Data Access Form

Dataset Title:	RV Sikuliaq : Position Seapath 380+ : Speed Over Ground : 600 s binned
Institution:	UAF (Dataset ID: sog_kmperhr_gnsspo112593_600sbin)
Information:	Summary \| License \| Metadata \| Background \| Make a graph

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Variable	Optional Constraint #1		Optional Constraint #2		Minimum	Maximum
time (UTC)
spot_time (UTC)
spot_value (km/hr)
mean (Speed Over Ground Mean, km/hr)
stddev (Speed Over Ground Stddev, km/hr)
minimum (km/hr)
maximum (km/hr)
median (Speed Over Ground Median, km/hr)
num_values (unitless)

Server-side Functions

distinct()

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File type: (more information)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  spot_time {
    String ioos_category "Time";
    String long_name "Spot Time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  spot_value {
    String ioos_category "Statistics";
    String long_name "Speed Over Ground Spot_Value";
    String short_name "sog_spot_value";
    String special_notes "Binning type: linear";
    String standard_name "platform_speed_wrt_ground_spot_value";
    String units "km/hr";
  }
  mean {
    String ioos_category "Statistics";
    String long_name "Speed Over Ground Mean";
    String short_name "sog_mean";
    String special_notes "Binning type: linear";
    String standard_name "platform_speed_wrt_ground_mean";
    String units "km/hr";
  }
  stddev {
    String ioos_category "Statistics";
    String long_name "Speed Over Ground Stddev";
    String short_name "sog_stddev";
    String special_notes "Binning type: linear";
    String standard_name "platform_speed_wrt_ground_stddev";
    String units "km/hr";
  }
  minimum {
    String ioos_category "Statistics";
    String long_name "Speed Over Ground Minimum";
    String short_name "sog_minimum";
    String special_notes "Binning type: linear";
    String standard_name "platform_speed_wrt_ground_minimum";
    String units "km/hr";
  }
  maximum {
    String ioos_category "Statistics";
    String long_name "Speed Over Ground Maximum";
    String short_name "sog_maximum";
    String special_notes "Binning type: linear";
    String standard_name "platform_speed_wrt_ground_maximum";
    String units "km/hr";
  }
  median {
    String ioos_category "Statistics";
    String long_name "Speed Over Ground Median";
    String short_name "sog_median";
    String special_notes "Binning type: linear";
    String standard_name "platform_speed_wrt_ground_median";
    String units "km/hr";
  }
  num_values {
    String ioos_category "Statistics";
    String long_name "Speed Over Ground Num_Values";
    String short_name "sog_num_values";
    String special_notes "Binning type: linear";
    String standard_name "platform_speed_wrt_ground_num_values";
    String units "unitless";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String contributor_name "RV Sikuliaq";
    String contributor_role "Data collector";
    String creator_name "CORIOLIX, RDESC, RCRV Project, Oregon State University";
    String creator_url "http://ceoas.oregonstate.edu";
    String history 
"2026-05-02T14:10:49Z (source database)
2026-05-02T14:10:49Z https://coriolix.sikuliaq.alaska.edu/erddap/tabledap/sog_kmperhr_gnsspo112593_600sbin.html";
    String infoUrl "https://www.uaf.edu/cfos/sikuliaq/";
    String institution "UAF";
    String keywords "atmosphere, data, observations, ocean";
    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 "(source database)";
    String standard_name_vocabulary "CF standard name";
    String summary 
"Speed Over Ground 600 s binned time series data.
Vessel: RV Sikuliaq. Sensor Model: Kongsberg Seatex Seapath 380 heading, attitude and positioning sensor series
Sensor S/N: PU112593
Sensor Location Onboard: Main Mast
Sensor Description: The Seapath 380 series uses a state-of-the-art dual-frequency GNSS receiver, inertial technology and processing algorithms to provide surveyors with the best possible accuracy in position, attitude and timing. All available GPS, GLONASS, Galileo, Beidou and QZSS satellites are used in the position solution.
Parameter Description: Speed the vessel is moving with respect to the earths surface.";
    String title "RV Sikuliaq : Position Seapath 380+ : Speed Over Ground : 600 s binned";
  }
}

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.

ERDDAP, Version 2.23
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