This table is created from the Tbl_40.txt and Tbl_41.txt files as prepared by
INSROP Project I.4.2 as part of INSROP Phase 2. The table records refer to the
center point of the coastal ice regions included in the Tbl_39 shapefile set,
which is a part of the dataset provided by INSROP Project I.4.2.
Dates of landfast ice breakup
The final landfast ice breakup date corresponds to the time when landfast ice
is divided into drifting ice over the entire region. Along the NSR, 19 regions
were defined differing in the character of landfast ice formation and breakup
/INSROP Working Paper no. 10-1995/.
The series of landfast ice breakup dates in each region were obtained from
data of ice airborne and satellite observations for the period 1949-1997. Based on
these data, average dates and frequency of occurrence of 10-day periods were
calculated and the earliest and the latest dates were selected.
Path: <NSR_DATA>\icesnow\i_4_2
Table type: DText table.
* Fast Ice Breakup - Frequency of occurrences
19 records, 15 descriptive fields.
Fields: [<Name>] -- <Alias> (type of field)
[Region_no] -- "Region No." (Numeric, no decimals)
[Num_obs] -- "Number of Observations" (Numeric, no decimals)
[May_21_31] -- "May 21-31" (Numeric, no decimals)
[Jun_01_10] -- "June 01-10" (Numeric, no decimals)
[Jun_11_20] -- "June 11-20" (Numeric, no decimals)
[Jun_21_30] -- "June 21-30" (Numeric, no decimals)
[Jul_01_10] -- "July 01-10" (Numeric, no decimals)
[Jul_11_20] -- "July 11-20" (Numeric, no decimals)
[Jul_21_31] -- "July 21-31" (Numeric, no decimals)
[Aug_01_10] -- "August 01-10" (Numeric, no decimals)
[Aug_11_20] -- "August 11-20" (Numeric, no decimals)
[Aug_21_31] -- "August 21-31" (Numeric, no decimals)
[Sep_01_10] -- "September 01-10" (Numeric, no decimals)
[Sep_11_20] -- "September 11-20" (Numeric, no decimals)
[Sep_21_30] -- "September 21-30" (Numeric, no decimals)
Fast Ice Breakup - Frequency of occurrences