6N (2024-2025): Lake basin seismic response measurements for Lake Skilak, Alaska
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FDSN Network Information
| FDSN code | 6N (2024-2025) | Network name | Lake basin seismic response measurements for Lake Skilak, Alaska (SkilakLake) |
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| Start year | 2024 | Operated by |
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| End year | 2025 | Deployment region | - |
| Description |
The goal of this experiment is to measure ground motion amplification and tuning of earthquake arrivals using ocean bottom seismographs (OBS) and onshore seismographs deployed in and around Skilak Lake, which is on the Kenai Peninsula, Alaska. Shaking by earthquakes can trigger turbidite flows in lakes, which provide a detailed paleoseismic record of past earthquakes. Earthquake-triggered lacustrine turbidite flows have been observed directly with turbidity sensors during recent earthquakes and as turbidite deposits in sediment cores. The core records often contain annual and semi-annual variations (e.g., varves) that can be used to determine precise dates for the past events. Translating detailed lacustrine turbidite records into earthquake recurrence histories requires knowing how susceptible lake-bottom sediments are to shaking during earthquakes and tuning and amplification effects of the lake basin itself. Since lake-basin shape, |
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