noaa-lake-5456
Lake Malawi 25,000 Year Biogenic Silica and Mass Accumulation Rate Data
Johnson, T.C.; Brown, E.T.; McManus, J.F.; Barry, S.L.; Barker, P.
Lake Malawi 25,000 Year Biogenic Silica and Mass Accumulation Rate Data
2003-02-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/5456
Investigator
T.C.
Johnson
Investigator
E.T.
Brown
Investigator
J.F.
McManus
Investigator
S.L.
Barry
Investigator
P.
Barker
earth science
paleoclimate
paleolimnology
notes,null,null,null,null,paleolimnology,null,null,C,sediment texture
earth science
paleoclimate
paleolimnology
depth,null,null,centimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
porosity,sediment,null,percent,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
accumulation rate,sediment,null,gram per square centimeter per year,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
biogenic silica,sediment,null,percent,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
sedimentation rate,sediment,null,centimeter per year,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
biogenic silica,sediment,null,milligram per square centimeter per year,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
physical properties
earth science
paleoclimate
paleolimnology
mineralogy
geoscientificInformation
24308 cal yr BP
155 cal yr BP
Complete
-10.265
-9.97667
34.23
34.3183
Continent
Africa
Eastern Africa
Malawi
Lake Malawi, core M98-1P>LATITUDE -10.265>LONGITUDE 34.3183
Continent
Africa
Eastern Africa
Malawi
Lake Malawi, core M98-2P>LATITUDE -9.97667>LONGITUDE 34.23
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
Johnson, T.C., E.T. Brown, J.F. McManus, S.L. Barry, P. Barker. 2002. A high resolution paleoclimate record spanning the past 25,000 years in southern East Africa. Science Vol. 296, pp. 113-114
High-resolution profiles of the mass accumulation rate of biogenic silica and other geochemical proxies in two piston cores from northern Lake Malawi provide a climate signal for this part of tropical Africa spanning the past 25,000 years. The biogenic silica mass accumulation rate was low during the relatively dry late Pleistocene, when the river flux of silica to the lake was suppressed. Millennial-scale fluctuations, due to upwelling intensity, in the late Pleistocene climate of the Lake Malawi basin appear to have been closely linked to the Northern Hemisphere climate until 11 thousand years ago. Relatively cold conditions in the Northern Hemisphere coincided with more frequent north winds over the Malawi basin, perhaps resulting from a more southward migration of the Intertropical Convergence Zone.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/malawi_2002.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/malawi_2002.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11