- Title Information
- Title
- Calibration and application of lipid H isotopic ratios for Quantitative Reconstruction of New England Climate Variability over the past 15 kyr
- Name:
Personal
- Name Part
- Hou, Juzhi
- Role
- Role Term:
Text
- creator
- Origin Information
- Copyright Date
(keyDate="yes", encoding="w3cdtf")
- 2008
- Physical Description
- Extent
- xxx, 240 p.
- digitalOrigin
- born digital
- Note
- Thesis (Ph.D.) -- Brown University (2009)
- Name:
Personal
- Name Part
- Huang, Yongsong
- Role
- Role Term:
Text
- director
- Name:
Personal
- Name Part
- Herbert, Timothy
- Role
- Role Term:
Text
- reader
- Name:
Personal
- Name Part
- Russell, James
- Role
- Role Term:
Text
- reader
- Name:
Personal
- Name Part
- Saal, Alberto
- Role
- Role Term:
Text
- reader
- Name:
Personal
- Name Part
- Brigham-Grette, Julie
- Role
- Role Term:
Text
- reader
- Name:
Corporate
- Name Part
- Brown University. Geological Sciences
- Role
- Role Term:
Text
- sponsor
- Genre (aat)
- theses
- Abstract
- Continental climate experiences significant changes and severely affects human's life. Quantitative reconstruction of past continental climate changes is extremely important for
understanding their mechanisms in order to predict future climate changes. In this thesis, I have developed new proxies for continental precipitation isotopic ratios, which is one of the most
quantitative and effective proxies for continental climate changes, and proxies for mean annual surface air temperature from lake sediments. Calibration using transects of 33 modern lake surface
sediments in the southwest United States demonstrated that hydrogen isotopic ratios (D/H) of leaf waxes produced by terrestrial plants and preserved in lake sediment are a reliable proxy for
continental precipitation isotopic ratios. The effect of relative humidity is countered by the opposing effect of vegetation changes. D/H ratios of C22 n-alkanoic acid and sediment bound C16
n-alkanoic acid capture past temperature changes based on transects of modern lake sediments in eastern North America. I have reconstructed temperature variability during the late Pleistocene to
the early Holocene in northeastern North America (New England). The records from Blood Pond and Rocky Pond, Massachusetts revealed well-known climate shifts during the late Pleistocene, similar
to the Greenland ice core records. The centennial-scale temperature variability was most likely related to solar activity based on the spectral analysis. The records during the early Holocene
revealed a prominent and abrupt climate reversal (~3 degree cooler than the millennial-scale background) between 9.3 and 9.1 kyr BP, stronger than the climate reversal at 8.4 kyr BP (associated
with the Greenland 8.2 ka event). The stronger climate response at the 9.2 ka event than 8.4 ka event could be attributed to the geographic distribution of Laurentide Ice Sheet and associated
atmospheric circulation during the early Holocene.
- Subject (Local)
- Topic
- Late Pleistocene-Early Holocene
- Subject (Local)
- Topic
- Compound Specific Isotope Analysis
- Subject (Local)
- Topic
- Hydrogen Isotope
- Subject (FAST)
(authorityURI="http://id.worldcat.org/fast", valueURI="http://id.worldcat.org/fast/964997")
- Topic
- Hydrogen--Isotopes
- Subject (FAST)
(authorityURI="http://id.worldcat.org/fast", valueURI="http://id.worldcat.org/fast/1241913")
- Geographic
- New England
- Record Information
- Record Content Source (marcorg)
- RPB
- Record Creation Date
(encoding="iso8601")
- 20091218
- Language
- Language Term:
Code (ISO639-2B)
- eng
- Language Term:
Text
- English
- Identifier:
DOI
- 10.7301/Z037770Z
- Access Condition:
rights statement
(href="http://rightsstatements.org/vocab/InC/1.0/")
- In Copyright
- Access Condition:
restriction on access
- Collection is open for research.
- Type of Resource (primo)
- dissertations