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Categories: Geoscience: Landslides, Paleontology: Dinosaurs

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Paleontology: Dinosaurs
Published

Low volcanic temperature ushered in global cooling and the thriving of dinosaurs      (via sciencedaily.com) 

Dinosaurs came to flourish during the Jurassic period after a volcanic eruption roughly 201 millions years ago wiped out many marine and land animals, leaving them able to evolve and grow. Now, further details about this eruption and the mass extinction have been revealed. A group of researchers demonstrated how low temperature magma slowly heated sedimentary rocks, causing high sulfur dioxide and low carbon dioxide emissions, a process which cooled the earth.

Geoscience: Landslides
Published

New study improves understanding of Southern California’s intense winter rains      (via sciencedaily.com) 

New research looks to improve prediction of brief but intense rainstorms that can cause devastating flash floods and landslides. Intense rain associated with narrow cold-frontal rainbands may last only a few minutes at a particular location, yet the rain can cause catastrophic flash flooding, debris flows and landslides, and can occur along with tornadoes and severe thunderstorms.

Paleontology: Dinosaurs
Published

Muscular study provides new information about how the largest dinosaurs moved and evolved      (via sciencedaily.com) 

New research has revealed how giant 50-ton sauropod dinosaurs, like Diplodocus, evolved from much smaller ancestors, like the wolf-sized Thecodontosaurus.

Geoscience: Landslides Geoscience: Volcanoes
Published

Powerful volcanic blast not the cause for 2018 Indonesian island collapse      (via sciencedaily.com) 

The dramatic collapse of Indonesia's Anak Krakatau volcano in December 2018 resulted from long-term destabilising processes, and was not triggered by any distinct changes in the magmatic system that could have been detected by current monitoring techniques, new research has found.

Paleontology: Dinosaurs
Published

Within a dinosaur’s head: Ankylosaur was sluggish and deaf      (via sciencedaily.com) 

Scientists took a closer look at the braincase of a dinosaur from Austria. The group examined the fossil with a micro-CT and found surprising new details: it was sluggish and deaf.

Paleontology: Dinosaurs
Published

Earth's first giant      (via sciencedaily.com) 

The two-meter skull of an enormous new ichthyosaur species, Earth's first known giant creature, reveals how both the extinct marine reptiles and modern whales became giants.

Paleontology: Dinosaurs Paleontology: Early Mammals and Birds
Published

New insights into the timeline of mammal evolution      (via sciencedaily.com) 

A new study has provided the most detailed timeline of mammal evolution to date.

Paleontology: Dinosaurs Paleontology: Early Mammals and Birds
Published

Exquisitely preserved embryo found inside fossilized dinosaur egg      (via sciencedaily.com) 

A 72 to 66-million-year-old embryo found inside a fossilized dinosaur egg sheds new light on the link between the behavior of modern birds and dinosaurs, according to a new study.

Paleontology: Dinosaurs
Published

An ancient relative of Velociraptor is unearthed in Great Britain      (via sciencedaily.com)     Original source 

A new bird-like dinosaur that used brute strength to overcome its prey has been found by palaeontologists combing through fossils found on the Isle of Wight, on the South Coast of Great Britain.

Paleontology: Dinosaurs Paleontology: Early Mammals and Birds
Published

Sauropod dinosaurs were restricted to warmer regions of Earth      (via sciencedaily.com)     Original source 

A study investigated the enigma of why sauropod fossils are only found at lower latitudes, while fossils of other main dinosaur types seem ubiquitously present, with many located in the polar regions.

Geoscience: Landslides
Published

Forests offer minimal protection against major flood events      (via sciencedaily.com) 

New research examining whether forests can mitigate flood risk suggests they may offer less protection against major events than had been hoped. Although the work, which was carried out in forest sites in Ireland and the UK, showed forests can suppress small storm flows it also underlined that they are likely to make minimal difference in reducing the devastating impacts of major flood events.

Geoscience: Landslides
Published

Climate uncertainty colors flood risk assessment      (via sciencedaily.com) 

Understanding how climate change will affect the flooding of rivers may become easier with a new framework for assessing flood risk that's been developed by an interdisciplinary team.

Geoscience: Landslides
Published

Rivers play key role in destructive coastal flooding, new research shows      (via sciencedaily.com) 

Rising oceans get more attention in climate change discussions, but rivers are rising, too, according to new research. The research shows that rivers need more attention in policy management and disaster preparation, both at the coast and farther inland.

Geoscience: Landslides
Published

Earthquakes and extreme rainfall lead to a significant increase in the rates of landslides in Nepal      (via sciencedaily.com) 

Researchers outline how they were able to establish a clear pattern between the strength of the monsoon season in Nepal and the amount of landsliding over a 30-year period between 1988 and 2018.

Geoscience: Landslides
Published

Urban areas more likely to have precipitation-triggered landslides, exposing growing populations to slide hazards      (via sciencedaily.com) 

Urban areas may be at greater risk for precipitation-triggered landslides than rural areas, according to a new study that could help improve landslide predictions and hazard and risk assessments. Researchers found that urban landslide hazard was up to 10 times more sensitive to variations in precipitation than in rural areas.

Geoscience: Landslides
Published

Evacuation during and after the 2018 Montecito debris flow      (via sciencedaily.com) 

A new study speaks to the importance of public awareness programs in keeping residents -- and emergency management offices -- informed about rare but potentially lethal natural events in their area.

Geoscience: Landslides
Published

Seismic forensics and its importance for early warning      (via sciencedaily.com) 

The catastrophic rockslide of February 7, 2021, in India's Dhauli Ganga Valley and the subsequent flood killed at least a hundred people and destroyed two hydroelectric power plants. Researchers traced the disaster minute by minute using data from a network of seismometers. The team posits that seismic networks could be used to establish an early warning system for high mountain regions.

Geoscience: Landslides
Published

Landslide disaster risk in the Kivu Rift is linked to deforestation and population growth      (via sciencedaily.com) 

New research shows how deforestation and population growth have greatly impacted landslide risk in the Kivu Rift. This is what researchers established from an analysis of six decades of forest cover and population trends in the region.

Geoscience: Landslides
Published

Sea-level rise may worsen existing San Francisco Bay Area inequities      (via sciencedaily.com) 

Researchers examined the number of households unable to pay for damages from coastal flooding to reveal how sea-level rise could threaten the fabric of Bay Area communities over the next 40 years.

Geoscience: Landslides
Published

Coastal wetlands are nature's flood defenses      (via sciencedaily.com) 

Coastal wetlands -- such as salt marshes -- provide even more flood protection than previously thought, reducing risks to lives and homes in estuaries, a new study reveals. Research showed that wetlands that grow in estuaries can reduce water levels by up to 2 meters and provide protection far inland.