Michael R. Rampino | |
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Born | U.S.A. |
Education | Columbia University (PhD Geological Science) Hunter College CUNY, (BA Magna Cum Laude, Honors in Geology) |
Scientific career | |
Fields | |
Institutions | |
Website | M.R.Rampino NYU website |
Michael R. Rampino is a Geologist and Professor of Biology and Environmental Studies at New York University, [1] 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." [2] [3] These ~30 million year cyclical breaks are an important factor in evolutionary theory, [4] [5] 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," [6] He is also a research consultant at NASA's Goddard Institute for Space Studies (GISS) in New York City. [7]
Rampino's research has been concentrated in several areas including: studies of climate change on various timescales; the products and dynamics of volcanic eruptions and their effects on the global environment; [8] [9] and the relationship of large asteroid and comet impacts, [10] [11] and massive flood-basalt volcanism, [12] with mass extinctions of life.
His most recent work has sought a connection between geologic events and astronomical processes, including encounters of Earth with dark matter in the Galaxy. [13]
Rampino's interest in Astrobiology is evidenced by the text, “Origins of Life in the Universe”, [14] co-authored with Robert Jastrow (Cambridge University Press, 2008), and a new book, “Cataclysms: A New Geology for the 21st Century” [15] (Columbia University Press, 2017).
Rampino received his B.A. from Hunter College of CUNY and a Ph.D. in geological sciences from Columbia University. [16] He was a post-doc at the NASA, Goddard Institute for Space Studies in New York City and Lamont–Doherty Earth Observatory in Palisades, New York studying climate change. He was an Associate Research Scientist at the NASA, Goddard Institute for 5 years, studying the effects of volcanic eruptions on climate, before taking up his present position at NYU. [17]
At New York University, Rampino teaches the popular astrobiology course, “Earth, Life & Time” on the evolution of the Universe. He won an NYU "Golden Dozen” teaching award in 2011. He was instrumental in convening three American Geophysical Union Chapman Conferences on “Volcanoes and Climate” in 1992 (Hilo, Hawaii), 2002 (Santorini, Greece) and 2012 (Selfoss, Iceland) and two international meetings on “Small Bodies in the Solar System” in Mariehamn, Sweden (1994) and in Hikon, Japan (1997). He has been a visiting professor at Tohoku University and Yamaguchi University in Japan, the University of Florence and University of Urbino in Italy, and the University of Vienna in Austria and a lecturer for the annual Urbino Summer School in Paleoclimatology.
Rampino's research has been funded by NASA, the United States Department of Energy, the American Philosophical Society, and the National Science Foundation.
Rampino has been interested in climatic changes on time scales ranging from decades to hundreds of millions of years (Paleoclimatology). Early work centered on multi-year climate cooling after explosive volcanic eruptions, [18] [19] the post-glacial rise in sea level over the last 10,000 years, [20] and glacial/interglacial climate and sea level over the last 150,000 years. [21] [22] In papers with Ken Caldeira at the Carnegie Institution, he explored the relationships of seafloor-spreading rates, atmospheric CO2 and climate in the very warm mid-Cretaceous Period 100 million years ago. They also considered the so-called “Goldilocks Problem” of Earth's habitability. [23] [24] More recent research is focused on the effects of flood-basalt volcanism and asteroid/comet impacts on climate and biological evolution. [25] [26] [27] [28] [29] Rampino proposed the radical idea that some “glacial” deposits in the geologic record are actually impact-related debris flows. [30]
Rampino has investigated the climatic and environmental effects of stratospheric aerosol clouds produced by explosive volcanic eruptions. [31] With his colleagues Stephen Self, now at UC Berkeley and Richard Stothers of the Goddard Institute for Space Studies he studied the volcanic production of atmospheric sulfate aerosols using volcanological measurements of magmatic sulfur release, [32] observations of volcanic aerosol clouds, and the record of atmospheric phenomena and climate changes after volcanic eruptions from historical accounts (including the ancient literature), [33] [34] and from the record of volcanism contained in polar ice cores [35] [36]
These studies included detailed field investigations of the historic 1883 eruption of Krakatoa, the 1963 eruption of Mount Agung and the 1815 eruption of Mount Tambora in Indonesia, and their climatic aftermath. [37] The famous “year without a summer” in 1816, during which Mary Shelley was forced to stay indoors to write Frankenstein , followed the great Tambora eruption. [38] One focus of investigation is the huge “supereruption” (a word coined by Rampino and Self) of Mount Toba (now Lake Toba) in Sumatra ~74,000 years ago. [39] This event may have created a severe “volcanic winter” (another term coined by Rampino) leading to a human population crash predicted from studies of the human genome. [40] Such large eruptions threaten civilization. [41] [42]
Rampino became interested in the catastrophic effects of asteroids and comet impacts when it was discovered that the Chicxulub asteroid impact event (66 million years ago) had created the huge Chicxulub crater in Mexico, and led to the extinction of many forms of life, including the dinosaurs. Rampino has studied the globally distributed evidence for the Chicxulub impact with fieldwork in Europe, the western United States, Mexico and the Caribbean. [43] After a periodic 26-million year cycle was proposed for mass extinctions of life in 1984, [44] Rampino and Stothers reported a similar cycle in the ages of impact craters on the Earth. [45] [46] To explain the cycles, they proposed the “Shiva Hypothesis” in which the 30-million year oscillation of the Solar System through the dense Galactic plane leads to periodic comet showers on Earth. [47] [48]
More recent work has centered on the severe Permian–Triassic extinction event (252 million years ago), with fieldwork in South Africa, Hungary, Japan, India and China, particularly focused on the so-called “fungal event” marking the devastation of Late Permian vegetation. [49] [50] Rampino and colleagues found evidence that the mass extinction of 96% of marine species and much of life on land may have occurred in a brief period of only a few thousand years, suggesting some sort of cataclysm [51] It turns out that this extinction occurred at the same time as the massive eruption of the Siberian Flood basalts. In 2017, Rampino and colleagues, studying the record of the great extinction, discovered a coincident worldwide layer rich in nickel that had been released by emanations from the huge eruptions. [52] He and Caldeira concluded that most of the mass extinctions in the last 260 million years seem to have been associated with environmental catastrophes caused by either large impacts or flood-basalt eruptions. [53]
In 2017–18, Rampino contributed popular articles on mass extinctions, impacts and the Galaxy to American Scientist and Astronomy Magazines.
In 1993, Rampino and Caldeira reported a ubiquitous 26-million year cycle in geologic plate tectonic and volcanic activity. [54] [55] More recently, Rampino related this cycle to the Solar System's oscillation through the plane of the Milky Way Galaxy, which has a similar period. He attributes the Earth's internal-activity cycle to the planet's encounters with clumps of mysterious dark matter in the Galactic plane. [56] Astrophysicists suggested that the dark matter particles can become trapped within the Earth where they self-destruct, releasing large amounts of heat and leading to periodic pulses in the planet's internal geologic activity. Thus, geologic activity on the Earth may be modulated by astrophysical circumstances. [57]
Rampino has appeared in many documentaries produced by PBS NOVA (Mystery of the Mega-Volcano, and Volcano!), BBC Horizon (Under the Volcano), the Discovery Channel (Three Minutes to Impact; Amazing Earth), the National Geographic Channel (Earth-Staying Alive), the History Channel (Story of Moses and the Plagues of Egypt), Japanese TV (Space and Life) and has appeared on local and national news programs (ABC, CBS, NBC, CNN, PBS, Fox News, and others). He is listed in the Internet Movie Data Base (IMDb) [58] for appearances in Supervolcanoes (2000); [59] Mystery of the Minoans (2001); [60] The Day The Earth Nearly Died (2002); [61] Last Days of Earth (2006); [62] Inside the Volcano (2006); [63] Krakatoa (2008); [64] Super Volcano: Yellowstone's Fury (2013); [65] Doomsday Volcanoes (2013); [66] What on Earth? (2015); [67] The Dark Matter Enigma (2017); [68] and X-Ray Earth: Volcanic Cataclysms (2020). [69]
Rampino has published two books, a text for a course on Astrobiology (Jastrow and Rampino, 2008) and a popular portrayal of the effects of catastrophic events on Earth history and the history of life (Rampino, 2017). He was co-editor of the conference volume “Climate: History, Periodicity and Predictability” published in 1987.
The Deccan Traps are a large igneous province of west-central India. They are one of the largest volcanic features on Earth, taking the form of a large shield volcano. They consist of many layers of solidified flood basalt that together are more than about 2,000 metres (6,600 ft) thick, cover an area of about 500,000 square kilometres (200,000 sq mi), and have a volume of about 1,000,000 cubic kilometres (200,000 cu mi). Originally, the Deccan Traps may have covered about 1,500,000 square kilometres (600,000 sq mi), with a correspondingly larger original volume. This volume overlies the Archean age Indian Shield, which is likely the lithology the province passed through during eruption. The province is commonly divided into four subprovinces: the main Deccan, the Malwa Plateau, the Mandla Lobe, and the Saurashtran Plateau.
An extinction event is a widespread and rapid decrease in the biodiversity on Earth. Such an event is identified by a sharp fall in the diversity and abundance of multicellular organisms. It occurs when the rate of extinction increases with respect to the background extinction rate and the rate of speciation. Estimates of the number of major mass extinctions in the last 540 million years range from as few as five to more than twenty. These differences stem from disagreement as to what constitutes a "major" extinction event, and the data chosen to measure past diversity.
Approximately 251.9 million years ago, the Permian–Triassicextinction event forms the boundary between the Permian and Triassic geologic periods, and with them the Paleozoic and Mesozoic eras. It is Earth's most severe known extinction event, with the extinction of 57% of biological families, 83% of genera, 81% of marine species and 70% of terrestrial vertebrate species. It is also the greatest known mass extinction of insects. It is the greatest of the "Big Five" mass extinctions of the Phanerozoic. There is evidence for one to three distinct pulses, or phases, of extinction.
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.
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.
The volcanic winter of 536 was the most severe and protracted episode of climatic cooling in the Northern Hemisphere in the last 2,000 years. The volcanic winter was caused by at least three simultaneous eruptions of uncertain origin, with several possible locations proposed in various continents. Most contemporary accounts of the volcanic winter are from authors in Constantinople, the capital of the Eastern Roman Empire, although the impact of the cooler temperatures extended beyond Europe. Modern scholarship has determined that in early CE 536, an eruption ejected massive amounts of sulfate aerosols into the atmosphere, which reduced the solar radiation reaching the Earth's surface and cooled the atmosphere for several years. In March 536, Constantinople began experiencing darkened skies and lower temperatures.
A volcanic winter is a reduction in global temperatures caused by droplets of sulfuric acid obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large, sulfur-rich, particularly explosive volcanic eruption. Climate effects are primarily dependent upon the amount of injection of SO2 and H2S into the stratosphere where they react with OH and H2O to form H2SO4 on a timescale of a week, and the resulting H2SO4 aerosols produce the dominant radiative effect. Volcanic stratospheric aerosols cool the surface by reflecting solar radiation and warm the stratosphere by absorbing terrestrial radiation for several years. Moreover, the cooling trend can be further extended by atmosphere–ice–ocean feedback mechanisms. These feedbacks can continue to maintain the cool climate long after the volcanic aerosols have dissipated.
A geologic hazard or geohazard is an adverse geologic condition capable of causing widespread damage or loss of property and life. These hazards are geological and environmental conditions and involve long-term or short-term geological processes. Geohazards can be relatively small features, but they can also attain huge dimensions and affect local and regional socio-economics to a large extent.
The Siberian Traps are a large region of volcanic rock, known as a large igneous province, in Siberia, Russia. The massive eruptive event that formed the traps is one of the largest known volcanic events in the last 500 million years.
A flood basalt is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava. Many flood basalts have been attributed to the onset of a hotspot reaching the surface of the Earth via a mantle plume. Flood basalt provinces such as the Deccan Traps of India are often called traps, after the Swedish word trappa, due to the characteristic stairstep geomorphology of many associated landscapes.
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including intrusive and extrusive, arising when magma travels through the crust towards the surface. The formation of LIPs is variously attributed to mantle plumes or to processes associated with divergent plate tectonics. The formation of some of the LIPs in the past 500 million years coincide in time with mass extinctions and rapid climatic changes, which has led to numerous hypotheses about causal relationships. LIPs are fundamentally different from any other currently active volcanoes or volcanic systems.
The Central Atlantic magmatic province (CAMP) is the Earth's largest continental large igneous province, covering an area of roughly 11 million km2. It is composed mainly of basalt that formed before Pangaea broke up in the Mesozoic Era, near the end of the Triassic and the beginning of the Jurassic periods. The subsequent breakup of Pangaea created the Atlantic Ocean, but the massive igneous upwelling provided a legacy of basaltic dikes, sills, and lavas now spread over a vast area around the present central North Atlantic Ocean, including large deposits in northwest Africa, southwest Europe, as well as northeast South America and southeast North America. The name and CAMP acronym were proposed by Andrea Marzoli and adopted at a symposium held at the 1999 Spring Meeting of the American Geophysical Union.
The Shiva hypothesis, also known as coherent catastrophism, is the idea that global natural catastrophes on Earth, such as extinction events, happen at regular intervals because of the periodic motion of the Sun in relation to the Milky Way galaxy.
The Emeishan Traps constitute a flood basalt volcanic province, or large igneous province, in south-western China, centred in Sichuan province. It is sometimes referred to as the Permian Emeishan Large Igneous Province or Emeishan Flood Basalts. Like other volcanic provinces or "traps", the Emeishan Traps are multiple layers of igneous rock laid down by large mantle plume volcanic eruptions. The Emeishan Traps eruptions were serious enough to have global ecological and paleontological impact.
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.
The Capitanian mass extinction event, also known as the end-Guadalupian extinction event, the Guadalupian-Lopingian boundary mass extinction, the pre-Lopingian crisis, or the Middle Permian extinction, was an extinction event that predated the end-Permian extinction event. The mass extinction occurred during a period of decreased species richness and increased extinction rates near the end of the Middle Permian, also known as the Guadalupian epoch. It is often called the end-Guadalupian extinction event because of its initial recognition between the Guadalupian and Lopingian series; however, more refined stratigraphic study suggests that extinction peaks in many taxonomic groups occurred within the Guadalupian, in the latter half of the Capitanian age. The extinction event has been argued to have begun around 262 million years ago with the Late Guadalupian crisis, though its most intense pulse occurred 259 million years ago in what is known as the Guadalupian-Lopingian boundary event.
Asish R. Basu is a geologist, academic, and researcher. He is Professor Emeritus of Earth and Environmental Sciences at the University of Texas at Arlington. He is most known for his research in Earth Science -related subjects, such as isotope geochemistry, flood basalt volcanism, and mineralogy-petrology.
Stephen Self is a British volcanologist, best known for his work on large igneous provinces and on the global impacts of volcanic eruptions.