L908NC_video_observations

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?
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• 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?
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  1. Are there legal restrictions on access or use of the data?
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• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   Edwards, Brian, Phillips, Eleyne, Golden, Nadine, Krigsman, Lisa, and Dartnell, Pete, 2013, L908NC_video_observations:.

   This is part of the following larger work.

   Golden, Nadine E., 2012, California State Waters Map Series Data Catalog: Data Series DS 781, U.S. Geological Survey, Reston, VA.

   Online Links:

   • <https://pubs.usgs.gov/ds/781/>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -123.385458

   East_Bounding_Coordinate: -122.969477

   North_Bounding_Coordinate: 38.599295

   South_Bounding_Coordinate: 38.036613

3. What does it look like?

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

   Beginning_Date: 11-Aug-2008

   Ending_Date: 22-Aug-2008

   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 (1,917)

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

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257224.
      

7. How does the data set describe geographic features?

   L908NC_video_observations

   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

   StartofEnt

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

   Date of observation

   TIME

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

   Time of observation

   LATITUDE

   Latitude (Source: USGS)

   Range of values
   Minimum:	38.036613
   Maximum:	38.599295
   Units:	Decimal degrees; Southern Hemisphere values are negative.

   LONGITUDE

   Longitude (Source: USGS)

   Range of values
   Minimum:	-123.385458
   Maximum:	-122.969477
   Units:	Decimal degrees; Western Hemisphere values are negative.

   HEADING

   Bearing (Source: USGS)

   The angle measured in degrees in a clockwise direction from the north line.

   COURSE

   Not currently used (Source: USGS)

   Not currently used

   SPEED

   Not currently used (Source: USGS)

   Not currently used

   LOGENTRY

   Comments and notes manually recorded during an observation. (Source: USGS)

   Annotation

   MAJOR_GEO

   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

   MINOR_GEO

   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

   SLOPE

   A visual estimate of slope of the seafloor (Source: USGS)

   Value	Definition
   Low	Flat seafloor
   Medium	Not flat or extreme.
   High	Extreme rock face.

   ABIO_COMP

   Abiotic complexity (rugosity) or roughness of the seafloor. (Source: USGS)

   Value	Definition
   Low	No space available for potential refuge for both juvenile and adult species
   Medium	Some small holes and space available for potential refuge for both juvenile and adult species
   High	Large holes and spaces available for potential refuge for both juvenile and adult species

   BIO_COVER

   Biologic cover (Source: USGS)

   Value	Definition
   Low	No plant cover available for potential refuge for both juvenile and adult species
   Moderate	Some plant cover available for potential refuge for both juvenile and adult species
   High	High volume of plant cover available for potential refuge for both juvenile and adult species

   BIO_COMP

   Biologic Complexity (structure). (Source: USGS)

   Value	Definition
   Low	No plant cover available for potential refuge for both juvenile and adult species
   Moderate	Some plant cover available for potential refuge for both juvenile and adult species
   High	High volume of plant cover available for potential refuge for both juvenile and adult species

   ALGAE

   Algae observed on the seafloor (Source: USGS)

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

   ANEMON_AGG

   Aggregating anemone (Source: USGS)

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

   ANEMON_SOL

   Solitary anemone (Source: USGS)

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

   ANEMON_TUB

   Tube anemone (Source: USGS)

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

   ANTHRO

   Anthropogenic material (Source: USGS)

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

   ANTHRO_FG

   fishing gear (Source: USGS)

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

   ANTHRO_GG

   trawling gouge (Source: USGS)

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

   ANTHRO_PIP

   pipe (Source: USGS)

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

   BIO_HUMM

   biogenically hummocky terrain (Source: USGS)

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

   BIO_PLOW

   plow marks (biogenic) (Source: USGS)

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

   BIVALVE

   bivalve (Source: USGS)

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

   BLDR_ISO

   isolated boulder (Source: USGS)

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

   BOCCACIO

   Boccacci (Source: USGS)

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

   BODY_TRACE

   Body Trace (Source: USGS)

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

   BRACHIOPOD

   Brachiopods are marine animals that have hard "valves" (shells) on the upper and lower surfaces. (Source: USGS)

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

   BRYOZOAN

   Bryzoan (Source: USGS)

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

   BURROW_LG

   large burrow (Source: USGS)

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

   BURROW_SM

   small burrow (Source: USGS)

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

   CIRCLE_SCB

   circle scribe (biogenic current induced) (Source: USGS)

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

   COBBLE_ISO

   isolated cobble (outsized clast) (Source: USGS)

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

   COQUINA

   broken shells (Source: USGS)

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

   CORAL_AGG

   aggregating coral (Source: USGS)

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

   CORAL_ART

   articulated coral (Source: USGS)

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

   CORAL_ENC

   encrusting coral (Source: USGS)

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

   COWCOD

   fish (Source: USGS)

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

   CRAB

   Crab (Source: USGS)

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

   CRAB_CNCER

   cancer crab (Source: USGS)

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

   CRAB_GALA

   galatheid crab (Source: USGS)

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

   CRAB_HERMT

   hermit crab (Source: USGS)

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

   CRINOID

   Crinoid (Source: USGS)

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

   CRUSTACEAN

   Crustacean (Source: USGS)

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

   CURRENT

   Unknown (Source: USGS)

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

   CURRENT_BO

   current-bowed organism (Source: USGS)

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

   CURRENT_LN

   current lineation in sediment (Source: USGS)

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

   CURRENT_SC

   current scour in sediment (Source: USGS)

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

   CURRENT_SM

   current-smoother sediment (Source: USGS)

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

   DEPRESSION

   depression in sediment - occasionally feeding pits (Source: USGS)

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

   DRIFT_WEED

   detached algae or kelp (Source: USGS)

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

   EGGCAS_CHN

   chondrichthes egg case (Source: USGS)

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

   EGGCAS_MOL

   mollusc egg case (Source: USGS)

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

   FECAL_COIL

   fecal coil (Source: USGS)

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

   FISH

   Assignable fish key (Source: USGS)

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

   FISH_A

   placeholder fish species for on-the-fly identification (Source: USGS)

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

   FISH_B

   placeholder fish species for on-the-fly identification (Source: USGS)

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

   FISH_C

   placeholder fish species for on-the-fly identification (Source: USGS)

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

   FISH_D

   placeholder fish species for on-the-fly identification (Source: USGS)

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

   FLATFISH

   Flatfish (Source: USGS)

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

   GASTROPOD

   Gastropoda or gastropods (Source: USGS)

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

   GOBY

   Goby (Source: USGS)

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

   GORG_RED

   red gorgonian (Source: USGS)

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

   GORGONIAN

   gorgonian (Source: USGS)

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

   HYDROID

   hydroid (Source: USGS)

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

   INVERT

   invertebrate (Source: USGS)

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

   INVERT_A

   placeholder invertebrate species for on-the-fly identification (Source: USGS)

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

   INVERT_B

   placeholder invertebrate species for on-the-fly identification (Source: USGS)

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

   INVERT_C

   placeholder invertebrate species for on-the-fly identification (Source: USGS)

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

   INVERT_D

   placeholder invertebrate species for on-the-fly identification (Source: USGS)

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

   KELP

   kelp (Source: USGS)

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

   LEATHER

   leather star (Source: USGS)

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

   LINGCOD

   lingcod (Source: USGS)

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

   LOBSTER

   lobster (Source: USGS)

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

   MEDIASTER

   mediaster (Source: USGS)

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

   METRIDIUM

   metridium (Source: USGS)

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

   MOUND

   sediment mound - generally related to burrowing activity (Source: USGS)

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

   MUD_DRAPE

   sediment drape over bedrock (Source: USGS)

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

   MYSIDS

   shrimp in water column (Source: USGS)

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

   OCTOPUS

   octopus (Source: USGS)

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

   PISASTER

   piaster (Source: USGS)

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

   PIT_SHARP

   sharp feeding pit (Source: USGS)

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

   RATFISH

   ratfish (Source: USGS)

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

   RAY

   ray (Source: USGS)

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

   REDBRIT_IN

   red brittle stars in sediment (Source: USGS)

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

   REDBRIT_ON

   red brittle stars on sediment (Source: USGS)

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

   RIPPLE

   Rippled-like bedform in sediment (Source: USGS)

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

   RIPPLE_AS

   asymmetrical ripples (Source: USGS)

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

   RIPPLE_CF

   confused ripples (Source: USGS)

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

   RIPPLE_DG

   degraded ripples (Source: USGS)

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

   RIPPLE_MG

   Mega ripples (Source: USGS)

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

   RIPPLE_OC

   oscillatory ripples (Source: USGS)

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

   RIPPLE_SB

   subtle ripples (Source: USGS)

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

   RIPPLE_SH

   sharp-crested ripples (Source: USGS)

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

   ROCK_BROKE

   broken blocky rock (Source: USGS)

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

   ROCK_FRACT

   fractured rock (Source: USGS)

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

   ROCK_ISO

   rock island (in sediment) (Source: USGS)

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

   ROCK_SED

   sedimentary rock (Source: USGS)

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

   ROCK_TALUS

   rock talus (Source: USGS)

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

   ROCKFISH

   rockfish (Source: USGS)

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

   RP_MG_DG

   degraded megaripples (Source: USGS)

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

   RP_MG_SB

   subtle megaripple (Source: USGS)

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

   RP_MG_SH

   sharp-crested megaripple (Source: USGS)

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

   SAND_DOLLR

   sand dollar (Source: USGS)

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

   SCULPIN

   sculpin (Source: USGS)

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

   SEA_CUC

   sea cucumber (Source: USGS)

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

   SEA_HARE

   sea hare (Source: USGS)

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

   SEA_PEN

   pennatulid (Source: USGS)

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

   SEA_SLUG

   sea slug (Source: USGS)

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

   SEA_UND

   undetermined invert (Source: USGS)

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

   SEA_WHIP

   sea whip (Source: USGS)

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

   SED_DRAPE

   sediment draped over bedrock - bedrock presence inferred (Source: USGS)

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

   SHARK

   shark (Source: USGS)

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

   SHELL_SCAT

   scattered shells (Source: USGS)

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

   SHRIMP

   shrimp (Source: USGS)

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

   SKATE

   skate (Source: USGS)

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

   SPONGE_3D

   sponge three dimensional (Source: USGS)

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

   SPONGE_ENC

   encrusting sponge (Source: USGS)

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

   SQUID

   squid (Source: USGS)

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

   STAR_BASKT

   basket star (Source: USGS)

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

   STAR_BAT

   bat star (Source: USGS)

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

   STAR_SAND

   sand star (Source: USGS)

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

   STAR_SEA

   sea star (Source: USGS)

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

   STAR_SUN

   sun star (Source: USGS)

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

   STOMUS

   stomus (Source: USGS)

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

   TRACKTRAIL

   tracks and trails in sediment (biogenic) (Source: USGS)

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

   TUBE_WORM

   tube worm (Source: USGS)

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

   TUNICATE

   tunicate (Source: USGS)

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

   URCHIN

   urchin (Source: USGS)

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

   VIS_HI

   visibility >5 m (Source: USGS)

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

   VIS_LOW

   visibility <1 m (Source: USGS)

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

   VIS_MOD

   visibility <5 m (Source: USGS)

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

   VIS_POOR

   visibility >1/2 m (Source: USGS)

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

   WHTBRIT_IN

   white brittle stars in sediment (Source: USGS)

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

   WHTBRIT_ON

   white brittle stars on sediment (Source: USGS)

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

   Depth

   Depth Value (Source: USGS)

   Range of values
   Minimum:	-12.23
   Maximum:	-84.93
   Units:	Decimal meters below mean sea level.

   CLASS

   This seafloor-character class was produced using video-supervised maximum-likelihood classification of the bathymetry and backscatter (intensity of return) signals from sonar systems. Derivative roughness (rugosity) and backscatter intensity were used as variants in the classification. The substrate classes have been divided into the California Marine Life Protection Act depth zones and slope classes mapped in this area: Depth Zone 2 (intertidal to 30 meters), Depth Zone 3 (30 to 100 meters), Depth Zone 4 (greater than 100 meters), Slope Class 1 (0 to 5 degrees), Slope Class 2 (5 to 30 degrees), Slope Class 3 (30 to 60 degrees), and Slope Class 4 (60 to 90 degrees). Depth Zone 1 (intertidal) is not present in this map area (not included in this dataset). (Source: USGS)

   Value	Definition
   1	Smooth sediment
   2	Mixed sediment and smooth rock
   3	Rugose boulder and rock

   LINE

   Video observation camera line. (Source: USGS)

   Name or number of camera line

   TAPE

   MiniDV tape numbered consecutively throughout cruise. (Source: USGS)

   Name or number of tape

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Brian Edwards
   • Eleyne Phillips
   • Nadine Golden
   • Lisa Krigsman
   • Pete Dartnell

2. Who also contributed to the data set?

   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 and Kevin O'toole at the USGS Marine Facility (Santa Cruz, CA) contributed logistical support.
   

3. To whom should users address questions about the data?
   Brian Edwards
   U.S. Geological Survey, Coastal and Marine Geology
   Geologist
   345 Middlefield Rd.
   Menlo Park, CA 94025
   USA
   

   (650) 329-5488 (voice)
   (650) 329-5197 (FAX)
   bedwards@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 NOAA 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.

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?

   Point features present.

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:

Public domain data from the U.S. government is freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. This information is not intended for navigational purposes Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

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

   (831) 427-4730 (voice)
   (831) 427-4748 (FAX)
   ngolden@usgs.gov
   

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

   Downloadable Data

3. What legal disclaimers am I supposed to read?

   Please recognize the U.S. Geological Survey (USGS) as the source of this information.
   Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.
   The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.
   

4. How can I download or order the data?

Who wrote the metadata?

Dates:

Last modified: 02-Jul-2013
Last Reviewed: 2013

Metadata author:

U.S. Geological Survey, Coastal and Marine Geology
Attn: Nadine Golden
Geographer
USGS, 400 Natural Bridges Dr
Santa Cruz, CA 95060-5792

(831) 460-7530 (voice)
(831) 427-4748 (FAX)
ngolden@usgs.gov

Metadata standard:

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