Margaret Leinen

Last updated

Margaret S. Leinen
Born (1946-09-20) September 20, 1946 (age 77)
NationalityAmerican
Alma materUniversity of Rhode Island
OccupationDirector
Known for Paleoceanography, Paleoclimatology
Scientific career
Institutions Scripps Institution of Oceanography, University of California, San Diego, University of Rhode Island
Thesis Paleochemical signatures in Cenozoic Pacific sediments  (1979)

Margaret Leinen (born September 20, 1946) is an American paleoceanographer and paleoclimatologist. In 2013, Leinen was appointed the 11th director of the Scripps Institution of Oceanography, as well as the dean of the School of Marine Sciences at the University of California, San Diego. [1] She founded the Climate Response Fund, a non-profit focused on enabling better understanding, regulation and responsible use of climate engineering research, and served as its president for a time. For two years, Leinen also worked as chief science officer for a startup company in green technology and climate change mitigation. [2] Leinen has also served as the U.S. Department of State science envoy for the oceans to Latin America and the Pacific. [3]

Contents

Education

In 1969 Leinen received her Bachelor of Science degree in Geology from the University of Illinois, a master's in geological oceanography from Oregon State University in 1975, [4] and her doctorate in oceanography in 1980 from the University of Rhode Island. [5] [6]

Honors

She has been elected fellow of the American Association for the Advancement of Science [7] and of the Geological Society of America. [8] In 2016, she was selected as a U.S. Science Envoy by the United States State Department. [9] In 2020, Leinen was elected to the American Academy of Arts and Sciences [10] [2] and was named a fellow of The Oceanography Society [11] and an Honorary Member of the AMS in 2022. [12]

Service

Dr. Leinen was selected to serve as co-chair of the Decade Advisory Board for UN Decade of Ocean Science for Sustainable Development and is a member of the distinguished Leadership Council of the Joint Ocean Commission Initiative. She has served as President of the American Geophysical Union, Chair of the Atmospheric and Hydrospheric Science Section of the American Academy for the Advancement of Science, and President of The Oceanography Society. She serves on the boards of the California Ocean Science Trust and Science Counts. She is the Vice Chair of the Research Board of the $500 million Gulf of Mexico Research Initiative.

Selected Publications

Related Research Articles

<span class="mw-page-title-main">Oceanography</span> Study of physical, chemical, and biological processes in the ocean

Oceanography, also known as oceanology, sea science,ocean science, and marine science, is the scientific study of the oceans. It is an Earth science, which covers a wide range of topics, including ecosystem dynamics; ocean currents, waves, and geophysical fluid dynamics; plate tectonics and seabed geology; and fluxes of various chemical substances and physical properties within the ocean and across its boundaries. These diverse topics reflect multiple disciplines that oceanographers utilize to glean further knowledge of the world ocean, including astronomy, biology, chemistry, geography, geology, hydrology, meteorology and physics. Paleoceanography studies the history of the oceans in the geologic past. An oceanographer is a person who studies many matters concerned with oceans, including marine geology, physics, chemistry, and biology.

<span class="mw-page-title-main">Harald Sverdrup (oceanographer)</span> Norwegian oceanographer (1888–1957)

Harald Ulrik Sverdrup was a Norwegian oceanographer and meteorologist. He served as director of the Scripps Institution of Oceanography and the Norwegian Polar Institute.

<span class="mw-page-title-main">East Pacific Rise</span> A mid-oceanic ridge at a divergent tectonic plate boundary on the floor of the Pacific Ocean

The East Pacific Rise (EPR) is a mid-ocean rise, at a divergent tectonic plate boundary, located along the floor of the Pacific Ocean. It separates the Pacific Plate to the west from the North American Plate, the Rivera Plate, the Cocos Plate, the Nazca Plate, and the Antarctic Plate. It runs south from the Gulf of California in the Salton Sea basin in Southern California to a point near 55°S130°W, where it joins the Pacific-Antarctic Ridge (PAR) trending west-south-west towards Antarctica, near New Zealand. Much of the rise lies about 3,200 km (2,000 mi) off the South American coast and reaches a height about 1,800–2,700 m (5,900–8,900 ft) above the surrounding seafloor.

Paleoceanography is the study of the history of the oceans in the geologic past with regard to circulation, chemistry, biology, geology and patterns of sedimentation and biological productivity. Paleoceanographic studies using environment models and different proxies enable the scientific community to assess the role of the oceanic processes in the global climate by the re-construction of past climate at various intervals. Paleoceanographic research is also intimately tied to paleoclimatology.

<span class="mw-page-title-main">Tanya Atwater</span> American geophysicist and marine geologist

Tanya Atwater is an American geophysicist and marine geologist who specializes in plate tectonics. She is particularly renowned for her early research on the plate tectonic history of western North America.

<span class="mw-page-title-main">Stephen E. Calvert</span> Canadian scientist

Stephen E. (Steve) Calvert, PhD, FRSC is a professor emeritus at the University of British Columbia. He has specialized in the study of chemical and geochemical oceanography. His work has shed light on the factors responsible for the wide compositional variability of marine sediments, the controls on organic matter burial and nutrient utilization in the ocean.

<span class="mw-page-title-main">Henry William Menard</span> American geologist (1920–1986)

Henry William Menard was an American geologist.

<span class="mw-page-title-main">Miriam Kastner</span> American oceanographer and geochemist (born 1935)

Miriam Kastner is a Bratislavan born, Israeli raised, American oceanographer and geochemist. Kastner is currently a distinguished professor at Scripps Institution of Oceanography at the University of California, San Diego. She is still recognized by her fundamental contributions to science and is well spoken of amongst colleagues.

<span class="mw-page-title-main">Wolfgang H. Berger</span> American paleontologist

Wolfgang "Wolf" Helmut Berger was a German-American oceanographer, geologist, micropaleontologist and emeritus professor at the Scripps Institution of Oceanography, University of California, San Diego. His research interests comprise "micropaleontology, marine sedimentation, ocean productivity, carbon cycle, ocean history, climate history, and history of oceanography."

Ellen Druffel is an American oceanographer and isotope geochemist known for her research using radiocarbon to track marine processes.

<span class="mw-page-title-main">Axel Timmermann</span> German climate physicist and oceanographer

Axel Timmermann is a German climate physicist and oceanographer with an interest in climate dynamics, human migration, dynamical systems' analysis, ice-sheet modeling and sea level. He served a co-author of the IPCC Third Assessment Report and a lead author of IPCC Fifth Assessment Report. His research has been cited over 18,000 times and has an h-index of 70 and i10-index of 161. In 2017, he became a Distinguished Professor at Pusan National University and the founding Director of the Institute for Basic Science Center for Climate Physics. In December 2018, the Center began to utilize a 1.43-petaflop Cray XC50 supercomputer, named Aleph, for climate physics research.

Kathleen (Kathy) Crane is an American marine geologist, best known for her contributions to the discovery of hydrothermal vents on the Galápagos Rift along the East Pacific Rise in the mid-1970s.

<span class="mw-page-title-main">RISE project</span> 1979 international marine research project

The RISE Project (Rivera Submersible Experiments) was a 1979 international marine research project which mapped and investigated seafloor spreading in the Pacific Ocean, at the crest of the East Pacific Rise (EPR) at 21° north latitude. Using a deep sea submersible (ALVIN) to search for hydrothermal activity at depths around 2600 meters, the project discovered a series of vents emitting dark mineral particles at extremely high temperatures which gave rise to the popular name, "black smokers". Biologic communities found at 21° N vents, based on chemosynthesis and similar to those found at the Galapagos spreading center, established that these communities are not unique. Discovery of a deep-sea ecosystem not based on sunlight spurred theories of the origin of life on Earth.

Margaret (Peggy) Delaney is marine geochemist known for her research on trace elements to examine changes in ocean chemistry over time.

Ana Ravelo is a paleoceanographer known for her research on tropical oceans. She is a professor at the University of California Santa Cruz and was elected a fellow of the American Geophysical Union in 2012.

Rachel Haymon is a marine geologist known for her work linking geological and biological processes occurring at deep-sea hydrothermal vents. In 2005 she was elected a fellow of the Geological Society of America.

Global paleoclimate indicators are the proxies sensitive to global paleoclimatic environment changes. They are mostly derived from marine sediments. Paleoclimate indicators derived from terrestrial sediments, on the other hand, are commonly influenced by local tectonic movements and paleogeographic variations. Factors governing the Earth's climate system include plate tectonics, which controls the configuration of continents, the interplay between the atmosphere and the ocean, and the Earth's orbital characteristics. Global paleoclimate indicators are established based on the information extracted from the analyses of geologic materials, including biological, geochemical and mineralogical data preserved in marine sediments. Indicators are generally grouped into three categories; paleontological, geochemical and lithological.

The Agulhas Leakage is an inflow of anomalously warm and saline water from the Indian Ocean into the South Atlantic due to the limited latitudinal extent of the African continent compared to the southern extension of the subtropical super gyre in the Indian Ocean. The process occurs during the retroflection of the Agulhas Current via shedding of anticyclonic Agulhas Rings, cyclonic eddies and direct inflow. The leakage contributes to the Atlantic Meridional Overturning Circulation (AMOC) by supplying its upper limb, which has direct climate implications.

Jennifer Ann Mackinnon is an American physical oceanographer who has studied small-scale dynamical processes in oceans for more than 20 years. These processes include internal waves and ocean mixing, turbulence, sub-mesoscale instabilities, and their complex interaction. She is a professor at the Scripps Institution of Oceanography (SIO) of the University of California, San Diego (UCSD). Her research requires extensive fieldwork at sea to observe these processes.

References

  1. "New Vice Chancellor for Marine Sciences Creates Vision for Scripps Oceanography". Scripps Institution of Oceanography, UC San Diego. October 24, 2013. Archived from the original on September 10, 2018. Retrieved July 1, 2014.
  2. 1 2 "Margaret S. Leinen". American Academy of Arts & Sciences. Retrieved May 18, 2021.
  3. "U.S. Science Envoy Program". United States Department of State. Retrieved February 18, 2024.
  4. Leinen, Margaret (1976). Biogenic silica sedimentation in the central equatorial Pacific during the Cenozoic (Thesis). Corvallis, Or. OCLC   837589083.
  5. "Director's Biography". Scripps Institution of Oceanography, UC San Diego. March 2014. Archived from the original on April 27, 2015. Retrieved July 1, 2014.
  6. Leinen, Margaret S (1979). Paleochemical signatures in Cenozoic Pacific sediments (Thesis). OCLC   8613242.
  7. "American Association for the Advancement of Science". Archived from the original on January 6, 2015. Retrieved January 13, 2015.
  8. "Geological Society of America" . Retrieved January 13, 2015.
  9. "Announcement of U.S. Science Envoys". United States Department of State. February 26, 2016. Retrieved May 19, 2016.
  10. "Four from UC San Diego Elected to American Academy of Arts and Sciences". Scripps Institution of Oceanography. April 24, 2020. Retrieved May 18, 2021.
  11. "tos-fellows-meet | The Oceanography Society". tos.org. Retrieved June 1, 2021.
  12. "Search Past Award & Honors Recipients".
  13. Leinen, Margaret, "The pelagic clay province of the North Pacific Ocean", The Eastern Pacific Ocean and Hawaii, North America: Geological Society of America, pp. 323–335, doi:10.1130/dnag-gna-n.323 , retrieved February 18, 2024
  14. Blank, Marsha; Leinen, Margaret; Prospero, Joseph M. (March 1985). "Major Asian aeolian inputs indicated by the mineralogy of aerosols and sediments in the western North Pacific". Nature. 314 (6006): 84–86. doi:10.1038/314084a0. ISSN   1476-4687.
  15. Schmidt, Gavin A.; Severinghaus, Jeff; Abe-Ouchi, Ayako; Alley, Richard B.; Broecker, Wallace; Brook, Ed; Etheridge, David; Kawamura, Kenji; Keeling, Ralph F.; Leinen, Margaret; Marvel, Kate; Stocker, Thomas F. (July 2017). "Overestimate of committed warming". Nature. 547 (7662): E16–E17. doi:10.1038/nature22803. ISSN   1476-4687. PMC   5885753 . PMID   28703191.
  16. Doh, Seong‐Jae; King, John W.; Leinen, Margaret (August 1988). "A rock‐magnetic study of giant piston core LL44‐GPC3 from the central North Pacific and its paleoceanographic implications". Paleoceanography. 3 (1): 89–111. doi:10.1029/PA003i001p00089. ISSN   0883-8305.
  17. Rea, David K.; Leinen, Margaret; Janecek, Thomas R. (February 15, 1985). "Geologic Approach to the Long-Term History of Atmospheric Circulation". Science. 227 (4688): 721–725. doi:10.1126/science.227.4688.721. ISSN   0036-8075.
  18. "Mineralogy of aeolian dust reaching the North Pacific Ocean: 1. Sampling and analysis". Journal of Geophysical Research: Atmospheres. 99 (D10): 21017–21023. October 20, 1994. doi:10.1029/94JD01735. ISSN   0148-0227.