JODC Bathymetry Integrated Random Dataset (J-BIRD)

This dataset consists of data digitized by JODC from various charts and maps, including nautical charts, GEBCO sheets, basic maps of the sea. The data includes soundings, bottom sediments, low water lines, contour lines and coastal lines. In addition, specific lines in the charts such as construction area and fish agriculture area were digitized since April 1993. Each data may be identified with the mark in the first column of data record. As of April 1993, J-BIRD has the following digitized plotting sheets.

Charts and Basic Maps of the Sea at a Scale of 1/10,000 or smaller for Coastal Area of Japan : 344 sheets
GEBCO Sheets at a Scale of 1/1,000,000 for the Northwest Pacific of 0 to 48 Degrees North and 100 to 180 Degrees East : 56 sheets

The volumes of J-BIRD data set are 650 M bytes.

Data Type:

Depth data (Smooth sheet)
Bottom sediment data
Coastal line data
Low water line data
Contour data of depth or height
Other line data (Construction area and fish agriculture area etc.)
Sediment thickness data
Depth data (MGD77)

Data Source	:	1 - 6 for Japan Coast Guard 7 for seismographic research institute 8 for domestic agencies and US NGDC
Geographic Area	:	1 - 6 for 0N, 100E - 48N, 180E 7 for Japanese areas 8 for Worldwide based on Japan
Time Period	:	1 - 6 for 1911 - 1998 7 for 1871, 1978, 1986 8 for 1953 - 1991
Data Volume	:	1,404 cruise Bathymetry----7,582,982 stations Geomagnetism--6,087,342 stations Gravity-------3,578,263 stations
Retrieval Key	:	Sheet No., Area, Data Types
Reference	:	Bathymetry Integrated Data Catalogue (March 1990)

[File Format] Click here to show this file format. (Dec. 1999 revised)

For any questions and comments, please contact us to the mail address to
jodc@jodc.gp.jp

Updated : January 28, 2003