Feature Type Name
Thaw hole
Synonyms
Definition
Vertical hole in floating ice formed when a puddle melts through to the underlying water.
Comments
Table Name
THAW_HOLE
Australia's Implementation Table Names
The following have been used in the definition of this feature type
- Armstrong, T., Roberts, B. and Swithinbank, C. - Illustrated Glossary of Snow and Ice, Cambridge Press for Scott Polar Research Institute, 1966
The following have been used in categorising this feature type
| Code |
Name |
Definition |
|
Data type |
Values |
UoM |
Used by these Feature Types |
| 1042 |
Dataset_Id |
An unique identifier of the dataset the feature belongs to |
Mandatory |
number(4) |
|
|
Types
|
| 1045 |
Date_Capture |
The date the feature was captured |
Optional |
date |
|
|
Types
|
| 1249 |
Date_Flag |
The type of date been stored, i.e.whether the date is approximate or definite, and for which component of the date is approximate or definite. Also includes seasons |
Optional |
character(50) |
| label |
Definition |
| Appoximate day in a known month and year |
|
| Approximate month in a known year |
The entry must be a full date, e.g. 1/1/2002, but only the month and year are valid. |
| Approximate season of a known year |
The season must be an Antarctic summer, autumn, winter or spring season. Enter season date with the approximate date of the middle of the season. Eg for spring 2002, enter as 15/10/2002. |
| Approximate year |
The entry must be a full date, e.g. 1/1/2002, but only the year is valid. |
| Definite day, month and year |
|
| Definite month and year |
The entry must be a full date, e.g. 1/1/2002, but only the month and year are valid. |
| Definite season and year |
The season must be an Antarctic summer, autumn, winter or spring season. Enter season date with the approximate date of the middle of the season. Eg for spring 2002, enter as 15/10/2002. |
| Definite year |
The entry must be a full date, e.g. 1/1/2002, but only the year is valid. |
| Pre year |
The entry must be a full date, e.g. 1/1/2002, but only the year is valid. The data was sourced before the year listed. |
| Unknown |
Value indicating that an attribute is not applicable or that it is impossible to determine |
|
|
Types
|
| 1150 |
Q_Info |
An unique identifier pointing to additional data quality information not included in the metadata record. |
Mandatory |
number(5) |
|
|
Types
|