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词条 Dawn Sumner
释义

  1. Early life and education

  2. Career

  3. Awards and honors

  4. Gender equity and sexual harassment in science

  5. Selected publications

  6. Outreach

  7. See also

  8. References

  9. External links

{{Infobox scientist
| name = Dawn Y. Sumner
| image = Dawn Y Sumner in Pearse Valley, Antarctica.jpg
| caption = Dawn Sumner in Pearse Valley, Dry Valleys, Antarctica
| birth_place = Seattle, Washington (state), USA
| workplaces = University of California, Davis
| alma_mater = Caltech; MIT
| known_for = microbial life in extreme environments
ancient microbial life
| awards = Fellow of the Geological Society of America
Career Award for Outstanding Contributions in Geosciences, Geobiology and Microbiology from the Geological Society of America
| website = https://dysumner.faculty.ucdavis.edu/
}}Dawn Yvonne Sumner is an American geologist, planetary scientist, and astrobiologist. She is a professor at the University of California, Davis. Sumner's research includes evaluating microbial communities in Antarctic lakes, exploration of Mars via the Curiosity rover, and characterization of microbial communities in the lab and from ancient geologic samples. She is an investigator on the NASA Mars Science Laboratory (MSL) and was Chair of the UC Davis Department of Earth & Planetary Sciences[1] from 2014-2016.[2] She is Fellow of the Geological Society of America.[3]

Early life and education

Sumner was born near Seattle, Washington, and spent part of her childhood on the Yakama Indian Reservation in the Pacific Northwest.[4] From there, she earned a B.S. with Honors in geology from the California Institute of Technology (Caltech), then attended the Massachusetts Institute of Technology for her Ph.D. which she completed in 1995. Sumner then returned Caltech for postdoctoral research, supported by an O.K. Earl Postdoctoral Fellowship.[5]

Career

  • Ancient Microbial Communities - Sumner's research includes understanding microbial evolution and ecology, and Earth history,  through understanding microbial signatures in the rock record. Her publications feature new developments in how to interpret ancient biological responses to environmental factors, tracing oxygenation[6] and the impact on carbonate microbial biological signatures.[7]
  • Antarctic Lakes Sumner's research utilizes Antarctic lakes as a model system for understanding microbial processes, early oxygenic photosynthesis, and life on other planets. This work includes the discovery of pinnacles of microbial growth under ice-covered lakes[8] and describes multiple microbial communities involved in the development of these features.  Similar features in another Antarctic lake appear to record changes in the lake environment, including sea level, through time.[9]
  • Exploration of Mars and its Environments Professor Sumner's research with the Mars Science Laboratory has generated over three dozen collaborative publications. Sumner's research has established that parts of ancient Mars could have hosted life as we know it on Earth,[10] and contributed to the discovery of organic molecules on Mars.[11] Sumner is a MSL “long term planner”,[12] one of several lead geoscientists amongst more than five hundred scientists not directly employed by NASA on this project. She is also involved in future planning for additional Mars exploration, including a mission in 2020.[13]

Awards and honors

Sumner was elected a Fellow of the Geological Society of America in 2014.[14] Also in 2014, she was selected to deliver the honorary Carl Sagan Lecture at the American Geophysical Union.[15] In 2016, Sumner was awarded the Career Award for Outstanding Contributions in Geosciences, Geobiology and Microbiology from the Geological Society of America.[16]

Gender equity and sexual harassment in science

Sumner is the author of a widely used anti-harassment statement that she made public so that other universities and institutes could use it as a model.[17] A leader in helping institutions develop anti-harassment plans, Sumner presented to a workshop at the 2016 American Geophysical Union on “Addressing harassment and improving workplace climate.”[18] She was also an invited presenter for Association of Polar Early Career Scientists webinar on sexual harassment during fieldwork.[19]

Selected publications

  • Were kinetics of Archean calcium carbonate precipitation related to oxygen concentration? Geology, v. 24, p. 119-122. DOI: [https://pubs.geoscienceworld.org/gsa/geology/article-abstract/24/2/119/206445/were-kinetics-of-archean-calcium-carbonate?redirectedFrom=fulltext 10.1130/0091-7613] Sumner, Dawn Y. and John P. Grotzinger, 1996.
  • Late Archean calcite-microbe interactions: Two morphologically distinct microbial communities that affected calcite nucleation differently. Palaios, v. 12, p. 300-316. DOI: [https://pubs.geoscienceworld.org/sepm/palaios/article-abstract/12/4/302/99654/late-archean-calcite-microbe-interactions-two?redirectedFrom=fulltext 10.2307/3515333], Sumner, Dawn Y., 1997.
  • [https://pubs.geoscienceworld.org/books/book/1880/chapter/11530605/late-archean-aragonite-precipitationpetrography Late Archean aragonite precipitation: Petrography, facies associations, and environmental significance], in Carbonate Sedimentation and Diagenesis in the Evolving Precambrian World, J. Grotzinger and N. James, editors, S.E.P.M. Special Publication #67, p. 123-144. Sumner, Dawn Y. and John P. Grotzinger, 2000.
  • Renalcids as fossilized biofilm clusters. Palaios, v. 17, p. 225-236. DOI:[https://pubs.geoscienceworld.org/sepm/palaios/article-abstract/17/3/225/99840/renalcids-as-fossilized-biofilm-clusters?redirectedFrom=fulltext 10.1669/0883-1351(2002)017<0225:RAFBC>2.0.CO;2], Stephens, Nat P. and Sumner, Dawn Y., 2002.
  • Poor preservational potential of organics in Meridiani Planum hematite-bearing sedimentary rocks, Journal of Geophysical Research, Planets, v. 109, E12007. DOI:[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2004JE002321 10.1029/2004JE002321]. Sumner, Dawn Y., 2004.
  • Cracks and fins in sulfate sand: Evidence for recent mineral-atmospheric water cycling in Meridiani Planum outcrops? Geology, v. 34, p. 229-232. DOI: [https://pubs.geoscienceworld.org/gsa/geology/article-abstract/34/4/229/129491/cracks-and-fins-in-sulfate-sand-evidence-for?redirectedFrom=fulltext 10.1130/G22101.1]. Chavdarian, Gregory V., and Sumner, Dawn Y. 2006.
  • Isotopic fingerprints of microbial respiration in aragonite from Bahamian stromatolites. Geology, v. 34, p. 973-976. DOI [https://www.researchgate.net/publication/249521319_Isotopic_fingerprints_of_microbial_respiration_in_aragonite_from_Bahamian_stromatolites 10.1130/G22859A.1]. Andres., Dawn Y. Sumner, et al. 2006.
  • Undirected motility of filamentous cyanobacteria produces reticulate mats. Geobiology, v. 8, p. 179-190. DOI: [https://www.ncbi.nlm.nih.gov/pubmed/20345889 10.1111/j.1472-4669.2010.00235.x] Shepard, Rebekah N., and Sumner, Dawn Y., 2010.
  • Discovery of large conical stromatolites in Lake Untersee, Antarctica. Geobiology, v.9. 280–293. DOI: [https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1472-4669.2011.00279.x 10.1111/j.1472-4669.2011.00279.x.] Andersen, Dale T., Sumner, Dawn Y., et al., 2011.
  • Origins of Microbial Microstructures In the Neoproterozoic Beck Spring Dolomite: Variations In Microbial Community and Timing of Lithification. Journal of Sedimentary Research, v. 82, p. 709-722, DOI: [https://pubs.geoscienceworld.org/sepm/jsedres/article-abstract/82/9/709/258312/origins-of-microbial-microstructures-in-the 10.2110/jsr.2012.65]. Harwood, Cara L., and Sumner, Dawn Y., 2012.
  • Antarctic microbial mats: A modern analog for Archean lacustrine oxygen oases. Geology, v. 43, p. 887-890. DOI: [https://pubs.geoscienceworld.org/gsa/geology/article-abstract/43/10/887/131714/antarctic-microbial-mats-a-modern-analog-for?redirectedFrom=fulltext 10.1130/G36966.1]. Sumner, Dawn Y., Hawes, Ian, et al., 2015.
  • Growth of elaborate microbial pinnacles in Lake Vanda, Antarctica. Geobiology, v. 14, p. 556-574. DOI: [https://onlinelibrary.wiley.com/doi/full/10.1111/gbi.12188 10.1111/gbi.12188]. Sumner, Dawn Y., Anne D. Jungblut, et al., 2016.
  • A habitable fluvio-lacustrine environment at Yellowknife Bay, Gale Crater, Mars. Science, v. 343, 1242777. DOI: 10.1126/science.1242777, Grotzinger, J.P., D.Y. Sumner, et al., 2014 (online 2013).

Outreach

Sumner has presented lectures to public and school groups, and she has participated in videos and films on exploring Mars.  These have included presentations at Sierra College,[20] a Northern California Rotary Club,[21] and Sacramento State University's Science in the River City.[22] She appeared in several videos on Mars exploration, including ones hosted by UC Davis[23] and in the Finnish documentary film “The Other Side of Mars”.[24]

Dawn Sumner's research has been covered in local and national media outlets, including Popular Science,[25] Wired Magazine,[26] KPCC public radio,[27] the television series Take Part,[28] and the BBC.[29]

See also

  • Extremophiles
  • Astrobiology
  • Paleobiology
  • Jet Propulsion Laboratory
  • John Grotzinger
  • Lake Untersee
  • Lake Vanda
  • Gale Crater

References

1. ^{{Cite web|url=http://geology.ucdavis.edu/|title=Department of Geology, UC Davis|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
2. ^{{Cite web|url=https://geology.ucdavis.edu/sites/g/files/dgvnsk2851/files/inline-files/F15news_online.pdf|title=UC Davis Earth and Planetary Science department; Chair's letter by Dawn Sumner|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
3. ^{{Cite web|url=http://www.geosociety.org/GSA/About/awards/GSA_Fellows/GSA/Awards/Fellowship.aspx|title=GSA Fellow|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
4. ^{{Cite web|url=https://www.newsreview.com/sacramento/mars-needs-this-woman/content?oid=17298240|title=Mars needs this woman|last=Leibrock|first=Rachel|date=6 April 2015|website=newsreview.com|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
5. ^{{Cite news|url=http://gradfund.rutgers.edu/blog/awards/6216/|title=California Institute of Technology: The O.K. Earl Postdoctoral Fellowship and the Texaco Postdoctoral Fellowship - GradFund|work=GradFund|access-date=2018-10-03|language=en-US}}
6. ^{{Cite journal|last=Sumner|first=Dawn Y.|last2=Grotzinger|first2=John P.|date=1996|title=Were kinetics of Archean calcium carbonate precipitation related to oxygen concentration?|journal=Geology|language=en|volume=24|issue=2|pages=119–22|doi=10.1130/0091-7613(1996)024<0119:WKOACC>2.3.CO;2|pmid=11539494|issn=0091-7613}}
7. ^{{Cite journal|last=Sumner|first=Dawn Y.|date=1997-05-01|title=Carbonate precipitation and oxygen stratification in late Archean seawater as deduced from facies and stratigraphy of the Gamohaan and Frisco formations, Transvaal Supergroup, South Africa|journal=American Journal of Science|language=en|volume=297|issue=5|pages=455–487|doi=10.2475/ajs.297.5.455|issn=0002-9599}}
8. ^{{Cite journal|last=Sumner|first=D. Y.|last2=Jungblut|first2=A. D.|last3=Hawes|first3=I.|last4=Andersen|first4=D. T.|last5=Mackey|first5=T. J.|last6=Wall|first6=K.|date=2016-07-29|title=Growth of elaborate microbial pinnacles in Lake Vanda, Antarctica|journal=Geobiology|language=en|volume=14|issue=6|pages=556–574|doi=10.1111/gbi.12188|pmid=27474373|issn=1472-4677}}
9. ^{{Cite journal|last=Mackey|first=T. J.|last2=Sumner|first2=D. Y.|last3=Hawes|first3=I.|last4=Leidman|first4=S. Z.|last5=Andersen|first5=D. T.|last6=Jungblut|first6=A. D.|date=2017-11-24|title=Stromatolite records of environmental change in perennially ice-covered Lake Joyce, McMurdo Dry Valleys, Antarctica|journal=Biogeochemistry|language=en|volume=137|issue=1–2|pages=73–92|doi=10.1007/s10533-017-0402-1|issn=0168-2563}}
10. ^{{Cite journal|last=Grotzinger|first=J. P.|last2=Sumner|first2=D. Y.|last3=Kah|first3=L. C.|last4=Stack|first4=K.|last5=Gupta|first5=S.|last6=Edgar|first6=L.|last7=Rubin|first7=D.|last8=Lewis|first8=K.|last9=Schieber|first9=J.|date=2013-12-09|title=A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars|journal=Science|volume=343|issue=6169|language=en|pages=1242777|doi=10.1126/science.1242777|issn=0036-8075|pmid=24324272|citeseerx=10.1.1.455.3973}}
11. ^{{Cite journal|last=Eigenbrode|first=Jennifer L.|last2=Summons|first2=Roger E.|last3=Steele|first3=Andrew|last4=Freissinet|first4=Caroline|last5=Millan|first5=Maëva|last6=Navarro-González|first6=Rafael|last7=Sutter|first7=Brad|last8=McAdam|first8=Amy C.|last9=Franz|first9=Heather B.|last10=Glavin|first10=Daniel P.|last11=Archer Jr.|first11=Paul D.|last12=Mahaffy|first12=Paul R.|last13=Conrad|first13=Pamela G.|last14=Hurowitz|first14=Joel A.|last15=Grotzinger|first15=John P.|last16=Gupta|first16=Sanjeev|last17=Ming|first17=Doug W.|last18=Sumner|first18=Dawn Y.|last19=Szopa|first19=Cyril|last20=Malespin|first20=Charles|last21=Buch|first21=Arnaud|last22=Coll|first22=Patrice|date=2018-06-08|title=Organic matter preserved in 3-billion-year-old mudstones at Gale crater, Mars|journal=Science|language=en|volume=360|issue=6393|pages=1096–1101|doi=10.1126/science.aas9185|issn=0036-8075|pmid=29880683}}
12. ^{{Cite news|url=https://www.davisenterprise.com/local-news/ucd/uc-davis-scientist-prepares-for-mars-rover-landing/|title=UC Davis scientist prepares for Mars rover landing|date=2012-08-04|work=Davis Enterprise|access-date=2018-10-09|language=en-US}}
13. ^{{Cite journal|title=NASA plans mars sample-return rover|journal=Nature|volume=509|issue=7500|pages=272|last=Witze|first=Alexandra|date=May 5, 2014|doi=10.1038/509272a|pmid=24828172}}
14. ^{{Cite web|url=http://www.geosociety.org/GSA/About/awards/GSA_Fellows/GSA/Awards/Fellows.aspx#S|title=Dawn Sumner GSA Fellow|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
15. ^{{Cite web|url=https://honors.agu.org/sfg-award-lecture/carl-sagan-lecture/|title=AGU Honors; Carl Sagan Lecture; Past Recipients; Dawn Sumner|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
16. ^{{Cite web|url=http://gsageobiology.blogspot.com/2016/09/2016-division-awards.html|title=GSA Geobiology and Geomicrobiology: 2016 Division Awards for outstanding research|last=Martindale|first=Rowan|date=2016-09-19|website=GSA Geobiology and Geomicrobiology|archive-url=|archive-date=|dead-url=|access-date=2018-10-04}}
17. ^{{Cite web|url=https://dysumner.faculty.ucdavis.edu/sexual-harassment-statement-for-my-department/|title=Sumner white paper on anti-harassment|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
18. ^{{Cite web|url=https://serc.carleton.edu/departments/heads-chairs16/index.html|title=Sumner presentation at AGU to department head and chairs on harassment|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
19. ^{{Cite web|url=https://www.apecs.is/career-resources/webinars/webinar-archive/details/10/165.html|title=Sumner presentation to polar scientists on harassment during fieldwork|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
20. ^{{Cite news|url=http://www.placerherald.com/article/10/14/15/nasa-scientist-discuss-mars-rocklin-event|title=NASA scientist to discuss Mars at Rocklin event|work=Rocklin's Placer Herald|access-date=2018-10-08|language=en}}
21. ^{{Cite news|url=https://portal.clubrunner.ca/3544/stories/your-weekly-get-up-go-has-been-updated-15|title=Your Weekly Get Up & Go has been Updated!|work=Davis Sunrise Rotary Club|access-date=2018-10-09}}
22. ^{{Cite web|url=https://www.facebook.com/events/sirc-science-in-the-river-city-november-2017/451899458503039/|title=Science in River City|last=|first=|date=November 14, 2017|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
23. ^{{Citation|last=University of California|title=The Rover Curiosity|date=2013-02-26|url=https://www.youtube.com/watch?v=ncZc65EaFL8&t=4s|access-date=2018-10-09}}
24. ^{{Cite web|url=http://catalogue.ses.fi/movies/the-other-side-of-mars/|title=The Other Side of Mars {{!}} Finnish Film Catalogue 2018|website=catalogue.ses.fi|language=en|access-date=2018-10-09}}
25. ^{{Cite web|url=https://www.popsci.com/organic-matter-rocks-on-mars|title=Is there life on Mars? TBD. But scientists found ancient organic matter in the Red Planet's rocks.|last=Griggs|first=Mary Beth|date=June 7, 2018|website=|archive-url=|archive-date=|dead-url=|access-date=October 12, 2018}}
26. ^{{Cite news|url=https://www.wired.com/2011/04/antarctica-lake-untersee/|title=Antarctic Lake Hides Bizarre Ecosystem|last=Witze|first=Alexandra|date=April 14, 2011|work=WIRED|access-date=2018-10-04|language=en-US}}
27. ^{{Cite news|url=https://www.scpr.org/programs/take-two/2013/10/10/34109/shutdown-puts-scientists-antarctica-research-on-ic/|title=Shutdown puts scientists' Antarctica research on ice|last=Radio|first=Southern California Public|date=2013-10-10|work=Southern California Public Radio|access-date=2018-10-04}}
28. ^{{Cite news|url=http://www.takepart.com/article/2015/05/18/girls-with-toys-hashtag-challenges-idea-science-playground-guys/|title='Girls With Toys’ Hashtag Challenges Idea That Science Is a Playground for Guys|work=TakePart|access-date=2018-10-04|language=en}}
29. ^{{Cite web|url=https://www.bbc.com/news/av/science-environment-19111453/mars-curiosity-rover-s-powerful-lab-kit|title=Mars rover's powerful lab kit|last=|first=|date=August 3, 2012|website=BBC News|language=en|archive-url=|archive-date=|dead-url=|access-date=2018-10-04}}

External links

  • [https://phylogenomics.me/2012/08/03/ucdavis-prof-dawn-sumner-video-interview-on-being-involved-in-mars-curiosity-rover-landing/ Sumner video interview on Curiosity rover]
  • [https://fri.ucdavis.edu/people/dawn-sumner Sumner profile at UC Davis]
  • Sumner Antarctic blog
{{Authority control}}{{DEFAULTSORT:Sumner, Dawn}}

7 : Living people|Antarctic scientists|American geologists|American women geologists|Women Antarctic scientists|University of California, Davis faculty|Year of birth missing (living people)
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