noaa-lake-13666
Lake Bourget, France 11,000 Year Terrigenous Input Data
Arnaud, F.; Révillon, S.; Debret, M.; Revel, M.; Chapron, E.; Jacob, J.; Giguet-Covex, C.; Poulenard, J.; Magny, M.
Lake Bourget, France 11,000 Year Terrigenous Input Data
2012-12-20
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13666
Investigator
F.
Arnaud
Investigator
S.
Révillon
Investigator
M.
Debret
Investigator
M.
Revel
Investigator
E.
Chapron
Investigator
J.
Jacob
Investigator
C.
Giguet-Covex
Investigator
J.
Poulenard
Investigator
M.
Magny
earth science
paleoclimate
paleolimnology
titanium dioxide,sediment,null,percent,null,paleolimnology,null,null,N,terrigenous input calculated as TiO2/0.5x100
earth science
paleoclimate
paleolimnology
potassium/titanium,sediment,null,dimensionless,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null
earth science
paleoclimate
paleolimnology
age,null,null,calendar year before present,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
mineralogy
geoscientificInformation
hydrology
11104 cal yr BP
-47 cal yr BP
Complete
45.7475
45.7833
5.8333
5.8482
231
231
Continent
Europe
Western Europe
France
Lake Bourget LDB04-I>LATITUDE 45.7833>LONGITUDE 5.8333
Continent
Europe
Western Europe
France
Lake Bourget LDB01-I>LATITUDE 45.7475>LONGITUDE 5.8482
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
Fabien Arnaud, Sidonie Révillon, Maxime Debret, Marie Revel, Emmanuel Chapron, Jérémy Jacob, Charline Giguet-Covex, Jérôme Poulenard, Michel Magny. 2012.
Lake Bourget regional erosion patterns reconstruction reveals Holocene NW European Alps soil evolution and paleohydrology.
Quaternary Science Reviews, Vol. 51, pp. 81-92, 19 September 2012.
DOI: 10.1016/j.quascirev.2012.07.025
Two well-dated ca Holocene-long sedimentary sequences from deepest parts of Lake Bourget provide new insights onto the evolution of erosion patterns at a regional scale in NW European Alps. The combination of high resolution geochemistry - XRF core scanning, calibrated by 150 punctual measurements - and isotope geochemistry (ENd) of the terrigenous fraction permitted the reconstruction not only of the intensity, but also the type (physical erosion vs. chemical weathering) and the location (Prealpine massifs vs. High Crystalline massifs) of dominant erosion processes. Those data point the persistency of weak erosion fluxes from 9600 to 5500 cal. BP due both to a dry climate and the growing sheltering effect of soils that rapidly progressed between 9600 and 8000 cal. BP. Soils then reached a steady state before being destabilised around 4400 cal. BP, probably in response to human impact. The human impact then reached a sufficient intensity to change erosion patterns at a regional scale, but did not result in a significant increase of the regional terrigenous flux. The following enhancement of erosion processes occurred around 2700 cal. BP. It was first paced by changing climatic conditions, but probably reinforced by human impact during Late Iron Age - Antiquity period. Over the long-term trend, the Lake Bourget record pinpoints an evolution of paleohydrological conditions in the Alps dominated by dry conditions from 9500 to 4400 cal. BP and a subsequent drift toward wetter conditions that culminated during the so-called Little Ice Age (ca 1350-1900 AD). In such a context the current dry conditions in European Alps appear out-of-trend. At high resolution, 17 periods of enhanced hydrological activity highlight the rapid climatic changes that are typical of the Holocene.
STUDY NOTES: This dataset presents the total terrigneous input in cores LDB01-I and LBD04-I taken in Lake Bourget.
It mirrors the paleohydrologic evolution of River Rhone over a ca. 4000 km2 watershed.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/france/bourget2012ldb04.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/france/bourget2012ldb01.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11