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@ARTICLE{Ohlendorf:171929,
      author       = {Ohlendorf, Christian and Fey, Michael and Massaferro,
                      Juileta and Haberzettl, Thorsten and Laprida, C. and Lücke,
                      Andreas and Maidana, Nora and Mayr, Christoph and Oehlerich,
                      Markus and Mercau, J. R. and Wille, Michael and Corbella,
                      Hugo and St-Onge, Guillaume and Schäbitz, Frank and
                      Zolitschka, Bernd},
      title        = {{L}ate {H}olocene hydrology inferred from lacustrine
                      sediments of {L}aguna {C}háltel (southern {A}rgentina)},
      journal      = {Palaeogeography, palaeoclimatology, palaeoecology},
      volume       = {411},
      issn         = {0031-0182},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2014-05483},
      pages        = {229-248},
      year         = {2014},
      abstract     = {Hydrological changes that occurred during the last 4700
                      years have been reconstructed using multi-proxy analyses of
                      sediment cores from the volcanic crater lake of Laguna
                      Cháltel (50°S, 71°W). The chronology is based on AMS 14C
                      age modeling constrained by paleomagnetic secular
                      variations. Chemical and physical properties of the lake
                      water together with results of lake-water
                      surface-temperature monitoring, as well as sediment
                      characteristics reveal conspicuous features archived as
                      different sedimentary carbonate phases and morphologies
                      which are attributed to lake-level changes.Sedimentological,
                      geochemical and biological proxies together suggest the
                      development from an initial playa lake-phase towards a
                      system with progressively rising lake level. In detail,
                      proxies indicate the existence of an ephemeral lake since
                      4700 cal BP until a glauberite-bearing carbonate crust
                      formed around 4040 cal BP which probably is associated to
                      the globally recognized 4.2 ka event. This crust is
                      interpreted as a desiccation event terminating the ephemeral
                      lake phase. Following this desiccation a shift towards
                      conditions with a positive hydrological balance of Laguna
                      Cháltel occurs, which leads to the development of a saline
                      lake with ooid formation between 4040 and 3200 cal BP.
                      Further lake-level increase with initially high minerogenic
                      input until 2700 cal BP resulted in a lake freshening which
                      allowed the preservation of diatoms. Sigmoidal and star
                      shaped carbonate crystals occurred until 1720 cal BP
                      indicating a syn- or post-depositional formation of ikaite.
                      Anoxic conditions and increased deposition of clay and sand
                      through fluvial and eolian input are interpreted as a
                      further lake-level rise and/or a prolonged winter ice cover
                      culminating during the Little Ice Age. The highest lake
                      level was probably reached at that time and since then
                      dropped to its present day height.Previous studies have
                      shown that the southern hemisphere westerly winds (SWW)
                      exert an oppositional control on hydrological regimes at the
                      eastern and the western sides of the Patagonian Andes. At
                      Laguna Cháltel SWW forcing is changing evaporation rates by
                      varying wind intensities, air temperatures and lake ice
                      coverages as well as by precipitation rates (easterly vs.
                      westerly sources of moisture). Our data suggests that the
                      lake-level history of Laguna Cháltel reflects changes in
                      the SWW during the last 4.7 ka on the eastern side of the
                      Andes. However, the elevated location of Laguna Cháltel on
                      an 800 m high plateau at the leeward side of the Andes
                      potentially leads to a local overprint of the SWW influence
                      on the hydrological balance.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {246 - Modelling and Monitoring Terrestrial Systems: Methods
                      and Technologies (POF2-246) / 255 - Terrestrial Systems:
                      From Observation to Prediction (POF3-255)},
      pid          = {G:(DE-HGF)POF2-246 / G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000342269200020},
      doi          = {10.1016/j.palaeo.2014.06.030},
      url          = {https://juser.fz-juelich.de/record/171929},
}