Video observations--Admiralty Inlet, Washington

Frequently anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   Cochrane, Guy R., 2015, Video observations--Admiralty Inlet, Washington:.

   This is part of the following larger work.

   Cochrane, Guy R., Dethier, Megan N., Hodson, Timothy O., Kull, Kristine J., Golden, Nadine E., Ritchie, Andrew C., Moegling, Crescent H., and Pacunski, Robert E., 2015, Southern Salish Sea Habitat Map Series--Admiralty Inlet: Scientific Investigations Map OFR 2015-1073, U.S. Geological Survey, Reston, VA.

   Online Links:

   • <https://pubs.usgs.gov/of/2015/1073/>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -122.891439

   East_Bounding_Coordinate: -122.603577

   North_Bounding_Coordinate: 48.265266

   South_Bounding_Coordinate: 48.062932

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Beginning_Date: 28-Jul-2008

   Ending_Date: 11-May-2009

   Currentness_Reference: ground condition

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: vector digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Entity point (1,721)

   2. What coordinate system is used to represent geographic features?

      The map projection used is NAD 1983 UTM Zone 10N.

      Projection parameters:

      Scale_Factor_at_Central_Meridian: 0.9996

      Longitude_of_Central_Meridian: -123.0

      Latitude_of_Projection_Origin: 0.0

      False_Easting: 500000.0

      False_Northing: 0.0

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000000002220024164500956
      Ordinates (y-coordinates) are specified to the nearest 0.000000002220024164500956
      Planar coordinates are specified in meter

      The horizontal datum used is D North American 1983.
      The ellipsoid used is GRS 1980.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257222101.
      

7. How does the data set describe geographic features?

   VideObs

   The shapefile includes vector point data of observed geologic and biologic features when each observation was taken. The shapefile can be added to any ESRI ArcMap project. (Source: USGS)

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the ArcGIS features

   UNIQUE_ID

   feature number used for statistical analysis. (Source: USGS)

   Sequential unique whole numbers.

   DATE

   mmddyyyy. Month, day, year format. (Source: USGS)

   Date of video observation.

   UTC_TIME

   Greenwich Mean Time (GMT) also commonly referred to as Coordinated Universal Time (UTC). (Source: USGS)

   Time of video observation start.

   LONGITUDE

   Longitude (Source: USGS)

   Range of values
   Minimum:	-122.8945
   Maximum:	-122.6043

   Coordinates defining the ArcGIS features

   LATITUDE

   Latitude (Source: USGS)

   Range of values
   Minimum:	48.0619
   Maximum:	48.2653

   Coordinates defining the ArcGIS features

   PrimClass

   Primary substrate constitutes greater than fifty percent of the seafloor during an observation. The values are based on the Wentworth scale except that granule and pebble sizes have been grouped together into a class called "gravel," and clay and silt sizes have been grouped together into a class called "mud." (Source: USGS)

   Value	Definition
   rock	Exposed bedrock
   boulder	25.5 cm or greater
   cobble	Between 25.5 cm and 6.5 cm
   gravel	Between 6.5 cm and .2 cm
   sand	Between .2 cm and .00625 cm
   mud	.00625 cm or smaller

   SecClass

   Secondary substrates constitute greater than twenty percent of the seafloor during an observation. The classes are based on the Wentworth scale except that granule and pebble sizes have been grouped together into a class called "gravel," and clay and silt sizes have been grouped together into a class called "mud." (Source: USGS)

   Value	Definition
   rock	Exposed bedrock
   boulder	25.5 cm or greater
   cobble	Between 25.5 cm and 6.5 cm
   gravel	Between 6.5 cm and .2 cm
   sand	Between .2 cm and .00625 cm
   mud	.00625 cm or smaller

   SUBST_CLAS

   CMECS substrate class. (Source: CMECS)

   Value	Definition
   Unconsolidated Mineral	Geologic substrates with less than 50% cover of Rock Substrate. This substrate class provides Folk (1954) terminology to describe any mix of loose mineral substrate occurring at any range of sizes from boulders to clay.
   Rock Substrate	Igneous, metamorphic, or sedimentary rock with Particle sizes greater than or equal to 4096 mm in any dimension that covers greater than or equal to 50% of the geologic substrate surface.

   SUBST_SBCL

   CMECS substrate subclass. (Source: CMECS)

   Value	Definition
   Bedrock	Substrate with largely continuous formations of bedrock covering 50% or more of the geologic substrate surface.
   Megagravel	Substrate where piles of rock with particle sizes greater than 4096 mm in any dimension cover greater than or equal to 50% of the geologic substrate surface.
   Megaclasts	Substrate where individual rocks with particle sized greater than or equal to 50% of the geologic substrate surface.
   Coarse	Coarse unconsolidated substrate. Substrate surface layer contains any amount of gravel (particles greater than or equal to 2 mm) from a single granule to 100% boulders. These sediments are classified using the Folk (1954) Gravel-Sand-Mud diagram.
   Fine	Fine Unconsolidated Substrate. Substrate surface layer contains no trace of gravel (particles greater than or equal to 2 mm). These sediments are classified using the Folk (1954) Sand-Silt-Clay diagram, except that the word "Silt-Clay" replaces the word "Mud" in the Substrate Subgroup level. This prevents duplication of terms when recasting Folk's diagrams into a CMECS hierarchy.

   Actiniaria

   Order of animals in the Athozoa class. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Ascidiacea

   Class of animals in the Tunicata subphylum. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Asteriidae

   Family of sea stars. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Asteroidea

   Animals in the class of sea stars. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Balanophyl

   Animals from the genus of solitary corals. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Balanus

   Animals from the genus of barnacles. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Bivalvia

   Animals from a class of molluscs. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   bony_fish

   Any fish of the superclass Osteichthyes that is not on the list of specific fishes used for this project. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Brachiopod

   Animal from the shell fish invertebrate phylum Brachiopoda. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Bryozoa

   Animal from the mossy invertebrate phylum Bryozoa. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Cancer

   Animals from the crab genus Cancer. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Caridea

   Animal from the Decopoda order of shrimp. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Cerianthid

   Tube anemone from the family Ceriantidae. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Chlorophyc

   Green algae from the class Chlorophyceae. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Cottidae

   Fish from the family of Sculpins. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   driftweed

   Any detached drifting algae plant material. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   eggcase

   Casing that surrounds the fertilized eggs of sharks, skates, and chimaeras. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   encrusting

   Unidentifiable invertebrates that encrust hard substrate. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Gadiformes

   Fish from the order Gadiformes. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Gastropoda

   Snails from the Gastropoda class of Molluscs. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Henricia

   Animals from the genus of slender-armed sea stars. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Hexagrammo

   Fish from the greenling genus. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Holothuroi

   Animal from the sea slug genus. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Hydroida

   Animal from the hydroid order of Cnidarians. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Hydrolagus

   Fish from the family of Chimaeridae. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Hydrozoa

   Animals in the class of encrusting Cnidarians. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Laminarial

   Algae from the order of brown algaes. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Majidae

   Crab from the family Majidae. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Mediaster

   Sea star from the genus Mediaster. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Metridium

   Anemone from the genus Metridium. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Nudibranch

   Soft bodied gastropod from the group Nudibranchia. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Octopus

   Cephalopod mollusc from the order Octopoda. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Ophiurida

   Animal from the order of brittle stars. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Paguroidea

   Animal from the superfamily of Hermit Crabs. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Parasticho

   Animal from the Sea Cucumber genus. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Pectinidae

   Animal from the group of Scallops. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Phaeophyco

   Algae from the group Brown Algae. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   physical_object

   Object likely of anthropogenic origin. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Pisaster

   Sea Star from the genus Pisaster. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Pleuronect

   Fish from the genus of Flounders. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Porifera

   Animals from the phylum of Sponges. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Ptilosarcu

   Animal from the genus of Sea Pens. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Pycnopodia

   Animal from the genus of sunflower sea stars. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Rajiformes

   Fish from the order of flattened cartilaginous fishes related to sharks. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Rhodophyco

   Algae from group of red algae. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Sebastes

   Fish from the genus of Rockfish. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Solaster

   Animal from the family of Sunstars. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Stichaeida

   Fish from the family of Prickleback fish. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Strongylocentrotus_franciscanus

   Red Sea Urchin species. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Strongyloc

   Sea Urchin from the genus Strongylocentrotus. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Subsellifl

   Animal from the Sea Whip family. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   tubeworm

   Animal from the phylum Phoronida. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Zoarcidae

   Fish from the family of Eelpouts. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   Zostera_ma

   A matt of plants of the genus Zostera. (Source: USGS)

   Value	Definition
   0	Denote absence of the species or feature.
   1	Denote presence of the species or feature.

   DEPTH

   Depth of sea floor at the location of the observation. (Source: USGS)

   Range of values
   Minimum:	-136.4
   Maximum:	-3.2
   Units:	Decimal meters below NAVD88 sea level.

   SLOPE

   Slope of the sea floor at the location of the observation. (Source: USGS)

   Range of values
   Minimum:	0.05
   Maximum:	20.47
   Units:	Decimal degrees.

   VRM

   Vector ruggedness at the location of the observation (Source: USGS)

   Range of values
   Minimum:	0.0114
   Maximum:	0.1224
   Units:	Unitless, measures terrain ruggedness as the variation in three-dimensional orientation of grid cells within a neighborhood. Vector analysis is used to calculate the dispersion of vectors normal (orthogonal) to grid cells within the specified neighborhood. This method effectively captures variability in slope and aspect into a single measure. Ruggedness values in the output raster can range from 0 (no terrain variaton) to 1 (complete terrain variation). Typical values for natural terrains range between 0 and about 0.4.

   BPI

   Bathymetric position Index at the location of the observation. (Source: USGS)

   Range of values
   Minimum:	-6.867
   Maximum:	8.541
   Units:	Bathymetric position index (BPI) from the Benthic Terrain Modeler with scale of analysis at 120 m (orad), with 15 m annulus thickness (orad–irad).

   CRUISE_ID

   Video cruise ID. (Source: USGS)

   Identifation number for USGS Coastal and Marine Geology Program field data acquisition activity.

   BLOCK_ID

   Map block. (Source: USGS)

   Southern Salish Sea Habitat Map Series block number.

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Guy R. Cochrane

2. Who also contributed to the data set?

   For crusie T108PS the authors would like to thank Gary Greene, Steve Watt and Sam Johnson for data acquisition. For cruise K109WO the authors would like to thank Hank Chezar of the USGS Western Region Coastal and Marine Geology Program (in Santa Cruz and Menlo Park, CA) for field support and equipment support. Tim Elfers, Peter Harkin, Gerry Hatcher, and Pete Dal Ferro at the USGS Marine Facility (Santa Cruz, CA) contributed logistical support.
   

3. To whom should users address questions about the data?
   Guy R. Cochrane
   U.S. Geological Survey, Coastal and Marine Geology
   Geophysicist
   400 Natural Bridges Dr.
   Santa Cruz, CA 95060-5792
   USA
   

   (831) 460-7554 (voice)
   (831) 427-4709 (FAX)
   gcochrane@usgs.gov
   

Why was the data set created?

These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.

How was the data set created?

1. From what previous works were the data drawn?

2. How were the data generated, processed, and modified?

   Date: 2011 (process 1 of 1)

   The camera-sled tracklines were sited through video fed up to the research vessel in real time, where USGS and Tombolo scientists recorded both the geologic and biologic character of the seafloor. While the camera was deployed, observations were recorded for a 10-second period once every minute. Onshore, the observation comma-delimited text file was converted to an ArcGIS shapefile.

3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?

   Waterproof camera is submerged and connected to GPS receiver at the surface with Red Hen Systems VMS 300 hardware. Georeferenced video and still photos are collected. Visual observations are of variable unknown accuracy.

2. How accurate are the geographic locations?

   Highly variable, on the order of 10 meters. Horizontal position given is ship position. Towed camera can be on the order of 10 meters distance from the ship during deployment.

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

   Observation are from one minute intervals. Some gaps in observations are due to technical problems or sediment dispersion covering the camera lens.

5. How consistent are the relationships among the observations, including topology?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None

Use_Constraints:

This information is not intended for navigational purposes.
Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data. Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data.
Acknowledge the U.S. Geological Survey in products derived from these data.
Share data products developed using these data with the U.S. Geological Survey.
This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.

Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.

1. Who distributes the data set? (Distributor 1 of 1)
   U.S. Geological Survey, Coastal and Marine Geology Program
   Attn: Guy R. Cochrane
   Geophysicist
   USGS, 400 Natural Bridges Dr
   Santa Cruz, CA 95060-5792
   USA
   

   (831) 460-7554 (voice)
   (831) 427-4709 (FAX)
   gcochrane@usgs.gov
   

2. What's the catalog number I need to order this data set?

   Downloadable Data, USGS DS 935

3. What legal disclaimers am I supposed to read?

   This information is not intended for navigational purposes.
   This database has been approved for release and publication by the Director of the USGS.
   Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
   Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
   

4. How can I download or order the data?

Who wrote the metadata?

Dates:

Last modified: 15-Apr-2011
Last Reviewed: 2011

Metadata author:

U.S. Geological Survey, Coastal and Marine Geology
Attn: Guy R. Cochrane
Geophysicist
USGS, 400 Natural Bridges Dr
Santa Cruz, CA 95060-5792

(831) 460-7530 (voice)
(831) 427-4709 (FAX)
gcochrane@usgs.gov

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)