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It was formed slightly over 66 million years ago when an ... Iridium levels in this layer were as much as 160 times ... over 2,000 papers were published in the 1980s ...
Postglacial Sea level Rise Curve and Meltwater Pulses (MWP) Meltwater pulse 1B (MWP1b) is the name used by Quaternary geologists, paleoclimatologists, and oceanographers for a period of either rapid or just accelerated post-glacial sea level rise that some hypothesize to have occurred between 11,500 and 11,200 calendar years ago at the beginning of the Holocene and after the end of the Younger ...
Graph of total water stored in the Western Cape's largest six dams (blue) as well as City of Cape Town water restriction level (orange) from November 2013 to August 2021. The Cape Town water crisis in South Africa was a multi-year period in 2015–2020 of water shortage in the Western Cape region, most notably affecting the City of Cape Town ...
Exactly ten years after Katrina, J. David Rogers, lead author of a new report in the official journal of the World Water Council, concluded that the flooding during Katrina "could have been prevented had the corps retained an external review board to double-check its flood-wall designs". [170] Other factors may have contributed to the flooding.
The Miocene (/ ˈ m aɪ. ə s iː n,-oʊ-/ MY-ə-seen, -oh-) [6] [7] is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words μείων (meíōn, "less") and καινός (kainós, "new") [8] [9] and means "less recent" because it has 18% fewer modern marine invertebrates ...
Reconstruction of the past 5 million years of climate history, based on oxygen isotope fractionation in deep sea sediment cores (serving as a proxy for the total global mass of glacial ice sheets), fitted to a model of orbital forcing (Lisiecki and Raymo 2005) [2] and to the temperature scale derived from Vostok ice cores following Petit et al. (1999).
The water year begins October 1 to coincide with seasonal Rocky Mountain snowfall, which produces most of the Colorado River's flow. [27] [28] A comparison of Lake Mead water levels from July 2000 to July 2015. Lake Mead's water level rebounded a few feet by October 2015 and avoided triggering the drought restrictions.
A megatsunami does seem possible locally in the distant future as there is geological evidence from past deposits suggesting that a megatsunami occurred with marine material deposited 41 to 188 metres (135 to 617 ft) above sea level between 32,000 and 1.75 million years ago. [94] This seems to have been local to Gran Canaria.