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Evaluating the impact trigger hypothesis for the onset of the Paleocene-Eocene thermal maximum

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TitleInfo
Title
Evaluating the impact trigger hypothesis for the onset of the Paleocene-Eocene thermal maximum
Name (type = personal)
NamePart (type = family)
Galinkin
NamePart (type = given)
Ryan Alexander
NamePart (type = date)
1993-
DisplayForm
Ryan Alexander Galinkin
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Tikoo-Schantz
NamePart (type = given)
Sonia
DisplayForm
Sonia Tikoo-Schantz
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
chair
Name (type = personal)
NamePart (type = family)
Gilman
NamePart (type = given)
Ronald
DisplayForm
Ronald Gilman
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Keeton
NamePart (type = given)
Charles
DisplayForm
Charles Keeton
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Aubry
NamePart (type = given)
Marie-Pierre
DisplayForm
Marie-Pierre Aubry
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
outside member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (type = corporate)
NamePart
School of Graduate Studies
Role
RoleTerm (authority = RULIB)
school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (encoding = w3cdtf); (keyDate = yes); (qualifier = exact)
2019
DateOther (qualifier = exact); (type = degree)
2019-05
CopyrightDate (encoding = w3cdtf); (qualifier = exact)
2019
Language
LanguageTerm (authority = ISO 639-3:2007); (type = text)
English
Abstract (type = abstract)
We investigate whether an extraterrestrial impact could produce changes in atmospheric chemistry sufficient to produce the 5°C global temperature rise observed at the onset of the Paleocene-Eocene Thermal Maximum (PETM), a major global warming event in Earth history that occurred approximately 55.8 million years ago (Ma) [Charles et al., 2014]. We calculated greenhouse gas production stemming from both asteroidal and cometary impacts for impactors with radii of 2.5 km or 5 km, and impact angles perpendicular to the surface. We examined a range of processes such as fireball-induced combustion and associated release of biogenic carbon, the deposition of carbon and water directly from the impactor, the massive vaporization of water due to a deep oceanic impact, and the production of NO via a hypervelocity impactor's path through the atmosphere and subsequent O_3 production. We then convert the global warming potential (GWP) of the greenhouse gases produced in our calculations into GWP equivalent of CO_2 and use the resulting values to compute the estimated global increase in temperature for each hypothetical impact. Our most powerful impacts could potentially increase the global temperature by up to 4.69°C. This amount of warming is very close to what is inferred from paleoclimate records. We suggest that a purely perpendicular impact in our modeled size range is unlikely, yet plausible, to produce the required GWP equivalent of CO_2 to result in a 5°C rise in global temperatures. However, future work may be conducted to study whether changes in impact angle may produce higher amounts of greenhouse gases and potentially be responsible for the abrupt warming experienced at the PETM boundary.
Subject (authority = local)
Topic
Paleocene-Eocene thermal maximum
Subject (authority = RUETD)
Topic
Physics and Astronomy
Subject (authority = LCSH)
Topic
Collisions (Astrophysics)
Subject (authority = LCSH)
Topic
Greenhouse effect, Atmospheric
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_9628
PhysicalDescription
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application/pdf
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text/xml
Extent
1 online resource (ix, 47 pages) : illustrations
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/t3-5pmq-0966
Genre (authority = ExL-Esploro)
ETD graduate
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Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Galinkin
GivenName
Ryan
MiddleName
Alexander
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2019-03-29 14:42:24
AssociatedEntity
Name
Ryan Galinkin
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical

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