Attachment 3 



The Iceberg Sighting 

 Data Base Contents 



The objective in creating an iceberg 

 sighting data base was to take the variety of 

 formats in which the data existed and place it 

 in one single format without any loss of data 

 definition. The set of sighting records with the 

 largest number of fields was used as the basis 

 for creating the iceberg sighting data base. 

 The following fields are included for each 

 record: 



- Iceberg number. This field contains a se- 

 quential numberforeach iceberg sighted within 

 each iceberg season (1 October to 30 Sep- 

 tember). 



DataBase Contents 



resight of a previous sighting. A "+" is used to 

 indicate the iceberg is an earlier sighting of a 

 resighted iceberg. A "D" is used to indicate the 

 last sighting of an iceberg. In some cases, the 

 first and last sighting of an iceberg are the 

 same. 



- Resight. A "Y" (for yes) or "N" (for No) is 

 entered in this field to indicate whether or not 

 the sighting was considered a resight of a 

 previously sighted iceberg. 



- Sighting Source. This column is used to 

 describe the source that reported the iceberg 

 to Ice Patrol. This column was first recorded 

 digitally in 1984 and the code was modified in 

 1989. The following code is used to describe 



- Sighting Index. This is a symbol used by the the sighting source: 

 model to indicate whether the iceberg is a 



Number 



1984-1988 



1989 to Present 



1 



2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 

 

 X 



Ice Patrol Aircraft 



Radar/SLAR 



Ice Patrol Aircraft Visual 



AES Aircraft Radar/SLAR 



AES Aircraft Visual 



Ship Report - Radar 



Ship Report - Visual 



Oil Industry Sources 



Lighthouse/Shore 



Defense Department Sources 



Other 



Unl^nown 



Ice Patrol Aircraft 



Radar/SLAR 



Ice Patrol Aircraft Visual 



AES Aircraft Radar/SLAR 



AES Aircraft Visual 



Other Air Reconnaissance * 



Ship Reports 



Lighthouse/Shore 



Defense Department Sources 



Other 



BAPS Iceberg " 



Unknown 



* - This category includes iceberg sighting 

 reports received from aircraft flying support for 

 the hydrocarbon industry operating on the 

 Grand Banks. 



** - The Canadian Atmospheric Environmen- 

 tal Service (AES) operates an iceberg drift 

 prediction model called BAPS. When ice- 

 bergs drift south of 52 North they will report the 

 predicted positions to Ice Patrol and Ice Patrol 

 will enterthe sighting in our iceberg drift model. 



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