noaa-lake-12503
Nerfloen Norway 7800 Year Lake Sediment Data
Vasskog, K.; Paasche, O.; Nesje, A.; Boyle, J.; Birks, H.J.B.
Nerfloen Norway 7800 Year Lake Sediment Data
2012-02-13
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/12503
Investigator
K.
Vasskog
Investigator
O.
Paasche
Investigator
A.
Nesje
Investigator
J.
Boyle
Investigator
H.J.B.
Birks
earth science
paleoclimate
paleolimnology
manganese,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleolimnology
grain size class,sediment,null,percent,null,paleolimnology,null,null,N,very coarse silt
earth science
paleoclimate
paleolimnology
magnetic susceptibility,sediment,null,dimensionless,null,paleolimnology,normalized,null,N,null
earth science
paleoclimate
paleolimnology
iron,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleolimnology
mass magnetic susceptibility,sediment,null,cubic meter per kilogram,null,paleolimnology,null,null,N,x10-7 units
earth science
paleoclimate
paleolimnology
zirconium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleolimnology
grain size class,sediment,null,percent,null,paleolimnology,null,null,N,medium silt
earth science
paleoclimate
paleolimnology
clay,sediment,null,percent,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
principal component,null,null,dimensionless,null,paleolimnology,null,null,N,axis 1
earth science
paleoclimate
paleolimnology
potassium/titanium,sediment,null,dimensionless,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleolimnology
grain size class,sediment,null,percent,null,paleolimnology,null,null,N,fine silt
earth science
paleoclimate
paleolimnology
grain size class,sediment,null,percent,null,paleolimnology,null,null,N,very fine silt
earth science
paleoclimate
paleolimnology
grain size class,sediment,null,percent,null,paleolimnology,null,null,N,coarse silt
earth science
paleoclimate
paleolimnology
rubidium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleolimnology
strontium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleolimnology
density,dry sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
age,null,null,calendar year before present,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
organic matter,sediment,null,percent,null,paleolimnology,null,loss on ignition,N,null
earth science
paleoclimate
paleolimnology
physical properties
earth science
paleoclimate
paleolimnology
geochemistry
geoscientificInformation
7775 cal yr BP
-20 cal yr BP
Complete
61.9333
61.9333
6.8667
6.8667
29
29
Continent
Europe
Northern Europe
Scandanavia
Norway
Nerfloen>LATITUDE 61.9333>LONGITUDE 6.8667
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
Vasskog, K., Ø. Paasche, A. Nesje, J.F. Boyle, and H.J.B. Birks. 2012.
A new approach for reconstructing glacier variability based on
lake sediments recording input from more than one glacier.
Quaternary Research, Vol. 77, Issue 1, January 2012, pp 192-204.
doi:10.1016/j.yqres.2011.10.001
We explore the possibility of building a continuous glacier
reconstruction by analyzing the integrated sedimentary response
of a large (440 km2) glacierized catchment in western Norway,
as recorded in the downstream lake Nerfloen (N61°56', E6°52').
A multi-proxy numerical analysis demonstrates that it is possible
to distinguish a glacier component in the ~8000-yr-long record,
based on distinct changes in grain size, geochemistry, and magnetic
composition. Principal Component Analysis (PCA) reveals a strong
common signal in the 15 investigated sedimentary parameters,
with the first principal component explaining 77% of the
total variability. This signal is interpreted to reflect glacier
activity in the upstream catchment, an interpretation that is
independently tested through a mineral magnetic provenance analysis
of catchment samples. Minimum glacier input is indicated between
6700-5700 cal yr BP, probably reflecting a situation when most
glaciers in the catchment had melted away, whereas the highest
glacier activity is observed around 600 and 200 cal yr BP.
During the local Neoglacial interval (~4200 cal yr BP until present),
five individual periods of significantly reduced glacier extent
are identified at ~3400, 3000-2700, 2100-2000, 1700-1500,
and ~900 cal yr BP.
STUDY NOTES: This file contains the data plotted in figure 8 in Vasskog et al. 2012.
This includes the first principal component (1st PC) of 15 lake sediment
parameters, and the ratio between bulk magnetic susceptibility measured
at 77K and 293K, plotted against a 4th degree polynomial age-depth model.
Principal Component Analysis (PCA) is employed to detect patterns
of variability that are shared between the investigated lake sediment
variables. The PCA includes primary count rates of Fe, Rb, Mn, Sr, Zr,
and the K/Ti ratio, six grain-size classes as compositional percentages,
and physical sediment variables LOI, DBD, and XBulk, resulting in a
final data set containing 15 different variables, with a stratigraphical
resolution of one centimeter. The first PCA explains 77% of the total
variability of the data set.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/norway/nerfloen2012.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/norway/nerfloen2012.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11