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USGS CMG "Activity ID" Definition

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  • This documents CMG's Field Activity ID formats.

  • Multiple IDs may be associated with a single Field Activity.

  • The Activity-ID represents an activity (usually field work) by a unique character string.

ActivityIDDefinition

An InfoBank Activity-ID has four components
CMG InfoBank
Field Activity ID
P-L-YY-RR
or
P-LL-YY-RR
Platform A single letter abbreviation of the platform's full name.
Leg A number (1-2 alphanumerics) corresponding to a "cruise" or "leg" for a particular platform in a particular year.
Year The last two digits of the year the activity started.
Region A 2-letter abbreviation of the general activity area.    Disclaimer  

Ex:  J-4-92-SF  or  J492SF
     J         = platform   ("Johnston" or "Jordan")
       4       = leg        (4th cruise for this platform in 1992)
         92    = year       (1992)
            SF = region     (San Francisco area)

  • Each component can be separated by a hyphen.
  • Ex:  J-4-92-SF and J492SF represent the same activity.
    
  • The hyphenated Activity-ID is preferable for readability and is used as the first component in file names.
  • The non-hypendated Activity_ID version is for convenience and is used for directory names.

  • Unsure of what letter to use for the platform component? -- check defined platforms.
  • Unsure of what letters to use for the region component? -- check defined regions.
  • Unsure of what naming convention to use for a geodetic survey? -- check defined geodetic Activity-ID names.
  • Unsure of what thumbnail map boundary limits to use for the Activity ID? -- check thumbnail boundary limits.

  • Constructing a new ID rarely conflicts with an existing ID.
  • If this occurs, first consider using an alternate "region" component.
  • If it still conflicts, contact InfoBank staff for advice and assistance.

  • For example, below is a list of some of the activities within the USGS CMG InfoBank:
     
       F-1-88-SC  or F188SC    = Farnella, Leg  1, 1988, Southern California
    
       F-12-88-NC or F1288NC   = Farnella, Leg 12, 1988, Northern California
    
       J-3-82-TB  or J382TB    = Johnston, Leg  3, 1982, Tomales Bay
    
       L-3-80-NP  or L380NP    = Lee,      Leg  3, 1980, North Pacific
    

Modified CMG InfoBank Activity ID for Geodetic Surveys
CMG InfoBank
Field Activity ID
for Geodetic Surveys
S-S#-YY-RR
Site A 2-letter abbreviation of the site's full name.
Count A sequentially assigned counter (1..9, then A..Z) for each visit to a site in a particular year.
Year The last two digits of the year the activity started.
Region A 2-letter abbreviation of the general activity area.

Standardized CMG InfoBank Activity ID Pseudonyms exist for:
Woods Hole
Science Center
Field Activity ID (new)
YYYY-###-FA
Year The 4-digit year the activity started.
Number A 3-digit, sequentially assigned data source serial number.
Data Source A 2-character data source code (FA = Field Activity).
Woods Hole
Science Center
Field Activity ID (old)
YY###
Year The last two digits of the year the activity started.
Number A unique, sequentially assigned 3-digit number.
Woods Hole
Science Center
AKA (old)
PPPPYY###
Platform 4-character platform ID
Year The last two digits of the year the activity started.
Number A unique, sequentially assigned 3-digit number.
CMG
Geodetic
Total Station ID
YYMMDDO
Year The last two digits of the year the activity started.
Month 2-digit month number.
Day 2-digit day number.
Order A single letter representing the sequential order of sites visited that day (e.g., A=1st, B=2nd, C=3rd...)
St. Petersburg
Science Center
Field Activity ID
YYPPP##
Year The last two digits of the year the activity started.
Project 3-letter abbreviation for the project the data were collected for.
Event 2-digit event tag representing a discreet leg or time period of fieldwork.

"We all have the extraordinary coded within us, waiting to be released." -- Jean Houston

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Page Last Modified: Mon Nov 4 03:37:25 PST 2013  (chd)