noaa-lake-11936
East Lake, Melville Island, Canada 4200 Year Varve Thickness Data
Cuven, S.; Francus, P.; Lamoureux, S.F.
East Lake, Melville Island, Canada 4200 Year Varve Thickness Data
2011-09-15
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/11936
Investigator
S.
Cuven
Investigator
P.
Francus
Investigator
S.F.
Lamoureux
earth science
paleoclimate
paleolimnology
notes,null,null,count,null,paleolimnology,null,null,N,varve number
earth science
paleoclimate
paleolimnology
depth at sample start,null,null,centimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
varve thickness,null,null,millimeter,null,paleolimnology,smoothed,null,N,25-yr Gaussian weighted moving average
earth science
paleoclimate
paleolimnology
age,null,null,year Common Era,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
varve thickness,null,null,millimeter,null,paleolimnology,null,image analysis,N,null
earth science
paleoclimate
paleolimnology
varve thickness,null,null,millimeter,null,paleolimnology,smoothed,null,N,5-yr Gaussian weighted moving average
earth science
paleoclimate
paleolimnology
physical properties
geoscientificInformation
hydrology
-2192 AD
2005 AD
4142 cal yr BP
-55 cal yr BP
Complete
74.8833
74.8833
-109.5333
-109.5333
5
5
Continent
North America
Canada
Nunavut
East Lake NU>LATITUDE 74.8833>LONGITUDE -109.5333
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
Cuven, S., P. Francus, and S. Lamoureux. 2011.
Mid to Late Holocene hydroclimatic and geochemical records from
the varved sediments of East Lake, Cape Bounty, Canadian High Arctic.
Quaternary Science Reviews, Vol. 30, Issues 19-20, September 2011,
pp. 2651-2665.
doi:10.1016/j.quascirev.2011.05.019
A long sedimentary sequence from East Lake, Cape Bounty, Melville
Island (74°55'N, 109°32'W) contains a 4200 year-long clastic
varved record of paleohydrologic variations at high resolution.
Sedimentary elemental geochemistry from micro X-ray fluorescence
(m-XRF) and sediment fabric variability reflect changes in sediment
sources and lacustrine conditions through time. The sedimentary
environment progressed from marine in the mid-Holocene, to estuarian
from 2195 BC to 243 AD, to fully lacustrine source after 244 AD.
Correlation with local meteorological data indicates that varve
thickness (VT) is positively correlated with snow depth on May 1st
and negatively correlated with mean Sept-May temperatures.
Our paleoclimatic reconstruction from VT series revealed high snow
accumulation and warm Sept-May months before 1350 BC, and a period
of low snow accumulation and cold Sept-May between 1600-1900 AD
that may correspond to the Little Ice Age. The general trends
of VT series from Cape Bounty are in phase with the d18O series
in Agassiz Ice Cap, and in anti-phase with the VT series from
Lower Murray Lake in the northeastern of Queen's Elizabeth Islands
(QEI). Low mean Arctic temperatures coincide with clusters of high
sediment yield events at East, Nicolay and South Sawtooth Lakes,
especially during 1600-1750 AD and 1810-1910 AD. The East Lake
record also exhibits the signature of the Atlantic Multidecadal
Oscillation (AMO) for periods: 600-850 AD, 1400-1550 AD
and 1750-1850 AD.
STUDY NOTES: Varve thickness (VT) was measured for the period 2005-1999 AD
on a short gravity core (CB06EG1) taken in 2006. Varve thickness
was measured for the period 1998 AD-2192 BC on a long gravity
core (CB06EV1) taken in 2006. An erosive turbidite eroded
sediments from 1972 to 1966 AD. Correlation with instrumental
data were made on the 1973 - 2005 AD only. Data are presented
along an AD/BC time scale and a Varve Years time scale.
Caution must be used when interpreting the section from 2192 BC
to 243 AD because it was attributed to an estuarine environment
that may have affected the varve formation. Chronology was
supported by 137-Cs. The counting error sum for two varve counts
(#1 and #2) of the same analyst was estimated as mean square
error (Lotter and Lemcke, 1999) and it is equal to 4027 +/- 232
years (Table 1 of the paper). Count #2 was selected.
East Lake, Cape Bounty, Melville Island, Canada:
74°53'N, 109°32'W, 32m depth, 5m asl.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/nu/east2011varve.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/nu/east2011varve.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11