noaa-lake-13096
Cape Bounty East Lake, Melville Island, Canada 2840 Year Grain Size Data
Lapointe, F.; Francus, P.; Lamoureux, S.F.; Saïd, M.; Cuven, S.
Cape Bounty East Lake, Melville Island, Canada 2840 Year Grain Size Data
2012-06-30
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13096
Investigator
F.
Lapointe
Investigator
P.
Francus
Investigator
S.F.
Lamoureux
Investigator
M.
Saïd
Investigator
S.
Cuven
earth science
paleoclimate
paleolimnology
grain size class,sediment,null,micrometer,null,paleolimnology,null,null,N,Maximum disk apparent diameter
earth science
paleoclimate
climate reconstructions|paleolimnology
age,null,null,year Common Era,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
grain size class,sediment,null,micrometer,null,paleolimnology,null,null,N,98th percentile of disk apparent diameter
earth science
paleoclimate
climate reconstructions|paleolimnology
precipitation,null,null,millimeter,null,climate reconstructions|paleolimnology,smoothed,null,N,precipitation of largest event per year; 15-year running median; based on sediment grain size
earth science
paleoclimate
climate reconstructions|paleolimnology
precipitation,null,null,millimeter,null,climate reconstructions|paleolimnology,null,null,N,precipitation of largest event per year based on sediment grain size
earth science
paleoclimate
climate reconstructions|paleolimnology
depth,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
grain size class,sediment,null,micrometer,null,paleolimnology,null,null,N,Median disk apparent diameter
earth science
paleoclimate
paleolimnology
grain size class,sediment,null,micrometer,null,paleolimnology,null,null,N,Standard deviation of the median disk apparent diameter
earth science
paleoclimate
paleolimnology
reconstruction
earth science
paleoclimate
paleolimnology
physical properties
geoscientificInformation
PAGES 2k Network
PAGES Arctic 2k
2840 cal yr BP
0 cal yr BP
Complete
74.92
74.92
-109.55
-109.55
5
5
Continent
North America
Canada
Nunavut
East Lake Cape Bounty>LATITUDE 74.92>LONGITUDE -109.55
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Lapointe, F., P. Francus, S.F. Lamoureux, M. Saïd, and S. Cuven. 2012.
1750 years of large rainfall events inferred from particle size
at East Lake, Cape Bounty, Melville Island, Canada.
Journal of Paleolimnology, Vol. 48, No. 1, June 2012, pp. 159-173.
DOI: 10.1007/s10933-012-9611-8
Annual grain-size variation was measured on the varved (annually
laminated) lacustrine sediment from Cape Bounty East Lake using
an innovative image analysis system. About 7100 images were acquired
using a scanning electron microscope and processed to obtain
measurement of particles from 2845 varves. Several particle-size
distributions indices were calculated and can be linked to high-energy
sedimentary facies. Moreover, the coarse grain size (98th percentile)
of these high-energy facies is strongly correlated with summer rainfall
(and also summer temperature) of instrumental data from nearby stations.
Particle-size distributions show a similar trend through time,
especially for the standard deviation and the 98th percentile.
Climatic reconstruction suggests that Cape Bounty recently experienced
an unprecedented increase of rainfall events since ~AD 1920. On the
other hand, changes in varve thickness are weakly correlated with the
particle-size distribution. Altogether, these results highlight the need
to obtain annual grain-size data to identify a meteorological signal.
STUDY NOTES: Annual grain size data from sediment retrieved from East Lake,
Cape Bounty, Melville Island, Canada for the past 2840 years.
East Lake, Cape Bounty, Melville Island, Canada:
74.92°N, 109.55°W, 30m depth, 5m asl.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/nu/east2012.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/nu/east2012.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11