Glacier calving observed with time-lapse imagery and tsunami waves at Glaciar Perito Moreno, Patagonia
Calving plays a key role in the recent rapid retreat of glaciers around the world. However, many processes related to calving are poorly understood since direct observations are scarce and challenging to obtain. When calving occurs at a glacier front, surface-water waves arise over the ocean or a la...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2018-06-01
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| Series: | Journal of Glaciology |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S002214301800028X/type/journal_article |
| _version_ | 1811155895021731840 |
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| author | MASAHIRO MINOWA EVGENY A. PODOLSKIY SHIN SUGIYAMA DAIKI SAKAKIBARA PEDRO SKVARCA |
| author_facet | MASAHIRO MINOWA EVGENY A. PODOLSKIY SHIN SUGIYAMA DAIKI SAKAKIBARA PEDRO SKVARCA |
| author_sort | MASAHIRO MINOWA |
| collection | DOAJ |
| description | Calving plays a key role in the recent rapid retreat of glaciers around the world. However, many processes related to calving are poorly understood since direct observations are scarce and challenging to obtain. When calving occurs at a glacier front, surface-water waves arise over the ocean or a lake in front of glaciers. To study calving processes from these surface waves, we performed field observations at Glaciar Perito Moreno, Patagonia. We synchronized time-lapse photography and surface waves record to confirm that glacier calving produces distinct waves compared with local noise. A total of 1074 calving events were observed over the course of 39 d. During austral summer, calving occurred twice more frequently than in spring. The cumulative distribution of calving-interevent time interval followed exponential model, implying random occurrence of events in time. We further investigated wave properties and found that source-to-sensor distance can be estimated from wave dispersion within ~20% error. We also found that waves produced by different calving types showed similar spectra in the same frequency range between 0.05–0.2 Hz, and that the amplitude of surface waves increased with the size of calving. This study demonstrates the potential of surface-wave monitoring for understanding calving processes. |
| first_indexed | 2024-04-10T04:41:17Z |
| format | Article |
| id | doaj.art-e70b8efac3af485c9021dc933ab1cc32 |
| institution | Directory Open Access Journal |
| issn | 0022-1430 1727-5652 |
| language | English |
| last_indexed | 2024-04-10T04:41:17Z |
| publishDate | 2018-06-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Glaciology |
| spelling | doaj.art-e70b8efac3af485c9021dc933ab1cc322023-03-09T12:40:37ZengCambridge University PressJournal of Glaciology0022-14301727-56522018-06-016436237610.1017/jog.2018.28Glacier calving observed with time-lapse imagery and tsunami waves at Glaciar Perito Moreno, PatagoniaMASAHIRO MINOWA0EVGENY A. PODOLSKIY1SHIN SUGIYAMA2DAIKI SAKAKIBARA3PEDRO SKVARCA4Institute of Low Temperature Science, Hokkaido University, Nishi8, Kita19, Sapporo 060-0819, JapanArctic Research Center, Hokkaido University, Nishi11, Kita21, Sapporo 001-0021, Japan Global Station for Arctic Research, Global Institution for Collaborative Research and Education, Hokkaido University, Nishi11, Kita21, Sapporo 001-0021, JapanInstitute of Low Temperature Science, Hokkaido University, Nishi8, Kita19, Sapporo 060-0819, JapanArctic Research Center, Hokkaido University, Nishi11, Kita21, Sapporo 001-0021, JapanGlaciarium – Glacier Interpretive Center, 9405 El Calafate, Santa Cruz, ArgentinaCalving plays a key role in the recent rapid retreat of glaciers around the world. However, many processes related to calving are poorly understood since direct observations are scarce and challenging to obtain. When calving occurs at a glacier front, surface-water waves arise over the ocean or a lake in front of glaciers. To study calving processes from these surface waves, we performed field observations at Glaciar Perito Moreno, Patagonia. We synchronized time-lapse photography and surface waves record to confirm that glacier calving produces distinct waves compared with local noise. A total of 1074 calving events were observed over the course of 39 d. During austral summer, calving occurred twice more frequently than in spring. The cumulative distribution of calving-interevent time interval followed exponential model, implying random occurrence of events in time. We further investigated wave properties and found that source-to-sensor distance can be estimated from wave dispersion within ~20% error. We also found that waves produced by different calving types showed similar spectra in the same frequency range between 0.05–0.2 Hz, and that the amplitude of surface waves increased with the size of calving. This study demonstrates the potential of surface-wave monitoring for understanding calving processes.https://www.cambridge.org/core/product/identifier/S002214301800028X/type/journal_articlecalvingglacier monitoringglaciological instruments and methods |
| spellingShingle | MASAHIRO MINOWA EVGENY A. PODOLSKIY SHIN SUGIYAMA DAIKI SAKAKIBARA PEDRO SKVARCA Glacier calving observed with time-lapse imagery and tsunami waves at Glaciar Perito Moreno, Patagonia Journal of Glaciology calving glacier monitoring glaciological instruments and methods |
| title | Glacier calving observed with time-lapse imagery and tsunami waves at Glaciar Perito Moreno, Patagonia |
| title_full | Glacier calving observed with time-lapse imagery and tsunami waves at Glaciar Perito Moreno, Patagonia |
| title_fullStr | Glacier calving observed with time-lapse imagery and tsunami waves at Glaciar Perito Moreno, Patagonia |
| title_full_unstemmed | Glacier calving observed with time-lapse imagery and tsunami waves at Glaciar Perito Moreno, Patagonia |
| title_short | Glacier calving observed with time-lapse imagery and tsunami waves at Glaciar Perito Moreno, Patagonia |
| title_sort | glacier calving observed with time lapse imagery and tsunami waves at glaciar perito moreno patagonia |
| topic | calving glacier monitoring glaciological instruments and methods |
| url | https://www.cambridge.org/core/product/identifier/S002214301800028X/type/journal_article |
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