noaa-lake-5455
Lake Victoria 1,000 Year Diatom-Based Conductivity Reconstruction
Stager, J.C.; Ryves, D.B.; Cumming, B.F.; Meeker, L.D.; Beer, J.
Lake Victoria 1,000 Year Diatom-Based Conductivity Reconstruction
2005-05-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/5455
Investigator
J.C.
Stager
Investigator
D.B.
Ryves
Investigator
B.F.
Cumming
Investigator
L.D.
Meeker
Investigator
J.
Beer
earth science
paleoclimate
paleolimnology
total shallow water diatoms,null,null,percent,null,paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
age,null,null,calendar year before present,null,climate reconstructions|paleolimnology,null,null,N,before 2000 CE
earth science
paleoclimate
climate reconstructions|paleolimnology
electrical conductivity,diatom assemblage|lake water,null,microsiemens per centimeter,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleolimnology
depth,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
population abundance
geoscientificInformation
967 cal yr BP
29 cal yr BP
Complete
.3
.3
33.3333
33.3333
1135
1135
Continent
Africa
Eastern Africa
Uganda
Lake Victoria, Pilkington Bay core 64-2>LATITUDE .3>LONGITUDE 33.3333
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
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
Stager, J.C., D. Ryves, B.F. Cumming, L.D. Meeker, J. Beer. 2005. Solar variability and the levels of Lake Victoria, East Africa, during the last millenium. Journal of Paleolimnology Vol. 33, Issue 2, Feb. 2005, pp. 243-251
A new diatom series with 1-6 year resolution from Lake Victoria, East Africa, shows that lake level minima occurred ca. 820-760, 680-660, 640-620, 370-340, and 220-150 calendar years BP. Inferred lake levels were exceptionally high during most of the Little Ice Age (ca. 600-200 calendar years BP). Synchrony between East African high lake levels and prolonged sunspot minima during much of the last millenium may reflect solar variability's effects on tropical rainfall, but those relationships reversed sign ca. 200 years ago. Historical records also show that Victoria lake levels rose during every peak of the ca. 11-year sunspot cycle since the late 19th century. These findings suggest that, if these apparent tropical sun-climate associations during the last millenium were real, then they were subject to abrupt sign reversals.
STUDY NOTES: Lake Victoria High-Resolution Diatom-Based Conductivity Reconstruction. Shallow water diatom percentage and inferred conductivity, interpreted as a proxy for lake level over the last millennia.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/victoria2005.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/victoria2005.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11