Seiches and the slide/seiche dynamics; subcritical and supercritical subaquous mass flows and their deposits. Examples from Swiss Lakes
Abstract Four historically documented large and potentially dangerous lacustrine waves in Swiss lakes show that these waves have been seiches (standing waves) triggered by sublacustrine slides; a statement which is in accordance with the experience of seismologists who see earthquakes triggering sei...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-10-01
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| Series: | Swiss Journal of Geosciences |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s00015-021-00394-6 |
| _version_ | 1818986129793220608 |
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| author | Christoph Siegenthaler |
| author_facet | Christoph Siegenthaler |
| author_sort | Christoph Siegenthaler |
| collection | DOAJ |
| description | Abstract Four historically documented large and potentially dangerous lacustrine waves in Swiss lakes show that these waves have been seiches (standing waves) triggered by sublacustrine slides; a statement which is in accordance with the experience of seismologists who see earthquakes triggering seiches in lakes. Nevertheless, large historical waves in Switzerland have recently been modeled as progressive shallow water waves (tsunamis), probably because the slide/seiche dynamics are not known, and experiments with subaquatic slides fail to generate seiches in test–flumes. It appears that these tests exhibit a small shear–energy/slide–energy ratio ε, if compared with the situation in lakes. These facts incite a shear–stress lemma that states that ε is the constituent factor for the slide/seiche coupling. The structure of the subaqueous mass flow deposit (MFD) in lakes Lucerne and Geneva suggests the occurrence of subcritical and of supercritical slide flows. The former would generate a contortite, a MFD with contorted bedding, the latter a debrite (mudclast conglomerate). Potential slide energy considerations are used for an estimation of the amplitudes of large seiches produced by subaquatic slides, a proceeding that yields partly similar and partly very different results, as compared with numerical tsunami simulations. |
| first_indexed | 2024-12-20T18:45:53Z |
| format | Article |
| id | doaj.art-497ee0ad9ae7453fb6a9b528d1b7215d |
| institution | Directory Open Access Journal |
| issn | 1661-8726 1661-8734 |
| language | English |
| last_indexed | 2024-12-20T18:45:53Z |
| publishDate | 2021-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Swiss Journal of Geosciences |
| spelling | doaj.art-497ee0ad9ae7453fb6a9b528d1b7215d2022-12-21T19:29:43ZengSpringerOpenSwiss Journal of Geosciences1661-87261661-87342021-10-0111411810.1186/s00015-021-00394-6Seiches and the slide/seiche dynamics; subcritical and supercritical subaquous mass flows and their deposits. Examples from Swiss LakesChristoph SiegenthalerAbstract Four historically documented large and potentially dangerous lacustrine waves in Swiss lakes show that these waves have been seiches (standing waves) triggered by sublacustrine slides; a statement which is in accordance with the experience of seismologists who see earthquakes triggering seiches in lakes. Nevertheless, large historical waves in Switzerland have recently been modeled as progressive shallow water waves (tsunamis), probably because the slide/seiche dynamics are not known, and experiments with subaquatic slides fail to generate seiches in test–flumes. It appears that these tests exhibit a small shear–energy/slide–energy ratio ε, if compared with the situation in lakes. These facts incite a shear–stress lemma that states that ε is the constituent factor for the slide/seiche coupling. The structure of the subaqueous mass flow deposit (MFD) in lakes Lucerne and Geneva suggests the occurrence of subcritical and of supercritical slide flows. The former would generate a contortite, a MFD with contorted bedding, the latter a debrite (mudclast conglomerate). Potential slide energy considerations are used for an estimation of the amplitudes of large seiches produced by subaquatic slides, a proceeding that yields partly similar and partly very different results, as compared with numerical tsunami simulations.https://doi.org/10.1186/s00015-021-00394-6Historical reportsHomogeniteContortiteDebriteInternal hydraulic jumpShear energy |
| spellingShingle | Christoph Siegenthaler Seiches and the slide/seiche dynamics; subcritical and supercritical subaquous mass flows and their deposits. Examples from Swiss Lakes Swiss Journal of Geosciences Historical reports Homogenite Contortite Debrite Internal hydraulic jump Shear energy |
| title | Seiches and the slide/seiche dynamics; subcritical and supercritical subaquous mass flows and their deposits. Examples from Swiss Lakes |
| title_full | Seiches and the slide/seiche dynamics; subcritical and supercritical subaquous mass flows and their deposits. Examples from Swiss Lakes |
| title_fullStr | Seiches and the slide/seiche dynamics; subcritical and supercritical subaquous mass flows and their deposits. Examples from Swiss Lakes |
| title_full_unstemmed | Seiches and the slide/seiche dynamics; subcritical and supercritical subaquous mass flows and their deposits. Examples from Swiss Lakes |
| title_short | Seiches and the slide/seiche dynamics; subcritical and supercritical subaquous mass flows and their deposits. Examples from Swiss Lakes |
| title_sort | seiches and the slide seiche dynamics subcritical and supercritical subaquous mass flows and their deposits examples from swiss lakes |
| topic | Historical reports Homogenite Contortite Debrite Internal hydraulic jump Shear energy |
| url | https://doi.org/10.1186/s00015-021-00394-6 |
| work_keys_str_mv | AT christophsiegenthaler seichesandtheslideseichedynamicssubcriticalandsupercriticalsubaquousmassflowsandtheirdepositsexamplesfromswisslakes |