Catherine Jeandel

Last updated
Catherine Jeandel
Born1957
Alma materUniversité Paris Diderot - Paris
Scientific career
Thesis Comportement géochimique des isotopes du plutonium dans les milieux naturels (lacustre, fluvial, estuarien)  (1981)

Catherine Jeandel is a French geochemical oceanographer known for her research on isotope geochemistry and trace elements in the ocean.

Contents

Education and career

Jeandel grew up in northern Brittany wanting to be an ocean scientist, despite a lack of interest in mathematics. [1] She was a student at the École normale supérieure de Sèvres from 1977 to 1982. [2] Jeandel earned a B.S. and her Ph.D. at the University of Paris VII. [3]

From 1982 until 1983, she was a research associate at the Institut de Physique du Globe de Paris. [2] She joined the Centre national de la recherche scientifique (CNRS) in 1983. From 1988 until 1990, Jeandel was at the Lamont-Doherty Geological Observatory. She was promoted to research director at the CNRS in 2007. [2]

In 2018, Jeandel was elected a fellow of the American Geophysical Union who cited her "for fundamental research on the marine biogeochemical cycles of trace elements and for exploiting them as tracers in chemical and paleoceanography". [4]

Research

Jeandel is known for her research on trace elements found in seawater and on marine particles, include investigations into vanadium, [5] chromium, [6] and neodymium. [7] [8] She has examined trace elements at multiple locations in the global ocean, include time-series sites such as KERFIX, in the Southern Ocean, [9] and the EUMELI sites in the Atlantic Ocean. [10] A portion of her research examines the role of particles from land that transport trace elements into marine systems [11] [12] Jeandel served on the Scientific Steering Committee [13] of the GEOTRACES project, where she focused on the transport of trace elements into the global ocean. [14] [15]

Selected publications

Awards and honors

Related Research Articles

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Isotope geochemistry is an aspect of geology based upon the study of natural variations in the relative abundances of isotopes of various elements. Variations in isotopic abundance are measured by isotope ratio mass spectrometry, and can reveal information about the ages and origins of rock, air or water bodies, or processes of mixing between them.


Professor Henry "Harry" Elderfield, was Professor of Ocean Chemistry and Palaeochemistry at the Godwin Laboratory in the Department of Earth Sciences at the University of Cambridge. He made his name in ocean chemistry and palaeochemistry, using trace metals and isotopes in biogenic carbonate as palaeochemical tracers, and studying the chemistry of modern and ancient oceans - especially those of the glacial epoch and the Cenozoic.

GEOTRACES is an international research programme that aims to improve an understanding of biogeochemical cycles in the oceans.

<span class="mw-page-title-main">Ocean island basalt</span> Volcanic rock

Ocean island basalt (OIB) is a volcanic rock, usually basaltic in composition, erupted in oceans away from tectonic plate boundaries. Although ocean island basaltic magma is mainly erupted as basalt lava, the basaltic magma is sometimes modified by igneous differentiation to produce a range of other volcanic rock types, for example, rhyolite in Iceland, and phonolite and trachyte at the intraplate volcano Fernando de Noronha. Unlike mid-ocean ridge basalts (MORBs), which erupt at spreading centers (divergent plate boundaries), and volcanic arc lavas, which erupt at subduction zones (convergent plate boundaries), ocean island basalts are the result of intraplate volcanism. However, some ocean island basalt locations coincide with plate boundaries like Iceland, which sits on top of a mid-ocean ridge, and Samoa, which is located near a subduction zone.

The Cenomanian-Turonian boundary event, also known as the Cenomanian-Turonian extinction, Cenomanian-Turonian oceanic anoxic event, and referred to also as the Bonarelli event, was one of two anoxic extinction events in the Cretaceous period. The Cenomanian-Turonian oceanic anoxic event is considered to be the most recent truly global oceanic anoxic event in Earth's geologic history. Selby et al. in 2009 concluded the OAE 2 occurred approximately 91.5 ± 8.6 Ma, though estimates published by Leckie et al. (2002) are given as 93–94 Ma. The Cenomanian-Turonian boundary has been refined in 2012 to 93.9 ± 0.15 Ma. There was a large carbon cycle disturbance during this time period, signified by a large positive carbon isotope excursion. However, apart from the carbon cycle disturbance, there were also large disturbances in the ocean's nitrogen, oxygen, phosphorus, sulphur, and iron cycles.

<span class="mw-page-title-main">Donald J. DePaolo</span> American geochemist

Donald James DePaolo is an American professor of geochemistry in the department of earth and planetary science at the University of California, Berkeley and associate laboratory director for energy and environmental sciences at the Lawrence Berkeley National Laboratory.

Reverse weathering generally refers to the formation of a clay neoformation that utilizes cations and alkalinity in a process unrelated to the weathering of silicates. More specifically reverse weathering refers to the formation of authigenic clay minerals from the reaction of 1) biogenic silica with aqueous cations or cation bearing oxides or 2) cation poor precursor clays with dissolved cations or cation bearing oxides.

Sunil Kumar Singh is a leading Indian geochemist, a professor at the Physical Research Laboratory and currently the director of the National Institute of Oceanography, India. He is known for his studies on low temperature elemental and isotope geochemistry and his researches are reported to have assisted in widening the understanding of the evolution of the Himalayas. His studies have been documented in several peer-reviewed articles; Google Scholar, an online repository of scientific articles, has listed 99 of them respectively.

Tina van de Flierdt is a Professor of Isotope Geochemistry at Imperial College London.

Carbonate-associated sulfates (CAS) are sulfate species found in association with carbonate minerals, either as inclusions, adsorbed phases, or in distorted sites within the carbonate mineral lattice. It is derived primarily from dissolved sulfate in the solution from which the carbonate precipitates. In the ocean, the source of this sulfate is a combination of riverine and atmospheric inputs, as well as the products of marine hydrothermal reactions and biomass remineralisation. CAS is a common component of most carbonate rocks, having concentrations in the parts per thousand within biogenic carbonates and parts per million within abiogenic carbonates. Through its abundance and sulfur isotope composition, it provides a valuable record of the global sulfur cycle across time and space.

Adina Paytan is a research professor at the Institute of Marine Sciences at the University of California, Santa Cruz. known for research into biogeochemical cycling in the present and the past. She has over 270 scientific publications in journals such as Science, Nature, Proceedings of the National Academy of Sciences, and Geophysical Research Letters.

Stanley Robert Hart is an American geologist, geochemist, leading international expert on mantle isotope geochemistry, and pioneer of chemical geodynamics.

Trace metal stable isotope biogeochemistry is the study of the distribution and relative abundances of trace metal isotopes in order to better understand the biological, geological, and chemical processes occurring in an environment. Trace metals are elements such as iron, magnesium, copper, and zinc that occur at low levels in the environment. Trace metals are critically important in biology and are involved in many processes that allow organisms to grow and generate energy. In addition, trace metals are constituents of numerous rocks and minerals, thus serving as an important component of the geosphere. Both stable and radioactive isotopes of trace metals exist, but this article focuses on those that are stable. Isotopic variations of trace metals in samples are used as isotopic fingerprints to elucidate the processes occurring in an environment and answer questions relating to biology, geochemistry, and medicine.

<span class="mw-page-title-main">Lithium cycle</span>

The lithium cycle (Li) is the biogeochemical cycle of lithium through the lithosphere and hydrosphere.

Sidney Hemming is an analytical geochemist known for her work documenting Earth's history through analysis of sediments and sedimentary rocks. She is a professor of earth and environmental sciences at Columbia University.

Catherine Chauvel is a geochemist at the Institut de Physique du Globe de Paris known for her research on the impact of volcanic activity on the chemistry of the mantle, continental crust, and island arc geochemistry.

Zanna Chase is an ocean-going professor of chemical oceanography and paleoceanography at the Institute of Marine and Antarctic Science, University of Tasmania, Australia. She has undertaken over 20 voyages on research vessels, and her areas of expertise are Antarctic paleoclimate, marine carbon cycle, radionuclides in the ocean, sediment geochemistry, paleoceanography, and marine biogeochemistry. In 2013 she was awarded an ARC Future Fellowship.

Elizabeth A. Canuel is a chemical oceanographer known for her work on organic carbon cycling in aquatic environments. She is the Chancellor Professor of Marine Science at the College of William & Mary and is an elected fellow of the Geochemical Society and the European Association of Geochemistry.

The Neoproterozoic Oxygenation Event (NOE), also called the Second Great Oxidation Event, was a time interval between around 850 and 540 million years ago which saw a very significant increase in oxygen levels in Earth's atmosphere and oceans. Bringing an end to the Boring Billion, a period of extremely low atmospheric oxygen spanning from the Statherian to the Tonian, the NOE was the second major increase in environmental oxygen on Earth, though it was not as major as the Great Oxidation Event (GOE). Unlike the GOE, it is unclear whether the NOE was a synchronous, global event or a series of asynchronous, regional oxygenation intervals with unrelated causes.

References

  1. ↑ "Catherine Jeandel | CNRS". www.cnrs.fr. Retrieved 2021-09-12.
  2. 1 2 3 "Catherine Jeandel élue à la présidence du Conseil Académique de l'Université Fédérale | Université de Toulouse". www.univ-toulouse.fr. Retrieved 2021-09-12.
  3. ↑ "Meet your 2014 Board of Directors" (PDF). Elements. December 2014. Archived (PDF) from the original on 2015-06-30. Retrieved September 11, 2021.
  4. 1 2 "Jeandel". Honors Program. Retrieved 2021-09-11.
  5. ↑ Jeandel, C; Caisso, M; Minster, J.F (1987). "Vanadium behaviour in the global ocean and in the Mediterranean sea". Marine Chemistry. 21 (1): 51–74. Bibcode:1987MarCh..21...51J. doi:10.1016/0304-4203(87)90029-6.
  6. ↑ Jeandel, C; Minster, J.-F (1984). "Isotope dilution measurement of inorganic chromium(III) and total chromium in seawater". Marine Chemistry. 14 (4): 347–364. Bibcode:1984MarCh..14..347J. doi:10.1016/0304-4203(84)90030-6.
  7. ↑ Jeandel, C. (1993). "Concentration and isotopic composition of Nd in the South Atlantic Ocean". Earth and Planetary Science Letters. 117 (3–4): 581–591. Bibcode:1993E&PSL.117..581J. doi: 10.1016/0012-821X(93)90104-H .
  8. ↑ Jeandel, C.; Bishop, J.K.; Zindler, A. (1995). "Exchange of neodymium and its isotopes between seawater and small and large particles in the Sargasso Sea". Geochimica et Cosmochimica Acta. 59 (3): 535–547. Bibcode:1995GeCoA..59..535J. doi: 10.1016/0016-7037(94)00367-U .
  9. ↑ Jeandel, Catherine; Ruiz-Pino, Diana; Gjata, Elvis; Poisson, Alain; Brunet, Christian; Charriaud, Edwige; Dehairs, Frank; Delille, Daniel; Fiala, Michel; Fravalo, Charles; Carlos Miquel, Juan (1998). "KERFIX, a time-series station in the Southern Ocean: a presentation". Journal of Marine Systems. 17 (1–4): 555–569. Bibcode:1998JMS....17..555J. doi:10.1016/S0924-7963(98)00064-5.
  10. ↑ Jeandel, C.; Tachikawa, K.; Bory, A.; Dehairs, F. (2000). "Biogenic barium in suspended and trapped material as a tracer of export production in the tropical NE Atlantic (EUMELI sites)". Marine Chemistry. 71 (1–2): 125–142. Bibcode:2000MarCh..71..125J. doi:10.1016/S0304-4203(00)00045-1.
  11. ↑ Jeandel, Catherine; Oelkers, Eric H. (2015). "The influence of terrigenous particulate material dissolution on ocean chemistry and global element cycles". Chemical Geology. 395: 50–66. Bibcode:2015ChGeo.395...50J. doi:10.1016/j.chemgeo.2014.12.001.
  12. ↑ Jeandel, Catherine (2016). "Overview of the mechanisms that could explain the 'Boundary Exchange' at the land–ocean contact". Philosophical Transactions: Mathematical, Physical and Engineering Sciences. 374 (2081): 1–13. Bibcode:2016RSPTA.37450287J. doi:10.1098/rsta.2015.0287. ISSN   1364-503X. JSTOR   26120738. PMC   5069524 . PMID   29035253.
  13. ↑ "Past SSC members – GEOTRACES" . Retrieved 2021-09-12.
  14. ↑ ANDERSON, ROBERT F.; MAWJI, EDWARD; CUTTER, GREGORY A.; MEASURES, CHRISTOPHER I.; JEANDEL, CATHERINE (2014). "GEOTRACES: Changing the Way We Explore Ocean Chemistry". Oceanography. 27 (1): 50–61. doi: 10.5670/oceanog.2014.07 . ISSN   1042-8275. JSTOR   24862118.
  15. ↑ Charette, Matthew A.; Lam, Phoebe J.; Lohan, Maeve C.; Kwon, Eun Young; Hatje, Vanessa; Jeandel, Catherine; Shiller, Alan M.; Cutter, Gregory A.; Thomas, Alex; Boyd, Philip W.; Homoky, William B. (2016). "Coastal ocean and shelf-sea biogeochemical cycling of trace elements and isotopes: lessons learned from GEOTRACES". Philosophical Transactions: Mathematical, Physical and Engineering Sciences. 374 (2081): 1–19. Bibcode:2016RSPTA.37460076C. doi:10.1098/rsta.2016.0076. ISSN   1364-503X. JSTOR   26120752. PMC   5069537 . PMID   29035267.
  16. ↑ "Catherine Jeandel | CNRS". www.cnrs.fr (in French). Retrieved 2021-09-11.
  17. ↑ "Ordre de la Légion d'honneur - Nominations, promotions et élévations du 31-12-2008". www.france-phaleristique.com. December 31, 2008. Archived from the original on 2009-05-17. Retrieved 2021-09-11.
  18. ↑ "Congratulations to Catherine Jeandel! – GEOTRACES". June 29, 2015. Archived from the original on 2020-12-03. Retrieved 2021-09-11.
  19. ↑ "Lauréats 2018 des prix thématiques | Lauréats | Prix et médailles | Encourager la vie scientifique". www.academie-sciences.fr. 2018. Archived from the original on 2021-02-28. Retrieved 2021-09-11.
  20. ↑ "Congratulations to Catherine Jeandel! – GEOTRACES" . Retrieved 2021-09-11.
  21. ↑ "Geochemistry Fellows | Geochemical Society". www.geochemsoc.org. Retrieved 2021-09-11.
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