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| | Finnish Institute of Marine Research - Services |
 | | By mid-February, a large open water area had formed in the southern Bay of Bothnia, there was also open water in the Quark, ice in the inner skerries of the Sea of Bothnia, partly open water in the Archipelago Sea and an ice cover in the Gulf of Finland east of the island Motshnyj. |
 | | The greatest thickness of the fast ice was as follows: Bay of Bothnia 55-80 cm, Sea of Bothnia 30-40 cm, Archipelago Sea and the western Gulf of Finland 25-30 cm, and the eastern Gulf of Finland 35-45 cm. |
 | | The ice thickness at sea was 20-50 cm in the Bay of Bothnia, 10-20 cm in the Sea of Bothnia, and 10-45 cm in the Gulf of Finland. |
| www.fimr.fi /en/palvelut/jaapalvelu/2002.html (740 words) |
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