noaa-recon-12823
Sugan Lake, NW China 1000 Year Chironomid Salinity Reconstruction
Chen, J.-H.; Chen, F.-H.; Zhang, E.L.; Brooks, S.J.; Zhou, A.F.; Zhang, J.-W.
Sugan Lake, NW China 1000 Year Chironomid Salinity Reconstruction
2012-03-09
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/12823
Investigator
J.-H.
Chen
Investigator
F.-H.
Chen
Investigator
E.L.
Zhang
Investigator
S.J.
Brooks
Investigator
A.F.
Zhou
Investigator
J.-W.
Zhang
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
depth,null,null,centimeter,null,climate reconstructions|insect|paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
salinity,lake water|midge assemblage,null,standard deviation unit,null,climate reconstructions|insect|paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|insect|paleolimnology
age,null,null,year Common Era,null,climate reconstructions|insect|paleolimnology,null,null,N,varve year
earth science
paleoclimate
reconstructions
lake salinity
geoscientificInformation
Other Hydroclimate Reconstruction
hydrology
990 AD
2002 AD
960 cal yr BP
-52 cal yr BP
Complete
38.8667
38.8667
93.8833
93.8833
2793
2793
Continent
Asia
Eastern Asia
China
Sugan Lake>LATITUDE 38.8667>LONGITUDE 93.8833
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
Chen, J.H., F.H. Chen, E.L. Zhang, S.J. Brooks, A.F. Zhou,
and J.W. Zhang. 2009.
A 1000-year chironomid-based salinity reconstruction from varved
sediments of Sugan Lake, Qaidam Basin, arid Northwest China,
and its palaeoclimatic significance.
Chinese Science Bulletin, Vol.54, No. 20, pp. 3749-3759.
doi: 10.1007/s11434-009-0201-8
A 1000-year high-resolution (~10 years) chironomid record from varved
sediments of Sugan Lake, Qaidam Basin on the northern Tibetan Plateau,
is presented. The chironomid assemblages are mainly composed of the
relatively high-saline-water taxa Psectrocladius barbimanus-type
and Orthocladius/ Cricotopus, and the relatively low-saline-water
taxa Procladius and Psectrocladius sordidellus-type. Variations in
the chironomid fauna and inferred salinities suggest that over the
last millennium, the Sugan Lake catchment has alternated between
contrasting climatic conditions, having a dry climate during the
period 990-1550 AD, a relatively humid climate during the Little Ice
Age (LIA) (1550-1840 AD), and a dry climate again from 1840 AD onwards.
At the decadal to centennial scale, a wet event around 1200-1230 AD,
interrupting the generally arid period (990-1550 AD), and a dry event
around 1590-1700 AD, punctuating the generally humid period
(1550-1840 AD), are clearly documented. Trends in the chironomid-based
salinity time series indicate a highly unstable climate during the LIA
when salinity fluctuations were of greater magnitude and higher
frequency. The effective moisture evolution in the Sugan Lake catchment
during the last millennium reconstructed by chironomid analysis is in
broad agreement with previous palaeo-moisture data derived from other
sites in arid Northwest China (ANC). The LIA, characterized by
generally humid conditions over the westerly-dominated ANC was
distinctly different from that in monsoonal China, implying an
"out-of-phase" relationship between moisture evolution in these
two regions during the past 1000 years.
STUDY NOTES: Chironomid-inferred water salinity data from Sugan Lake, Qaidam Basin,
NW China, for the last millennium. Salinity was estimated using
a chironomid-salinity transfer function for Tibetan Plateau lakes
developed by Zhang et al (2007). The salinity record was standardized
to have a zero mean and unit standard deviation. Chronology was
established by varve counting (Zhou et al., 2007, 2009).
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chen2009/chen2009.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/chen2009/chen2009.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11