Stephen Self

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Stephen Self
NationalityBritish
Alma mater University of Leeds (BSc, 1970)
Imperial College (PhD, 1974)
Known forClimate impacts of volcanism; flood basalts and supereuptions.
Scientific career
FieldsVolcanologist
Institutions Arizona State University
University of Texas, Arlington
University of Hawaiʻi at Mānoa
Open University
Nuclear Regulatory Commission
Doctoral advisor George P.L. Walker

Stephen Self is a British volcanologist, best known for his work on large igneous provinces and on the global impacts of volcanic eruptions. [1] [2]

Contents

Education and career

Self graduated from Leeds University in 1970, with a BSc in geology. He then went to Imperial College to study for a PhD on the recent volcanology of Terceira, [3] Azores, supervised by George P. L. Walker. After completing his PhD thesis in 1974, Self moved to New Zealand as a post-doctoral fellow at Victoria University, Wellington, before moving to the United States as a NASA Research Fellow, first at Dartmouth College from 1977 to 1979 and then at the NASA Goddard Institute for Space Studies (1977–1979). He was Assistant Professor at Arizona State University from 1979 to 1983, and later Associate Professor and then Professor at University of Texas, Arlington from 1983 to 1990. [4] [5] In 1990, Self moved to the University of Hawaiʻi at Mānoa, Honolulu as Professor, before returning to the UK in 2001 to take up a Chair in Volcanology at The Open University. From 2008 to 2018, Self worked for the US Nuclear Regulatory Commission as Senior Volcanologist. He is currently adjunct Professor at University of California, Berkeley. [6]

Contributions

Self has made many contributions to volcanology through his research and publications. He is best known for his work on very large eruptions and their impacts. In 1979, he was the first scientist of the modern era to visit the crater of Tambora volcano, in Indonesia. The 1815 eruption of Tambora was the largest and most deadly eruptipn of the past 750 years, and led to the infamous 'Year without a Summer' of 1816. [7] With Christopher G. Newhall he conceived the Volcanic Explosivity Index in 1982, [8] which is still widely used as a comparator of eruption sizes. With Michael R. Rampino, Self developed hypotheses about the links between large explosive volcanic eruptions and climate, [9] and published studies on the large Quaternary eruptions of Toba, Tambora and Krakatoa, among others. [10] [11] [12] [13] With Thor Thordarsson, Self has also written extensively on the Icelandic eruptions of 1783–4, [14] and on the emplacement and inflation of large basaltic lava flows. [15] [16]

Service and recognition

Self was Vice-President of the International Association of Volcanology and Chemistry of the Earth's Interior from 2011-2015. [17] In 2012, he was elected Fellow of the American Geophysical Union; an honour which recognises 'individual members who have made exceptional scientific contributions and attained acknowledged eminence'. [18] He has also been elected Fellow of the Geological Society of America.

Related Research Articles

<span class="mw-page-title-main">Supervolcano</span> Volcano that has had an eruption with a volcanic explosivity index (VEI) of 8

A supervolcano is a volcano that has had an eruption with a volcanic explosivity index (VEI) of 8, the largest recorded value on the index. This means the volume of deposits for such an eruption is greater than 1,000 cubic kilometers.

<span class="mw-page-title-main">Volcano</span> Rupture in a planets crust where material escapes

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. The process that forms volcanoes is called volcanism.

<span class="mw-page-title-main">Volcanic explosivity index</span> Predictive Qualitative scale for explosiveness of volcanic eruptions

The volcanic explosivity index (VEI) is a scale used to measure the size of explosive volcanic eruptions. It was devised by Christopher G. Newhall of the United States Geological Survey and Stephen Self in 1982.

<span class="mw-page-title-main">Mount Tambora</span> Active stratovolcano in Sumbawa in Indonesia

Mount Tambora, or Tomboro, is an active stratovolcano in West Nusa Tenggara, Indonesia. Located on Sumbawa in the Lesser Sunda Islands, it was formed by the active subduction zones beneath it. Before 1815, its elevation reached more than 4,300 metres high, making it one of the tallest peaks in the Indonesian archipelago.

<span class="mw-page-title-main">Volcanologist</span> Scientist who studies volcanoes

A volcanologist, or volcano scientist, is a geologist who focuses on understanding the formation and eruptive activity of volcanoes. Volcanologists frequently visit volcanoes, sometimes active ones, to observe and monitor volcanic eruptions, collect eruptive products including tephra, rock and lava samples. One major focus of inquiry in recent times is the prediction of eruptions to alleviate the impact on surrounding populations and monitor natural hazards associated with volcanic activity. Geologists who research volcanic materials that make up the solid Earth are referred to as igneous petrologists.

<span class="mw-page-title-main">Plinian eruption</span> Type of volcanic eruption

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<span class="mw-page-title-main">Sunda Arc</span> Volcanic island arc in Indonesia

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<span class="mw-page-title-main">Haraldur Sigurðsson</span> Icelandic volcanologist and geochemist (born 1939)

Haraldur Sigurðsson or Haraldur Sigurdsson is an Icelandic volcanologist and geochemist.

George Patrick Leonard Walker was a British geologist who began his career studying mineralogy and later made significant contributions to volcanology. He was widely regarded as one of the pioneers of modern quantitative volcanology.

<span class="mw-page-title-main">Strombolian eruption</span> Type of volcanic eruption with relatively mild explosive intensity

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<span class="mw-page-title-main">Trachyandesite</span> Extrusive igneous rock

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Christopher G. Newhall is a volcanologist, formerly with the U.S. Geological Survey and the Earth Observatory of SingaporeArchived 2011-11-30 at the Wayback Machine. He is the co-creator of the Volcanic explosivity index and specializes in volcanic prediction.

<span class="mw-page-title-main">Timeline of volcanism on Earth</span>

This timeline of volcanism on Earth includes a list of major volcanic eruptions of approximately at least magnitude 6 on the Volcanic explosivity index (VEI) or equivalent sulfur dioxide emission during the Quaternary period. Other volcanic eruptions are also listed.

Bruce F. Houghton is a New Zealand volcanologist. He was a student at Auckland University, and University of Otago, where he completed a PhD in 1977 on the geology of the Takatimu Mountains in western Southland.

<span class="mw-page-title-main">1808 mystery eruption</span> Volcanic eruption in southwest Pacific

The 1808 mystery eruption is one or potentially multiple unidentified volcanic eruptions that resulted in a significant rise in stratospheric sulfur aerosols, leading to a period of global cooling analogous to the Year Without a Summer in 1816.

<span class="mw-page-title-main">Michael R. Rampino</span> American geologist

Michael R. Rampino is a Geologist and Professor of Biology and Environmental Studies at New York University, known for his scientific contributions on causes of mass extinctions of life. Along with colleagues, he's developed theories about periodic mass extinctions being strongly related to the earth's position in relation to the galaxy. "The solar system and its planets experience cataclysms every time they pass "up" or "down" through the plane of the disk-shaped galaxy." These ~30 million year cyclical breaks are an important factor in evolutionary theory, along with other longer 60-million- and 140-million-year cycles potentially caused by mantle plumes within the planet, opining "The Earth seems to have a pulse," He is also a research consultant at NASA's Goddard Institute for Space Studies (GISS) in New York City.

There are two large sulfate spikes caused by mystery volcanic eruptions in the mid-1400s: the 1452/1453 mystery eruption and 1458 mystery eruption. Before 2012, the date of 1458 sulfate spike was incorrectly assigned to be 1452 because previous ice core work had poor time resolution. The exact location of this eruption is uncertain, but possible candidates include the submerged caldera of Kuwae in the Coral Sea, Mount Reclus and Tofua caldera. The eruption is believed to have been VEI-7.

<span class="mw-page-title-main">Tierra Blanca Joven eruption</span> Catastrophic volcanic eruption of Lake Ilopango in El Salvador

The Tierra Blanca Joven eruption of Lake Ilopango was the largest volcanic eruption in El Salvador during historic times, and one of the largest volcanic events on Earth in the past 7,000 years, registering at 6 on the Volcanic explosivity index (VEI), and dating back to the mid 5th century A.D. The eruption produced between 37–82 km3 (8.9–19.7 cu mi) of ejecta. The date of the eruption has been constrained within 429–433 CE by identifying its signature volcanic ash in precision-dated ice cores sampled from Greenland, thus eliminating it as the cause of extreme weather events of 535–536.

References

  1. Newhall, Chris; Self, Stephen; Robock, Alan (28 February 2018). "Anticipating future Volcanic Explosivity Index (VEI) 7 eruptions and their chilling impacts". Geosphere. 14 (2): 572–603. Bibcode:2018Geosp..14..572N. doi: 10.1130/ges01513.1 .
  2. "The Volcanic Explosivity Index: A tool for comparing the sizes of explosive volcanic eruptions | U.S. Geological Survey". www.usgs.gov.
  3. SELF, STEPHEN (12 November 1976). "The Recent volcanology of Terceira, Azores". Journal of the Geological Society. 132 (6): 645–666. Bibcode:1976JGSoc.132..645S. doi:10.1144/gsjgs.132.6.0645. S2CID   129010185.
  4. "The Authors". Scientific American. 250 (1): 8–9. 1984. Bibcode:1984SciAm.250a...8.. doi:10.1038/scientificamerican0184-8. JSTOR   24969270.
  5. Experience and affiliations Official Website
  6. "NASA Earth Observatory Image of the Day". 18 May 2020.
  7. Sanders, Robert (31 March 2015). "200th anniversary of Tambora eruption" via UC Berkeley News.
  8. Newhall, Christopher G.; Self, Stephen (12 February 1982). "The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism". Journal of Geophysical Research. 87 (C2): 1231. Bibcode:1982JGR....87.1231N. doi:10.1029/JC087iC02p01231.
  9. Rampino, Michael R.; Self, Stephen; Fairbridge, Rhodes W. (16 November 1979). "Can Rapid Climatic Change Cause Volcanic Eruptions?". Science. 206 (4420): 826–829. Bibcode:1979Sci...206..826R. doi:10.1126/science.206.4420.826. PMID   17820760. S2CID   23417321.
  10. Rampino, Michael R.; Self, Stephen (12 September 1992). "Volcanic winter and accelerated glaciation following the Toba super-eruption". Nature. 359 (6390): 50–52. Bibcode:1992Natur.359...50R. doi:10.1038/359050a0. S2CID   4322781 via www.nature.com.
  11. Rampino, Michael R.; Self, Stephen (12 September 1982). "Historic Eruptions of Tambora (1815), Krakatau (1883), and Agung (1963), their Stratospheric Aerosols, and Climatic Impact". Quaternary Research. 18 (2): 127–143. Bibcode:1982QuRes..18..127R. doi:10.1016/0033-5894(82)90065-5. S2CID   140594715 via Cambridge University Press.
  12. Rampino, M R; Self, S; Stothers, R B (12 May 1988). "Volcanic Winters". Annual Review of Earth and Planetary Sciences. 16 (1): 73–99. Bibcode:1988AREPS..16...73R. doi:10.1146/annurev.ea.16.050188.000445.
  13. Robert Roy Britt (8 March 2005). "Super Volcano Will Challenge Civilization, Geologists Warn". livescience.com.
  14. Thordarson, Th; Self, S. (1 May 1993). "The Laki (Skaftár Fires) and Grímsvötn eruptions in 1783–1785". Bulletin of Volcanology. 55 (4): 233–263. Bibcode:1993BVol...55..233T. doi:10.1007/BF00624353. S2CID   128734995 via Springer Link.
  15. Self, S.; Keszthelyi, L.; Thordarson, Th. (12 May 1998). "THE IMPORTANCE OF PĀHOEHOE". Annual Review of Earth and Planetary Sciences. 26 (1): 81–110. Bibcode:1998AREPS..26...81S. doi:10.1146/annurev.earth.26.1.81.
  16. O'Hanlon, Larry (2007). "News in Science - Did mega-volcanoes kill the dinosaurs? - 29/10/2007". www.abc.net.au.
  17. Cas, Ray A.F. (11 January 2022). "The centenary of IAVCEI 1919–2019 and beyond: origins and evolution of the International Association of Volcanology and Chemistry of the Earth's Interior". Bulletin of Volcanology. 84 (2): 15. Bibcode:2022BVol...84...15C. doi:10.1007/s00445-021-01509-5. PMC   8748530 . PMID   35035015 via Springer Link.
  18. "AGU Announces 2012 Fellows". AGU Newsroom.