Date: unknown
Title: Information unavailable from original metadata.
Type_of_Source_Media: Information unavailable from original metadata.
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20110615
Source_Currentness_Reference: Information unavailable from original metadata.
Source_Citation_Abbreviation: Information unavailable from original metadata.
Source_Contribution:
The Mini SEABOSS (SEABed Observation and Sampling System) was designed specifically for the USGS Woods Hole Science Center's 26-foot research boat Rafael. This system is equipped with two video cameras, a digital still camera, and a Van Veen grab sampler. This system, weighing approximately 185 lbs, can be used to depths up to 40 meters. The grab itself is raised and lowered with a 3/16-inch Aramid fiber winch-line with a breaking strength of 5,600 pounds. The davit is secured when the Mini SEABOSS is in the water. The electrical cable is on a spring-wound take-up reel with electrical slip rings that is mounted aft of the sampler. This arrangement protects the 0.38-in. multi-conductor cable and keeps the Mini SEABOSS correctly oriented with the boat. This multi-conductor cable enables communication between the ship's lab and the Mini SEABOSS system. The digital camera, a Minolta Dimage 7Hi, is mounted in a machined Delrin housing with a flat port and is set for 2560 x 1920 pixel images at the "fine" setting for compression. This allows the camera to be used for over 200 images with a 1 GB Compact Flash card without downloading. The system also has a 50 Watt/second flash unit powered by 8 AA batteries. Two battery-powered lasers are set 15 cm apart for scale measurements. The red laser dots can usually be seen in the photo depending on the bottom type and the distance to the sea floor. A third battery powered laser is positioned at an angle so that when it intersects the other lasers, the Mini SEABOSS is at the optimum height off the bottom for a still photograph. The camera is set to a manual focus and set to a default focus distance once the camera is powered up. The default focus distance is slightly less than the optimum height above the seafloor to account for optical distortion under water.
Process_Step:
Process_Description:
The USGS Mini SEABOSS system was deployed to capture still photos and video in the H11995 study area in Rhode Island Sound. This 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. The third laser on the system was set to an angle such that the optimum photograph height was 60 cm. The default focus on the camera was set to 50 cm. The imaged area is most often within .3 to 1 meter from left to right. Other camera settings are as follows: aperture is set at f/8; shutter speed is 1/250 second; digital Effects settings are Color +1, Contrast +1, and Filter +1 (Warming). The camera time is set to GMT. A total of 122 images of the seafloor were acquired. Although the images themselves have no georeferencing information, the navigation related to each photograph is available in an ESRI formatted shapefile: 2011-006_995botphotos.shp. This data can be downloaded from the following locations:
http://pubs.usgs.gov/of/2012/1004/data/botphotos/2011-006_995botphotos.zip;
http://pubs.usgs.gov/of/2012/1004/html/catalog.html.
Contact_Information:
Contact_Person_Primary:
Contact_Person: Charles Worley
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2250
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: cworley@usgs.gov
Process_Step:
Process_Description:
The digital images were recorded on a flash card within the camera. Because this was a fairly short cruise, with few photos, the images were not transferred from the camera until post-cruise, back in the lab. This transfer was accomplished by removing the card from the camera and using a card reader connected to a Mac OSX system.
Process_Date: 2011
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Charles Worley
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2250
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: cworley@usgs.gov
Process_Step:
Process_Description:
The original JPEG images were renamed from the sequential, camera automatic filename to a filename reflecting station location. This was done for each individual file in Windows Explorer.
Process_Date: 2011
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Larry Poppe
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02536
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2314
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: lpoppe@usgs.gov
Process_Step:
Process_Description:
The full-resolution JPEG images (2560 x 1920 pixels) were downsampled using Photoshop CS to create JPEG images with medium resolution (600 x 450 pixels) and thumbnails (150 x 113 pixels). The filename indicates the image resolution. For instance, the full-resolution JPEG image, 995_1afr.jpg, was downsampled to produce medium-resolution JPEG image, 995_1amr.jpg, and thumbnail 995_1atn.jpg.
Process_Date: 2011
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Katherine McMullen
Contact_Organization: U.S. Geological Survey
Contact_Position: Field and Laboratory Technician
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2277
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: kmcmullen@usgs.gov
Process_Step:
Process_Description:
Edits to the metadata were made to fix any errors that MP v 2.9.32 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The orignal metadata only had source information time period of content and source contribution. In order to pass the metadata harvester, the rest of the required source information fields were populated. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.
Process_Date: 20160520
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description: USGS Thesaurus keywords added to the keyword section.
Process_Date: 20180720
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description: Crossref DOI link was added as the first link in the metadata.
Process_Date: 20191118
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200908
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
