دورية أكاديمية
The Last Glacial Maximum in the central North Island, New Zealand: palaeoclimate inferences from glacier modelling
| العنوان: | The Last Glacial Maximum in the central North Island, New Zealand: palaeoclimate inferences from glacier modelling |
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| المؤلفون: | S. R. Eaves, A. N. Mackintosh, B. M. Anderson, A. M. Doughty, D. B. Townsend, C. E. Conway, G. Winckler, J. M. Schaefer, G. S. Leonard, A. T. Calvert |
| المصدر: | Climate of the Past, Vol 12, Iss 4, Pp 943-960 (2016) |
| بيانات النشر: | Copernicus Publications, 2016. |
| سنة النشر: | 2016 |
| المجموعة: | LCC:Environmental pollution LCC:Environmental protection LCC:Environmental sciences |
| مصطلحات موضوعية: | Environmental pollution, TD172-193.5, Environmental protection, TD169-171.8, Environmental sciences, GE1-350 |
| الوصف: | Quantitative palaeoclimate reconstructions provide data for evaluating the mechanisms of past, natural climate variability. Geometries of former mountain glaciers, constrained by moraine mapping, afford the opportunity to reconstruct palaeoclimate, due to the close relationship between ice extent and local climate. In this study, we present results from a series of experiments using a 2-D coupled energy balance–ice flow model that investigate the palaeoclimate significance of Last Glacial Maximum moraines within nine catchments in the central North Island, New Zealand. We find that the former ice limits can be simulated when present-day temperatures are reduced by between 4 and 7 °C, if precipitation remains unchanged from present. The spread in the results between the nine catchments is likely to represent the combination of chronological and model uncertainties. The majority of catchments targeted require temperature decreases of 5.1 to 6.3 °C to simulate the former glaciers, which represents our best estimate of the temperature anomaly in the central North Island, New Zealand, during the Last Glacial Maximum. A decrease in precipitation of up to 25 % from present, as suggested by proxy evidence and climate models, increases the magnitude of the required temperature changes by up to 0.8 °C. Glacier model experiments using reconstructed topographies that exclude the volume of post-glacial ( |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1814-9324 1814-9332 |
| Relation: | http://www.clim-past.net/12/943/2016/cp-12-943-2016.pdf; https://doaj.org/toc/1814-9324; https://doaj.org/toc/1814-9332 |
| DOI: | 10.5194/cp-12-943-2016 |
| URL الوصول: | https://doaj.org/article/d822283e9f11458196f6d02824b09969 |
| رقم الأكسشن: | edsdoj.822283e9f11458196f6d02824b09969 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 18149324 18149332 |
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| DOI: | 10.5194/cp-12-943-2016 |