Results 111 to 120 of about 42,910 (223)

Shockwave overpressure of propellant gases around the mortar [PDF]

Scientific Technical Review, 2016
This paper is a result of many years of research in the field of the powder gases shockwave overpressure, which occurs during firing from the mortar. The cause of these occurrences is a sudden flow of powder gases from the weapon barrel and its expansion
Lisov Miodrag, Jaramaz Slobodan, Kozić Mirko, Ristović Novica   +3 more
doaj  

Preliminary sonic boom correlation of predicted and measured levels for STS-1 entry [PDF]

A preliminary analysis correlating peaks from sonic boom pressure signatures recorded during the descent trajectory of the Orbiter Columbia, which landed in the dry lake bed at Edwards Air Force Base (EAFB), California, with measured wind tunnel ...
Garcia, F., Jr., Henderson, H. R., Jones, J. H., Morrison, K. M.   +3 more
core   +1 more source

Deep overpressure gas accumulation

Chinese Science Bulletin, 2002
The Kela-2 gas field in the Kuqa Depression of the Tarim Basin is one of the greatest fields recently discovered in the deep overpressure reservoir in the world. The play conditions of Kela-2 field and Ya21-1 structure features in the Qiongdongnan Basin on the South China Sea shelf has been studied, and a gas accumulation under deep overpressure must ...
openaire   +1 more source

Small but mighty: Impact hazards from iron Near‐Earth Objects

Meteoritics &Planetary Science, Volume 61, Issue 2, Page 224-240, February 2026.
Abstract Small asteroids can impact Earth unexpectedly, as demonstrated by the Chelyabinsk event in 2013. The warning times are likely to be short, and the first tools for fast hazard predictions have been developed in the last years for encounters with rocky or cometary objects, which quickly fragment in the atmosphere and cause airbursts. However, in
Robert Luther, Natalia Artemieva, Andrea Schmalen, Kai Wünnemann, Detlef Koschny, Richard Moissl   +5 more
wiley   +1 more source

Pressure measurements on real high-speed trains travelling through tunnels [PDF]

, 2008
From November, 2006 to March, 2008 a series of tests were performed onboard a wide variety of trains in order to check their response to pressure waves generated while passing through tunnels.
Gaite Cuesta, José, Martínez Muelas, Alejandro, Meseguer Ruiz, José, Vega Ramiro, Enrique   +3 more
core   +1 more source

Seismic Velocity Variations, Ground Deformation and the Role of Fluids During a Low‐Energy Seismic Swarm

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract On March 9th $9\mathrm{th}$, 2023, three small earthquakes (3.8≤Mw≤4.5) $(3.8\le {M}_{w}\le 4.5)$ occurred near Umbertide (Central Italy), within 4 hours. Analyzing seismic ambient noise in the frequency band 0.1–1 Hz from six seismometers within 20 km of the Mw 4.5, we detect a significant drop in seismic velocity at the time of occurrence of
Eugenio Mandler, Lucia Zaccarelli, Massimo Nespoli, Maria Elina Belardinelli, Francesco Pintori, Enrico Serpelloni, Adriano Gualandi, Lauro Chiaraluce   +7 more
wiley   +1 more source

Genetic mechanism and petroleum geological significance of calcite veins in organic-rich shales of lacustrine basin: A case study of Cretaceous Qingshankou Formation in Songliao Basin, China

Petroleum Exploration and Development
Based on the observation and analysis of cores and thin sections, and combined with cathodoluminescence, laser Raman, fluid inclusions, and in-situ LA-ICP-MS U-Pb dating, the genetic mechanism and petroleum geological significance of calcite veins in ...
Wenyuan HE, Ningliang SUN, Jinyou ZHANG, Jianhua ZHONG, Jianbo GAO, Pengpeng SHENG   +5 more
doaj   +1 more source

Elastocapillary folding of three dimensional micro-structures using water pumped through the wafer via a silicon nitride tube [PDF]

, 2011
In this paper we present the first investigation of a batch method for folding of threedimensional micrometer-sized silicon nitride structures by capillary forces.
Abelmann, L., Berenschot, J.W., Legrain, A., Ma, K., Sanders, R.G.P., Tas, N.R.   +5 more
core   +1 more source

Abnormally Large Magma Flux Does Not Lead to Eruption in Subduction Zone Calderas: The 2022–2023 Episode of Uplift of Aniakchak Crater (Aleutians)

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Observations of ground deformation provide insights on the triggering mechanisms of eruptions. At Aniakchak Crater (Aleutians) InSAR measured ∼ ${\sim} $72 cm of uplift in less than 7 months between 2022 and 2023. The uplift can be explained by the inflation of a point pressure source at a depth of 3.2 km.
Francisco Delgado
wiley   +1 more source

Atmospheric Specifications for Infrasound Studies: 2. The Added Value of a High‐Top Model, UA‐ICON

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 1, 16 January 2026.
Abstract Infrasound monitoring activities that deal with long‐range acoustic propagation, as within the Comprehensive Nuclear‐Test‐Ban Treaty's (CTBT), need accurate and operational modeling of the atmosphere up to the lower thermosphere. Yet, operational meteorological products issued by weather services are topped at around 80 km altitude with a ...
S. Kristoffersen, C. Listowski, R. Wing, S. Khaykin, G. Baumgarten, A. Hauchecorne, A. Le Pichon, J. Vergoz   +7 more
wiley   +1 more source