9 1996 Kluwer Academic Publishers. Printed in Belgium. The climatic signal in varved sediments from Lake C2, northern Ellesmere Island, Canada *
Annually-laminated clastic sediments preserve a high resolution proxy record of paleoclimate, provided that allochthonous sedimentation represents a response to meteorological forcing of watershed sediment transfer. Here, we demonstrate this linkage, and illustrate a calibration process using the mo...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1995
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.211.2262 http://www.geo.umass.edu/climate/doug/pubs/hardy_etal_jopl16_1996.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.211.2262 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.211.2262 2023-05-15T16:05:57+02:00 9 1996 Kluwer Academic Publishers. Printed in Belgium. The climatic signal in varved sediments from Lake C2, northern Ellesmere Island, Canada * Douglas R. Hardy L Raymond S. Bradley Bernd Zolitschka The Pennsylvania State University CiteSeerX Archives 1995 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.211.2262 http://www.geo.umass.edu/climate/doug/pubs/hardy_etal_jopl16_1996.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.211.2262 http://www.geo.umass.edu/climate/doug/pubs/hardy_etal_jopl16_1996.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.geo.umass.edu/climate/doug/pubs/hardy_etal_jopl16_1996.pdf text 1995 ftciteseerx 2016-01-07T17:51:55Z Annually-laminated clastic sediments preserve a high resolution proxy record of paleoclimate, provided that allochthonous sedimentation represents a response to meteorological forcing of watershed sediment transfer. Here, we demonstrate this linkage, and illustrate a calibration process using the most recent 40 years of a varve record from Lake C2 (82 ~ t N; 78000 ' W), three years of field measurements, and meteorological data for 1951-92 from nearby AES weather station Alert. Field measurements were used to correlate proxies of the energy available for snowmelt (e.g. air temperature) and daily suspended sediment discharge (SSQ). Our calibration was extended through use of weather data from Alert. Both mean daily air temperature at Echo, and daily SSQ, were well correlated with air temperature at 600 m above Alert, as obtained from the 1200 Z (0800 LST) rawinsonde sounding. Accordingly, we used pooled 1990 and 1992 Alert 600 m data to predict the lagged daily sediment discharge into Lake C2 (adj. r 2 = 0.43). Daily values were summed each year in order to produce an annual series of predicted sediment transfer to the lake. The original varve chronology was based on eight sediment cores recovered from the deep basin of the lake (>80 m). Although low-frequency fluctuations of the varve and predicted SSQ series agree, slight tuning of the varve record optimizes the correlation between them. Adjustments were based on examination of weather data for specific years, reexamination of sediment core thin sections, and by aligning fluctuations in the two series Text Ellesmere Island Unknown Canada Ellesmere Island |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Annually-laminated clastic sediments preserve a high resolution proxy record of paleoclimate, provided that allochthonous sedimentation represents a response to meteorological forcing of watershed sediment transfer. Here, we demonstrate this linkage, and illustrate a calibration process using the most recent 40 years of a varve record from Lake C2 (82 ~ t N; 78000 ' W), three years of field measurements, and meteorological data for 1951-92 from nearby AES weather station Alert. Field measurements were used to correlate proxies of the energy available for snowmelt (e.g. air temperature) and daily suspended sediment discharge (SSQ). Our calibration was extended through use of weather data from Alert. Both mean daily air temperature at Echo, and daily SSQ, were well correlated with air temperature at 600 m above Alert, as obtained from the 1200 Z (0800 LST) rawinsonde sounding. Accordingly, we used pooled 1990 and 1992 Alert 600 m data to predict the lagged daily sediment discharge into Lake C2 (adj. r 2 = 0.43). Daily values were summed each year in order to produce an annual series of predicted sediment transfer to the lake. The original varve chronology was based on eight sediment cores recovered from the deep basin of the lake (>80 m). Although low-frequency fluctuations of the varve and predicted SSQ series agree, slight tuning of the varve record optimizes the correlation between them. Adjustments were based on examination of weather data for specific years, reexamination of sediment core thin sections, and by aligning fluctuations in the two series |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Douglas R. Hardy L Raymond S. Bradley Bernd Zolitschka |
spellingShingle |
Douglas R. Hardy L Raymond S. Bradley Bernd Zolitschka 9 1996 Kluwer Academic Publishers. Printed in Belgium. The climatic signal in varved sediments from Lake C2, northern Ellesmere Island, Canada * |
author_facet |
Douglas R. Hardy L Raymond S. Bradley Bernd Zolitschka |
author_sort |
Douglas R. Hardy L |
title |
9 1996 Kluwer Academic Publishers. Printed in Belgium. The climatic signal in varved sediments from Lake C2, northern Ellesmere Island, Canada * |
title_short |
9 1996 Kluwer Academic Publishers. Printed in Belgium. The climatic signal in varved sediments from Lake C2, northern Ellesmere Island, Canada * |
title_full |
9 1996 Kluwer Academic Publishers. Printed in Belgium. The climatic signal in varved sediments from Lake C2, northern Ellesmere Island, Canada * |
title_fullStr |
9 1996 Kluwer Academic Publishers. Printed in Belgium. The climatic signal in varved sediments from Lake C2, northern Ellesmere Island, Canada * |
title_full_unstemmed |
9 1996 Kluwer Academic Publishers. Printed in Belgium. The climatic signal in varved sediments from Lake C2, northern Ellesmere Island, Canada * |
title_sort |
9 1996 kluwer academic publishers. printed in belgium. the climatic signal in varved sediments from lake c2, northern ellesmere island, canada * |
publishDate |
1995 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.211.2262 http://www.geo.umass.edu/climate/doug/pubs/hardy_etal_jopl16_1996.pdf |
geographic |
Canada Ellesmere Island |
geographic_facet |
Canada Ellesmere Island |
genre |
Ellesmere Island |
genre_facet |
Ellesmere Island |
op_source |
http://www.geo.umass.edu/climate/doug/pubs/hardy_etal_jopl16_1996.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.211.2262 http://www.geo.umass.edu/climate/doug/pubs/hardy_etal_jopl16_1996.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766401866332110848 |