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Limnogeology of Lake Lucerne

Limnogeology of Lake Lucerne. Amon Kimeli , Genyffer Troina , Nadine Newmark , Yen Dinh. Overview of discussion. Origin/Background of the lake i.e. glacial refering to the Moraine Ridge Mass Movements within the lake refering to the Vitznau Basin

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Limnogeology of Lake Lucerne

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  1. Limnogeology of Lake Lucerne AmonKimeli, GenyfferTroina, Nadine Newmark, Yen Dinh

  2. Overview of discussion • Origin/Background of the lake i.e. glacial refering to the Moraine Ridge • Mass Movements within the lake refering to the Vitznau Basin • Subaqeuos slides/Mass flow (1601 earthquake) • Rockfalls/Rockslides (1964, 2007 Obermatt) • Anthropogenic influences i.e. eutrophication • Climate indicators i.e. flooding, LIA

  3. Hilbe, 2011; Schnellmann, 2001

  4. Study Area: Transects

  5. Remarks on Analysis of the Cores: • Cutting from upper to lower part • Cover the cut core immediately • Analysis should be done immediately to minimize the influence of the air on the sediment • After splitting the cores were photographed (Tip: remove the glad wrap to prevent glare) and described macroscopically

  6. Origin/Background Maximum glaciation ca. 22,000 yr ago Background sedimentation EVIDENCE: Moraine glacial deposition

  7. 2 mm 500 um 125 um

  8. Mass Movement 1601 Earthquake Subaqueous slides or mass flows due to earthquake disruption

  9. 2 mm 500 um 125 um

  10. During and post earthquake 1 3 2

  11. Anthropogenic influences 1950’s until 1990’s EUTROPHICATION Zolitschka, 2007

  12. Mass Movement 1964 & 2007 Obermatt Rockslides Rockfalls/rockslides from steep rock faces above lakeshore • Rockfall from quarry impacts on the lake sediments  underwater landslide. • Varve sedimentation resumes as per usuall afterwards Schnellmann, 2007

  13. Climate Indicators 1601 until present Continuous signatures of flooding etc seen throughout the cores A B A • Background sedimentation continues B • During periods of high precipitation floods brings the terrigenous material to the basin floor as sandy deposits Schnellmann, 2007

  14. Conclusion The ideal core if all the processes were superimposed on one another

  15. Thank you! Images complimentary and assistance from Prof Batist, Phillip & Flavio

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