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Wed, 7 May 2025, 14:00 | BY: VN

The Observatorio Vulcanológico y Sismológico de Costa Rica-Universidad Nacional (OVSICORI-UNA) reported continuous gas-and-steam emissions, ash-and-gas emissions sometimes lasting hours, and explosions at Poás during 30 April-6 May. Inflation continued to be detected. Seismic and infrasound sensors recorded seismic-acoustic signals indicating fluctuating eruptive activity with frequent more intense eruptive pulses.
The webcams recorded the emissions and incandescence at the vents.

During 29-30 April ash-and-gas plumes rose a few hundred meters above the crater rim and drifted SW, causing significant ashfall in the Sarchi area (18 km SW). The density of the ash content was higher in the morning and early afternoon on 30 April. Around 0300 on 1 May a team conducted a drone overflight and measured a temperature of 180 degrees Celsius, indicating no lava near the surface.

A more intense eruptive pulse at 0315 sent ash-and-gas 500

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In-brief analysis

May 7, 2025

Data source: FracFocus
Note: To calculate the number of wells completed per location, we grouped wells within a 50-foot radius into single locations. We then identified wells completed by their completion start and end dates, counting concurrent completions when their completion periods overlapped.

We estimate that the average number of wells completed simultaneously at the same location in the Lower 48 states has more than doubled, increasing from 1.5 wells in December 2014 to more than 3.0 wells in June 2024. By completing multiple wells at once rather than sequentially, operators can accelerate their production timeline and reduce their cost per well. The increasing number of simultaneous completions reflects significant technological advances in hydraulic fracturing operations, particularly in equipment capabilities and operational strategies.

Using data from FracFocus to estimate simultaneous

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Aalto University is where science and art meet technology and business. We shape a sustainable future by making research breakthroughs in and across our disciplines, sparking the game changers of tomorrow and creating novel solutions to major global challenges. Our community is made up of 13 000 students, 400 professors, and more than 4 500 other faculty and staff working on our dynamic campus in Espoo, Greater Helsinki, Finland. Diversity is part of who we are, and we actively work to ensure our community’s diversity and inclusiveness. This is why we warmly encourage qualified candidates from all backgrounds to join our community.

The School of Chemical Engineering is one of the six schools of Aalto University. It combines natural sciences and engineering in a unique way.

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Postdoctoral Researcher in Sustainable Materials and Smart Textiles

We are seeking a

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Researchers supported by the U.S. National Science Foundation have discovered four tiny exoplanets orbiting Barnard’s star, a red dwarf at the center of the nearest single-star system to Earth. Using a specialized instrument mounted on the NSF-supported Gemini North Telescope in Hawaii, the team detected “wobbles” in the motion of Barnard’s star by observing subtle shifts in the color of its light, indicating the gravitational pull from nearby exoplanets. The planets’ surfaces are too hot to support life as we know it.

The researchers made their discovery using the M-dwarf Advanced Radial velocity Observer Of Neighboring eXoplanets (MAROON-X) spectrometer, which is designed to detect exoplanets. Their results were published in The Astrophysical Journal Letters and show promise for finding and confirming more small planets around other red dwarf stars, which are numerous in the universe.

“The U.S. National Science Foundation is collaborating with the astronomy community on an adventure to look deeper into the universe to detect planets with environments that might resemble Earth’s,” says Martin Still, NSF program director for the International Gemini Observatory. “The planet discoveries provided by MAROON-X mounted on Gemini North provide a significant step along that journey.”

Most of the planets previously discovered in the Milky Way galaxy are much larger than Earth, making detecting these relatively tiny planets a fundamental step towards a more complete understanding of planet populations.

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