Publication Date:
2024-01-27
Description:
The volcanogenic lake Laguna Potrok Aike, Santa Cruz, Argentina, reveals an unprecedented continuous high resolution climatic record for the steppe regions of southern Patagonia. With the applied multi-proxy approach rapid climatic changes before the turn of the first millennium were detected followed by medieval droughts which are intersected by moist and/or cold periods of varying durations and intensities. The 'total inorganic carbon' content was identified as a sensitive lake level indicator. This proxy suggests that during the late Middle Ages (ca. AD 1230-1410) the lake level was rather low representing a signal of the 'Medieval Climate Anomaly' in southeastern Patagonia. At the beginning of the 'Little Ice Age' the lake level rose considerably staying on a high level during the whole period. Subsequently, the lake level lowered again in the course of the 20th century.
Keywords:
Age; Age, 14C AMS; Age, 14C calibrated, CALIB 4.4 (Stuiver et al., 2003); Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, dated material; Age, dated standard deviation; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; GC; Gravity corer; Laguna Potrok Aike, Patagonia; PTA02-04; Sample code/label; Sample comment
Type:
Dataset
Format:
text/tab-separated-values, 112 data points
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