Marine geophysical data exchange format-- MGD77 (bathymetry, magnetics, and gravity)

Cover of: Marine geophysical data exchange format-- MGD77 |

Published by U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Data and Information Service, National Geophysical and Solar-Terrestrial Data Center in Boulder, Colo .

Written in English

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Subjects:

  • Marine geophysics.

Edition Notes

Book details

Statementcompiled by the MGD77 Task Group.
SeriesKey to geophysical records documentation -- no. 10.
ContributionsNational Geophysical and Solar-Terrestrial Data Center.
The Physical Object
Paginationv, 18 p. :
Number of Pages18
ID Numbers
Open LibraryOL17720291M

Download Marine geophysical data exchange format-- MGD77

Marine Trackline Geophysical Data Exchange Format - "MGD77/MGD77T" Airborne Magnetic Surveys Exchange Format - "MAG88T" Contour Data Shapefiles: GEODAS-NG Software application Hydro-Plot can be used to view contoured data in ESRI shapefile format.

Get this from a library. The Marine geophysical data exchange format-'MGD77': bathymetry, magnetics and gravity. [Allen M Hittelman; Robert C Groman; Richard T Haworth; Troy L Holcombe; Graig McHendrie; Stuart M Smiht; MGD77 Task Group.;] -- Formalization of the results of the Workshop for Marine Geophysical Data Formats held in Boulder, Colo.

on January COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

The digital format presented, and referred to as "MGD77" or “MGD77T”, is an exchange format for marine geophysical data (bathymetry, magnetics, gravity and seismic navigation). The format is intended to be used for the transmission of data to and from a data center and may be useful for the exchange of data between marine.

2. Methods. The primary objective of this methodology is to build an ASCII archive file in GMT’s tabular (DAT) format from which a valid archive file in MGD77T (i.e., the Marine Geophysical Data Exchange Format, Hittleman et al., ), MGD77 + (Wessel and Chandler, ), or legacy MGD77 format is generated via technique is comprised of two constructive components: data Cited by: 1.

The MGD77 data format was first developed in the s by the National Geophysical Data Center (NGDC) to exchange digital underway geophysics data. Today, it is used as an exchange format for geophysical data, which includes magnetics, bathymetry, gravity, and seismic navigation.

MGD77 files are created from raw data collected by marine. The digital format presented, and referred to as "MGD77", is an exchange format for marine geophysical data (bathymetry, magnetics, gravity and seismic navigation) It is intended to be used for the transmission of data to and from a data center and may be useful for the exchange of data between marine institutions.

MGD77 file is an MGD77 Format Data. The MGD77 (Marine Geophysical Data Exchange) format is a character-based exchange format for marine geophysical data.4/5(26). Description. mgd77list reads MGD77 files and produces an ASCII [or binary] table. The MGD77 files contain track information such as leg-id, time Marine geophysical data exchange format-- MGD77 book position, geophysical observables such as gravity, magnetics, and bathymetry, and control codes and corrections such as Eotvos and diurnal corrections.

If nothing is specified we return all cruises in the data base. (See mgd77info -L for agency and vessel codes). If no file extension is given then we search for files with one of the four known extensions. The search order (and the extensions) tried is MGD77+ (“.nc”), MGD77T (“.m77t”), MGD77 (“.mgd77”) and plain text file (“.dat”).

GEODAS was conceived originally infollowing publication of the marine geophysical data-exchange format known as MGD77 (Hittelman and others, ). This format superseded an earlier exchange format, which was developed in by an ad hoc working group for the Ocean Science Committee of the National Academy of Sciences/National Research.

MGD77 filer er skabt af rå data indsamlet af marine forskere studere undersøiske dybde af sø og havbunder. Dataene gemmes i InfoBank, en struktureret informationslagringsordning for databaser og software, og eksporteres derefter i MGDformatet for at overføre data til og fra et datacenter til analyse.

Results Data - MGD77 (Marine Geophysical) Export Bathymetry and Magnetometer data to the Marine Geophysical Data Exchange Format "MGD77". This format contains position, water depth and magnetic field strength. Results Data – QPS PRO. Export node positions to a QPS Line Database file (*.PRO).

This file format is native to Terramodel. This dilemma was recognized by Wessel and Chandler [] who developed an errata-based system for correcting trackline data stored in NGDC's Marine Geophysical Data Exchange Format (MGD77).

The. Marine Geophysical Data base at the international data exchange format MGD77 for national and international data sets (bathymetry, gravimetry, magnetism) come from the Research Vessels of IFREMER.

Originators: Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Geophysics Department. MGD77 is an exchange format for marine geophysical data (bathymetry, magnetics, and gravity). It is intended to be used for the transmission of data to and from a data center and may be useful for the exchange of data to and from a data center and may be useful for the exchange of data between marine institutions.

Datendatei im MGDFormat (Marine Geophysical Data Exchange) gespeichert. enthält geophysikalische Daten im ASCII-Textformat; Umfasst die Vermessungs-ID, das Datum, die Magnetfelddaten, die Zeitzone, die beobachteten Schwerkraft- Breiten.

mgd77sniffer scans old (pre-Y2K) and new format MGD77 files for errors using point-by-point sanity checking, along-track detection of excessive slopes, and optional comparison of cruise data with global gravity and predicted bathymetry grids.

Detected data problems are output by default as verbose descriptions of each detected error, often. The digital format presented, and referred to as “MGD77”, is an exchange format for marine geophysical data (bathymetry, magnetics, and gravity) It is intended to be used for the transmission of data to and from a data center and may be useful for the exchange of data to and from a data center and may be useful for the exchange of data.

mgd This results in all 27 MGD77 fields being written out in the official MGD77 order. mgd77t. This results in all 26 MGD77T fields being written out in the official MGD77T order. all. as mgd77 or mgd77t but time is written as a single date-time string.

geo. Compare cruise data to the specified grid in Sandwell/Smith Mercator format. Requires a valid MGD77 field abbreviation (see MGD77 FIELD INFO below) followed by a comma, the path (if not in current directory) and grid filename, a scale to multiply the data (1 or ), and mode which stand for the following: (0) Img files with no constraint code.

Description: MGD77 file is an MGD77 Format Data. The MGD77 (Marine Geophysical Data Exchange) format is a character-based exchange format for marine geophysical data. The Marine geophysical data exchange format-'MGD77': bathymetry, magnetics and gravity.

Published Date: This publication contains summary information on the digital marine geophysical data holdings of the National Geophysical and Solar-Terrestrial Data Center.

The general description of the bathymetric, magnetic, and gravimetric data. We announce the completion of 5, errata correction tables which remove extreme, obvious errors from the National Geophysical Data Center's marine geophysical trackline archive. Along with a rang.

MGD77 Task Group,The Marine Geophysical Data Exchange Format - MGD77, Key to Geophysical Records documentation No. 10, National Geophysical and Solar-Terrestrial Data. mgd77 - MGD77 Format Data.

The MGD77 data files are related to 77 file is an MGD77 Format Data. The MGD77 (Marine Geophysical Data Exchange) format is a character-based exchange format for marine geophysical data.

Vad är en MGDfil. Datafil sparad i Marine Geophysical Data Exchange (MGD77) format; innehåller geofysiska data i ASCII-textformat; innehåller undersöknings ID, datum, magnetikdata, tidszon, observerad gravitation, latitud och longitud koordinater och vatten djup.

Preamble The mgd77 supplement is an attempt to (1) improve on the limited functionality of the existing mgg supplement, (2) incorporate some of the ideas from Scripps’ gmt+ supplement by allowing extra data columns, and (3) add new capabilities for managing marine geophysical trackline data stored in an architecture-independent CF and COARDS-compliant netCDF file format.

The marine geophysical data exchange format -'MGD77': KGRD In NOAA, EDIS, Boulder, Colorado, p. GEOphysical DAta System (GEODAS) -an online data. Preamble The mgd77 supplement is an attempt to (1) improve on the limited functionality of the existing mgg supplement, (2) incorporate some of the ideas from Scripps' gmt+ supplement by allowing extra data columns, and (3) add new capabilities for managing marine geophysical trackline data stored in an architecture-independent CF and.

WOCE data sets should be supplied in the General Format, GF3. For other purposes than WOCE, bathymetric data can be also provided in the Marine Geophysical Data Exchange Format, MGD Complete format descriptions of both, GF3 and MGD77, can be obtained from: Marine Information and Advisory Service (MIAS), Institute of Oceanographic Sciences.

Attributes are obtained from MGD77T data files created from the navigation and bathymetry best files. MGD77T is the standard, defined data format used for geophysical data in the National Geophysical Data Center.

The MGD77T format contains more attributes than defined here. Attributes that were null for this data were not included. In order to make data available to NGDC, and from there into GMA and VO, the data must be reformatted into a standard exchange format and published.

Ina group of geophysical data managers from the public and private sectors developed the MGD77 format as the standard exchange format for geophysical data.

The community of data producers might collaborate on a standard that stipulates required metadata (for example, Marine Geophysical Data Exchange Format - MGD77). A project with multiple types of data may have overlapping needs not fulfilled by a particular standard.

Skip to Article Content; Skip to Article Information. If nothing is specified we return all cruises in the data base. (See mgd77info -L for agency and vessel codes). The ".mgd77" or ".nc" extensions will automatically be appended, if needed (use -I to ignore certain file types).

Kaj je datoteka MGD77. Podatkovna datoteka, shranjena v formatu Marine Geophysical Data Exchange (MGD77); vsebuje geofizikalne podatke v besedilnem formatu ASCII; vključuje identifikacijsko številko, datum, magnetne podatke, časovni pas, opazovano težo, koordinate zemljepisne širine in dolžine ter globino vode.

The Marine Geophysical Data Exchange Format - 'MGD77', Compiled by the MGD77 Task Group KGRD No. 10, National Geophysical and Solar-Terrestrial Data Center, September Groman, R. and J. Dunworth, Cruise Data Report R/V ATLANTIS II 93 Leg 7. WHOI Reference No. Groman, R. The MGD77T format added three quality codes for bathymetry (bqc), magnetics (mqc), and gravity (gqc).

They are not present in the original MGD77 format, and if requested will return 9 or NULL. See Also mgd77convert(1), mgd77info(1), mgd77manage(1), mgd77track(1) References.

Binary MATLAB vendor format. MBSystem: Multibeam data formats from various manufacturers that can be read with the open source MBSystem package: MGD Marine Geophysical Data Exchange Format developed in - an ASCII file format for marine geophysical data (bathymetry, magnetics, and gravity).

MGDS:Nav. Format NGDC normally uses "The Marine Geophysical Data Exchange Format - 'MGD77'" (Hittelman and others, ) for exchange and storage. However, data submitted in any other format are acceptable provided that the format is well documented.

Documentation on MGD77 is available from NGDC by mail or via ftp from the WHP SAC (see Appendix A).file_format file_format_long description info_url ASCII Text File (ASCII) Text file format. Should contain a header describing contents of the file, including units.The bathymetry trackline data are presented in six ASCII data files, and the digital bathymetry data are presented in a single data file.

Data Format: Trackline Data. Because no other "standard" format was available, the Marine Geophysical Data Exchange Format (MGD77) was used to .

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