Data Access Form

Dataset Title:	FED Demersal Fish and Habitat Visual Survey, Data and Video
Institution:	NOAA/NMFS/SWFSC/FED (Dataset ID: fed_HAGE_VisualSurvey)
Information:	Summary \| License \| Metadata \| Background \| Subset \| Files \| Make a graph

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Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

url

name (File Name)

lastModified (UTC)

2024-07-02T20:27:02Z

2024-07-03T00:19:11Z

size (bytes)

1.5136642E7

4.703008781E9

fileType

Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

File type: (more information)

(Documentation / Bypass this form )

(Please be patient. It may take a while to get the data.)

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  url {
    String ioos_category "Identifier";
    String long_name "URL";
  }
  name {
    String ioos_category "Identifier";
    String long_name "File Name";
  }
  lastModified {
    String ioos_category "Time";
    String long_name "Last Modified";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  size {
    String ioos_category "Other";
    String long_name "Size";
    String units "bytes";
  }
  fileType {
    String ioos_category "Identifier";
    String long_name "File Type";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "diana.watters@no.gov, tom.laidig@oaa.gov";
    String creator_name "Diana Watters, Tom Laidig";
    String history 
"The orginal video files were converted to the present mp4 format using Handbrake with the command \"HandBrakeCLI -Z \"Fast 1080p30\"\"
2025-03-14T04:52:19Z (local files)
2025-03-14T04:52:19Z https://coastwatch.pfeg.noaa.gov/erddap/tabledap/fed_HAGE_VisualSurvey.html";
    String infoUrl "https://www.fisheries.noaa.gov/west-coast/science-data/habitat-and-groundfish-ecology-research-california-current";
    String institution "NOAA/NMFS/SWFSC/FED";
    String keywords "corals, human-occupied vehicle, remotely operated vehicle, rockfish, seafloor habitat, sponges, submersible, towed camera sled, video survey, visual survey";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String sourceUrl "(local files)";
    String subsetVariables "fileType";
    String summary 
"Since 1992, the Southwest Fisheries Science Center's Habitat and Groundfish
Ecology team has conducted visual surveys using submersible vehicles to quantify demersal
fish communities in deep seafloor habitats that are typically inaccessible to bottom trawls.
Data are collected from strip transects recorded with video and still cameras. To date, this
georeferenced dataset contains 460,000 individual fishes and 201 taxa, including 242,000
rockfishes (genus Sebastes) comprising 55 species, recorded from more than 2,000 transects
at depths 25-1,200 meters, primarily off California. Other data include estimated fish total
lengths, habitat, and in situ depth and temperature. The data have applications for a variety
of research topics, including ecology, distribution modeling, essential fish habitat, and stock
assessment. Videos from the surveys are available for download in mp4 format and
searchable by location, depth, species observed, and other factors.

This project was born out of a need to collect habitat-specific information on
rockfish abundance and ecology that cannot be obtained by traditional survey methods,
such as bottom trawling.";
    String title "FED Demersal Fish and Habitat Visual Survey, Data and Video";
  }
}

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its selection constraints (external link)

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

(easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.