| KONG Xiangpeng,CHEN Naxin. 2013. Impact of the slope angle of hummocks on the ride-up of finger ice in the Liaohe Estuary. Acta Oceanologica Sinica, 32(8):12－15 |
| Impact of the slope angle of hummocks on the ride-up of finger ice in the Liaohe Estuary |
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| Received:March 01, 2013 Revised:June 18, 2013 |
| DOI：10.1007/s13131-013-0336-y |
| Key words:sea-ice riding-up slope angle the Liaohe Estuary |
| 中文关键词: |
| 基金项目: |
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| Abstract: |
| The ride-up and pile-up of sea ice have effects on the ice load of marine structure. The ride-up angle is an important parameter to study the process of ride-up and to determine the possibility of the ride-up to occur. Some conclusions about the ride-up angle are drawn based on field-survey data in this paper. Thirty hummocks with full structure, formed by 0.4-1.6 cm ice layers, were investigated in the Liaohe Estuary of the north of Liaodong Bay. After analyzing the cross-sections of the pile-up body, some conclusions on the ride-up angle are reached. The results indicate that whether the ride-up occurs or not is associated with the slope angle of the hummock. If the slope angle is greater than 10.31° , the ride-up can take place. With the development of riding-up and piling-up, if the slope angle increases to 40.0° , the climbing-up process will stop and the drifting ice begins to accumulate in front of the hummock. The climbing process does not continue until a new slope angle, which is less than 28.0° , is formed. Meanwhile, the forming process of hummocks, which aremade up of 10.0 cmor 22.0 cmice layers, is proved to follow the rule. |
| 中文摘要: |
| The ride-up and pile-up of sea ice have effects on the ice load of marine structure. The ride-up angle is an important parameter to study the process of ride-up and to determine the possibility of the ride-up to occur. Some conclusions about the ride-up angle are drawn based on field-survey data in this paper. Thirty hummocks with full structure, formed by 0.4-1.6 cm ice layers, were investigated in the Liaohe Estuary of the north of Liaodong Bay. After analyzing the cross-sections of the pile-up body, some conclusions on the ride-up angle are reached. The results indicate that whether the ride-up occurs or not is associated with the slope angle of the hummock. If the slope angle is greater than 10.31° , the ride-up can take place. With the development of riding-up and piling-up, if the slope angle increases to 40.0° , the climbing-up process will stop and the drifting ice begins to accumulate in front of the hummock. The climbing process does not continue until a new slope angle, which is less than 28.0° , is formed. Meanwhile, the forming process of hummocks, which aremade up of 10.0 cmor 22.0 cmice layers, is proved to follow the rule. |
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