Late Holocene climate and glacier fluctuations in the Cambria Icefield area, British Columbia Coast Mountains.
In the British Columbia Coast Mountains most dendroclimatological and dendroglaciological studies have focused on developing insights from tree‐ring sites located in the southern and central regions. By contrast relatively few studies have been conducted in the northwestern Coast Mountains, where ex...
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ftuvicpubl:oai:dspace.library.uvic.ca:1828/3345 2023-05-15T16:20:42+02:00 Late Holocene climate and glacier fluctuations in the Cambria Icefield area, British Columbia Coast Mountains. Johnson, Kate Smith, Daniel J. 2010 application/pdf http://hdl.handle.net/1828/3345 English en eng http://hdl.handle.net/1828/3345 Available to the World Wide Web Coast Mountains (B.C. and Alaska) glaciers Thesis 2010 ftuvicpubl 2022-05-19T06:12:11Z In the British Columbia Coast Mountains most dendroclimatological and dendroglaciological studies have focused on developing insights from tree‐ring sites located in the southern and central regions. By contrast relatively few studies have been conducted in the northwestern Coast Mountains, where exploratory studies reveal that significant climate‐radial growth relationships exist. The purpose of this study was to develop a proxy record of climate change from tree rings and to reconstruct the late Holocene glacial history of two outlet glaciers spilling eastward from th e Cambria Icefield. Dendroclimate investigations were conducted using mountain hemlock (Tsuga mertensiana) trees growing on three high‐elevation montane slopes. The three stands located along a 35 km transect cross date to form a master chronology for the region spanning 409 years (1596 to 2007 A.D.). Correlation analyses show that the radial growth of the regional tree‐ring chronology corresponds to variations in the mean June‐July‐August (JJA) air temperature. The relationship between the two variables was used to reconstruct mean JJA air temperature from 1680 to 2007 A.D.). The reconstruction illustrates warm and cool intervals that are synchronous ito those derived from other paleoenvironmental research in this region. The proxy record also highlights annual to inter‐decadal climate variability likely resulting from atmospheric‐ocean circulation patterns described by the El Niño‐Southern Oscillat ion and the Pacific Decadal Oscillation. The late Holocene behaviour of White and South Flat glaciers was investigated using radiocarbon dating techniques, dendrochronological cross‐dating techniques and geomorphological analysis of sedimentary units within the White and South Flat glacier forefields. Evidence for a First Millennial Advance (FMA) cumulating around 650 A.D. and early Little Ice Age (LIA) advances at 1200 and 1400 A.D. were documented. These advances are contemporaneous with the late Holocene activity of glaciers throughout the region, ... Thesis glacier glaciers Alaska University of Victoria (Canada): UVicDSpace Cambria Icefield ENVELOPE(-129.671,-129.671,55.800,55.800) Pacific |
institution |
Open Polar |
collection |
University of Victoria (Canada): UVicDSpace |
op_collection_id |
ftuvicpubl |
language |
English |
topic |
Coast Mountains (B.C. and Alaska) glaciers |
spellingShingle |
Coast Mountains (B.C. and Alaska) glaciers Johnson, Kate Late Holocene climate and glacier fluctuations in the Cambria Icefield area, British Columbia Coast Mountains. |
topic_facet |
Coast Mountains (B.C. and Alaska) glaciers |
description |
In the British Columbia Coast Mountains most dendroclimatological and dendroglaciological studies have focused on developing insights from tree‐ring sites located in the southern and central regions. By contrast relatively few studies have been conducted in the northwestern Coast Mountains, where exploratory studies reveal that significant climate‐radial growth relationships exist. The purpose of this study was to develop a proxy record of climate change from tree rings and to reconstruct the late Holocene glacial history of two outlet glaciers spilling eastward from th e Cambria Icefield. Dendroclimate investigations were conducted using mountain hemlock (Tsuga mertensiana) trees growing on three high‐elevation montane slopes. The three stands located along a 35 km transect cross date to form a master chronology for the region spanning 409 years (1596 to 2007 A.D.). Correlation analyses show that the radial growth of the regional tree‐ring chronology corresponds to variations in the mean June‐July‐August (JJA) air temperature. The relationship between the two variables was used to reconstruct mean JJA air temperature from 1680 to 2007 A.D.). The reconstruction illustrates warm and cool intervals that are synchronous ito those derived from other paleoenvironmental research in this region. The proxy record also highlights annual to inter‐decadal climate variability likely resulting from atmospheric‐ocean circulation patterns described by the El Niño‐Southern Oscillat ion and the Pacific Decadal Oscillation. The late Holocene behaviour of White and South Flat glaciers was investigated using radiocarbon dating techniques, dendrochronological cross‐dating techniques and geomorphological analysis of sedimentary units within the White and South Flat glacier forefields. Evidence for a First Millennial Advance (FMA) cumulating around 650 A.D. and early Little Ice Age (LIA) advances at 1200 and 1400 A.D. were documented. These advances are contemporaneous with the late Holocene activity of glaciers throughout the region, ... |
author2 |
Smith, Daniel J. |
format |
Thesis |
author |
Johnson, Kate |
author_facet |
Johnson, Kate |
author_sort |
Johnson, Kate |
title |
Late Holocene climate and glacier fluctuations in the Cambria Icefield area, British Columbia Coast Mountains. |
title_short |
Late Holocene climate and glacier fluctuations in the Cambria Icefield area, British Columbia Coast Mountains. |
title_full |
Late Holocene climate and glacier fluctuations in the Cambria Icefield area, British Columbia Coast Mountains. |
title_fullStr |
Late Holocene climate and glacier fluctuations in the Cambria Icefield area, British Columbia Coast Mountains. |
title_full_unstemmed |
Late Holocene climate and glacier fluctuations in the Cambria Icefield area, British Columbia Coast Mountains. |
title_sort |
late holocene climate and glacier fluctuations in the cambria icefield area, british columbia coast mountains. |
publishDate |
2010 |
url |
http://hdl.handle.net/1828/3345 |
long_lat |
ENVELOPE(-129.671,-129.671,55.800,55.800) |
geographic |
Cambria Icefield Pacific |
geographic_facet |
Cambria Icefield Pacific |
genre |
glacier glaciers Alaska |
genre_facet |
glacier glaciers Alaska |
op_relation |
http://hdl.handle.net/1828/3345 |
op_rights |
Available to the World Wide Web |
_version_ |
1766008676222500864 |