Browsing by Author "Hellstrom, John C."
Now showing items 1-4 of 4
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Abrupt millennial-scale changes in intensity of Southern Hemisphere westerly winds during marine isotope stages 2–4
(Geological Society of America, 2011)The strength of mid-southern latitude westerly atmospheric circulation plays an important role in global climate. Due to a lack of long, continuous, high-resolution paleoclimate archives from mid-southern latitudes, it ... -
Lignin oxidation products in soil, dripwater and speleothems from four different sites in New Zealand
(Copernicus GmbH, 2021)Lignin oxidation products (LOPs) are widely used as vegetation proxies in climate archives, such as sediment and peat cores. The total LOP concentration, Σ8, provides information on the abundance of vegetation, while the ... -
Pacific climate reflected in Waipuna Cave drip water hydrochemistry
(Copernicus GmbH, 2020)Cave microclimate and geochemical monitoring is vitally important for correct interpretations of proxy time series from speleothems with regard to past climatic and environmental dynamics. We present results of a comprehensive ... -
Speleothem growth intervals reflect New Zealand montane vegetation response to temperature change over the last glacial cycle
(Springer Science and Business Media LLC, 2020)Flowstone speleothem growth beneath Mount Arthur, New Zealand shows a clear relationship to vegetation density and soil development on the surface above. Flowstone does not currently form beneath sub-alpine Nothofagus ...
