DecTephra: A new database of Deception Island's tephra record (Antarctica)
vEGU21: Gather Online | 19–30 April 2021 Deception Island is the most active volcano in the South Shetland Islands (Antarctica) with more than 20 eruptions in the in the last two centuries, including the 1967, 1969 and 1970 most recent eruptive events, and three episodes of volcanic unrest since 199...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Conference Object |
| Language: | unknown |
| Published: |
2021
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| Online Access: | http://hdl.handle.net/10261/241322 https://doi.org/10.5194/egusphere-egu21-2075 https://doi.org/10.13039/501100003329 |
| Summary: | vEGU21: Gather Online | 19–30 April 2021 Deception Island is the most active volcano in the South Shetland Islands (Antarctica) with more than 20 eruptions in the in the last two centuries, including the 1967, 1969 and 1970 most recent eruptive events, and three episodes of volcanic unrest since 1990 (1992, 1999 and 2014-2015). Since the discovery of Deception island in 1820, the number of scientific bases, touristic activities, and air and vessel traffic in the region, have considerably increased. Only the Antarctic Peninsula region, together with the South Shetland Islands, hosts 25 research stations and 3 summer field camps, which are located inside or within a 150 km radius distance from this active volcano. Nearby, the Palmer Archipelago and the north-western coast of the Antarctic Peninsula are both important tourist destinations exceeding 30,000 visitors per year with a significant increase in vessel traffic during the tourist season. This escalation in the amount of exposed infrastructure and population to a future eruption of Deception Island clearly urges the need to advancing our knowledge of the island¿s volcanic and magmatic history and developing improved vulnerability analyses and long-term volcanic hazard assessments. However, past attempts to construct a volcanic hazard map of Deception have always been limited by the lack of a complete eruption record. In this sense, volcanic ash layers found in marine and lacustrine sediment cores, and glaciers outside Deception Island can provide valuable information to: (i) determine the size and explosiveness of past eruptive events; (ii) assess the extent of their related hazards (e.g. ash fall out); (iii) complete the eruption record of the island; and (iv) estimate the island¿s eruption recurrence over time. In this work, we provide a detailed, and up-to-date, revision of the current knowledge on Deception Island¿s tephra record. For this, we have compiled the DecTephra (Deception Island Tephra Record) database, which seeks recording the most relevant ... |
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