(Quick Reference)

1 Introduction - Reference Documentation

Authors: John Cartwright, John LaRocque, Evan McQuinn, Rob Prentice, Ken Tanaka, Lisa Taylor, Tess Thyer, Kris Woyna

Version: 1.1.1

1 Introduction

The Gazetteer Application

The General Bathymetric Chart of the Oceans (GEBCO) Sub-committee on Undersea Feature Names (SCUFN) maintains and makes available the International Hydrographic Organization (IHO)-Intergovernmental Oceanographic Commission (IOC) GEBCO Gazetteer of Undersea Feature Names. SCUFN was formed to meet the need for a uniform policy for the standardization of undersea feature names and to facilitate the consistent naming on bathymetric maps and nautical charts. In addition to maintaining the Gazetteer, SCUFN provides detailed naming guidelines and standard nomenclature used to define undersea features (e.g., canyon, plateau, fracture zone) and considers new undersea feature name proposals at yearly meetings.

For more information, please visit the GEBCO website.

The public interface to the Gazetteer provides the ability to search for, view, and download information about undersea feature names. This guide describes a publicly available (RESTful) programming interface that can be used to access this publicly available information.

A login feature is available for the use of privileged users to maintain and alter information about undersea feature names. Details regarding the policies and procedures associated with these tasks are available upon successful login.

Please email questions and comments to: gazetteer@ngdc.noaa.gov.

Gazetteer Interface

The Gazetteer interface consists of a central map pane with a detail pane beneath it. To the left is a search pane that is initially populated with a list of all undersea feature names. Various search criteria, specified in the upper end of the search pane, can be used to narrow the list, as can the map extent tool that is accessible at the top of the map. Features in the list or visible on the map can be selected, at which point detail information about that feature appears in the details pane. The map automatically moves to center any selected feature, and can be zoomed with the '+' and '-' buttons.

Undersea Feature Characteristics

Undersea feature names are characterized in terms of the fields listed in the following table. Definitive information regarding characterization of undersea feature names is available in the IHO-IOC publication B-6 "Standardization of Undersea Feature Names” available for download in multiple languages from the International Hydrographic Organization Bathymetric Publications web page: http://www.iho.int/iho_pubs/IHO_Download.htm. Not all characteristics have been specified for all features.

FieldDescription
Specific TermThis text field is the unique name or names associated with an undersea feature.
Generic TermThis selectable field is the undersea feature type (e.g., seamount, trough, ridge). Available generic terms are defined in the IHO-IOC publication B-6 "Standardization of Undersea Feature Names” available for download in multiple languages from the International Hydrographic Organization Bathymetric Publications web page: http://www.iho.int/iho_pubs/IHO_Download.htm.
ProposerThis selectable field indicates the individual or organization that submitted the undersea feature name for consideration by the GEBCO Subcommittee on Undersea Feature Names (SCUFN). The list of available proposer contacts is maintained by the Gazetteer Administrator.
Year_of_ProposalThis field contains the (4-digit) year that an individual or organization submitted the undersea feature name for consideration by the GEBCO Subcommittee on Undersea Feature Names (SCUFN).
DiscovererThis selectable field indicates the individual, ship or organization that first discovered the undersea feature. The list of available discoverer contacts is maintained by the Gazetteer Administrator.
Year_of_DiscoveryThis field contains the (4-digit) year that the individual, ship or organization first discovered the undersea feature.
Associated MeetingThis selectable field indicates the GEBCO Subcommittee on Undersea Feature Names (SCUFN) meeting where the undersea feature was last considered. The list of available discoverer contacts is maintained by the Gazetteer Administrator.
Origin of NameThis free text field contains a description of why the specific term of the undersea feature name was chosen.
Additional InformationThis free text field contains any information about the undersea feature name that is not included in the other fields (e.g., information about ship instrumentation or associated features).
Minimum DepthThis numeric field contains the minimum depth of the feature in meters.
Maximum DepthThis numeric field contains the minimum depth of the feature in meters.
Total ReliefThis numeric field contains the difference (maximum minus minimum depths) of the undersea feature, in meters.
Dimension/SizeThis free text field contains a description of the relative size, shape and orientation of the undersea feature (e.g, '7 Km long, trending in a north-south direction, conical, etc.).
Primary GeometryThis field contains coordinates that minimally define the location and extent of the undersea feature in Well Known Text format (e.g., the point that delineates the summit of a seamount). What is well-known-text?
Secondary GeometryThis field contains coordinates that serve to define the location and extent of the undersea feature in Well Known Text format in more detail than those of the primary geometry (e.g., the polygon that delineates the base of a seamount). What is well-known-text?
Editor's RemarksThis free text field contains comments from the editor and administrator about the undersea feature editing process.

User Login

A user login is not required to search for, view, or download information about undersea feature names. User accounts are obtainable by contacting the Gazetteer Administrator. An account provides a username by which the owners of proposed changes are identified, and provides a password through which authorization for privileged access can be verified. An account also identifies the role that a particular user will take within the Gazetteer: ' editor ' or ' admin '.

Clicking the login button at the upper right of the window brings up a login screen, by which a user can login. After login, this button changes into a logout button.

At present, the Gazetteer deployment environment issues a security warning that must be worked around manually when logging in or logging out. The exact nature of these messages will depend upon the particular browser that you are using.

  • On Firefox , you will be notified that the connection is untrusted. Click on "I understand the risks", on "Add Exception", and lastly on "Confirm security exception". You will then be able to use the application normally.</li>
  • On Chrome , you may see a notice that this site's security certificate is not trusted. Click on "Proceed anyway". You'll then see a small shield icon on the upper right of the window. Click on it and select "Load unsafe script". You will then be able to use the application normally.
  • On Internet Explorer , you may be notified that content is not being displayed because of security certificate errors. Select "Show all content" once. The page will reload. You can then dismiss the popup security dialog and proceed to use the application.