Large-scale ocean deoxygenation during the Paleocene-Eocene Thermal Maximum
نویسندگان
چکیده
منابع مشابه
Sharply increased insect herbivory during the Paleocene-Eocene Thermal Maximum.
The Paleocene-Eocene Thermal Maximum (PETM, 55.8 Ma), an abrupt global warming event linked to a transient increase in pCO2, was comparable in rate and magnitude to modern anthropogenic climate change. Here we use plant fossils from the Bighorn Basin of Wyoming to document the combined effects of temperature and pCO2 on insect herbivory. We examined 5,062 fossil leaves from five sites positione...
متن کاملRapid acidification of the ocean during the Paleocene-Eocene thermal maximum.
The Paleocene-Eocene thermal maximum (PETM) has been attributed to the rapid release of approximately 2000 x 10(9) metric tons of carbon in the form of methane. In theory, oxidation and ocean absorption of this carbon should have lowered deep-sea pH, thereby triggering a rapid (<10,000-year) shoaling of the calcite compensation depth (CCD), followed by gradual recovery. Here we present geochemi...
متن کاملA continental shelf perspective of ocean acidification and temperature evolution during the Paleocene-Eocene Thermal Maximum
A rapid and large injection of isotopically light carbon into the ocean-atmosphere reservoirs is signaled by a negative carbon isotope excursion (CIE) at the Paleocene-Eocene boundary ~56 m.y. ago. To better understand the extent of ocean warming and acidification associated with the carbon injection we generated elemental and isotopic records of surface and thermocline planktonic foraminifera ...
متن کاملA statistical interpretation of surface ocean temperature trends during the Paleocene-Eocene Thermal Maximum
often considered a geologic analog to the modern, rapid addition of carbon dioxide to the atmosphere. The ability to assess the sensitivity of many rate-dependent climate change impacts, based on the PETM analogy, hinges critically on the PETM warming rate. Current estimates of the PETM warming rate face considerable problems, for example, due to the nontrivial statistical challenges in account...
متن کاملEnhanced terrestrial weathering/runoff and surface ocean carbonate production during the recovery stages of the Paleocene-Eocene thermal maximum
[1] The carbonate saturation profile of the oceans shoaled markedly during a transient global warming event known as the Paleocene-Eocene thermal maximum (PETM) (circa 55 Ma). The rapid release of large quantities of carbon into the ocean-atmosphere system is believed to have triggered this intense episode of dissolution along with a negative carbon isotope excursion (CIE). The brevity (120–220...
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ژورنال
عنوان ژورنال: Science
سال: 2018
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.aar8658