Showing 20 articles starting at article 161

< Previous 20 articles        Next 20 articles >

Categories: Geoscience: Earthquakes, Mathematics: Puzzles

Return to the site home page

     (via sciencedaily.com) 

Using details from historical newspaper accounts and letters, seismologists have learned more about Haiti's 1860 Jour de Pâques (Easter Sunday) earthquake sequence, and how it might have impacted the country's most recent devastating earthquakes.

     (via sciencedaily.com) 

New research suggests the brain function of otherwise-healthy individuals exposed to event trauma has the ability to 'bounce back' over time once the threat resolves. Researchers conducted a follow-up study on a group of Cantabrians, who had been exposed to trauma during the region's earthquakes over a decade ago.

     (via sciencedaily.com) 

Using a method that works backward from a set of observed earthquakes to test seismic models that fit those observations, researchers working in the Delaware Basin were able to determine whether earthquakes in the region since 2017 were caused by oil and gas operations.

     (via sciencedaily.com) 

Scientists have found evidence that the Earth's inner core oscillates, contradicting previously accepted models that posited it consistently rotates at a faster rate than the planet's surface.

     (via sciencedaily.com) 

New models that show how the continents were assembled are providing fresh insights into the history of the Earth and will help provide a better understanding of natural hazards like earthquakes and volcanoes.

     (via sciencedaily.com) 

In a 'seismological wind tunnel,' engineers demonstrate the impact of rock gouge -- ground-up rock along a fault boundary -- on earthquake propogation.

     (via sciencedaily.com) 

No one is at their best when they are dehydrated and that goes for tectonic plates too. Researchers using a thermomechanical model of the Alaska subduction zone indicates that plate dehydration is at its highest in the region where low-frequency tremors occur, suggesting that the expelled water contributes towards these seimic events. This improved understanding will contribute to better predictions of future earthquakes.

     (via sciencedaily.com) 

Archaeologists have uncovered a 3400-year-old Mittani Empire-era city once located on the Tigris River. The settlement emerged from the waters of the Mosul reservoir early this year as water levels fell rapidly due to extreme drought in Iraq. The extensive city with a palace and several large buildings could be ancient Zakhiku -- believed to have been an important center in the Mittani Empire (ca. 1550-1350 BC).

     (via sciencedaily.com) 

Lake Cahuilla went through many cycles of filling and drying out over thousands of years. A new study used radiocarbon dating to determine the timing of the last seven periods of filling during the Late Holocene. The research sheds light on both the history of human occupation in the area and its seismic past.

     (via sciencedaily.com) 

The percentage of water in arc volcanoes, which form above subduction zones, may be far more than many previous studies have calculated. This increased amount of water has broad implications for understanding how Earth's lower crust forms, how magma erupts through the crust, and how economically important mineral ore deposits form, according to a new article.

     (via sciencedaily.com) 

USC researchers have found a correlation between tsunami severity and the width of the outer wedge -- the area between the continental shelf and deep trenches where large tsunamis emerge -- that helps explain how underwater seismic events generate large tsunamis.

     (via sciencedaily.com) 

New research examines an unusual pocket of rock at the boundary layer with Earth's core, some three thousand kilometers beneath the surface.

     (via sciencedaily.com) 

Australia has suffered a significant drop in teenage maths proficiency in the past 20 years -- sliding from 11th in the OECD rankings to 29th place out of 38 countries, prompting widespread debate over potential curriculum changes. One researcher says hand gestures could stop the slide.

     (via sciencedaily.com) 

The massive Jan. 15, 2022, eruption of the Hunga submarine volcano in the South Pacific Ocean created a variety of atmospheric wave types, including booms heard 6,200 miles away in Alaska. It also created an atmospheric pulse that caused an unusual tsunami-like disturbance that arrived at Pacific shores sooner than the actual tsunami.

     (via sciencedaily.com) 

Scientists have studied how the screen habits of US children correlates with how their cognitive abilities develop over time. They found that the children who spent an above-average time playing video games increased their intelligence more than the average, while TV watching or social media had neither a positive nor a negative effect.

     (via sciencedaily.com) 

A new method of detecting mega earthquakes, which picks up on the gravity waves they generate by using deep-learning models, can estimate earthquake magnitude in real time and provide earlier warning of tsunamis.

     (via sciencedaily.com) 

In June 2019, a magnitude 4.0 earthquake occurred beneath Lake Erie just off the shoreline of Ohio, about 20 miles northeast of Cleveland.

     (via sciencedaily.com) 

A study of two powerful earthquakes in adjacent areas off the Alaska Peninsula in 2020 and 2021 shows a connection between the two. It also suggests they may be a part of an 80-year rupture cascade along the fault.

     (via sciencedaily.com) 

A new form of security identification could soon see the light of day and help us protect our data from hackers and cybercriminals. Quantum mathematicians have solved a mathematical riddle that allows for a person's geographical location to be used as a personal ID that is secure against even the most advanced cyber attacks.

     (via sciencedaily.com) 

A new method for detecting tsunamis using existing GPS satellites orbiting Earth could serve as an effective warning system for countries worldwide, according to a new study.