Results 61 to 70 of about 363 (168)

New Drain Spacing Formulas Using the Variational Iteration Method

Irrigation and Drainage, Volume 75, Issue 3, Page 1287-1297, July 2026.
ABSTRACT In this study, the drain spacing is computed using the variational iteration method (VIM) to the linearized Boussinesq equation. By applying at most two iterations of the VIM method under three different initial condition scenarios, three equations for drain spacing calculation were derived. These equations predict values of drain spacing that
George Kargas, Leonidas Mindrinos, Paraskevi Londra   +2 more
wiley   +1 more source

Cretaceous Spatiotemporal Variations in Tectonic Shortening Directions in the Longmen Shan Tectonic Belt and Geodynamic Implications: Constraints From AMS Fabrics and Crustal Rotation in the Western Sichuan Basin

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract As a major tectonic boundary along the eastern margin of the Tibetan Plateau, the Longmen Shan tectonic belt (LMSTB) underwent pronounced crustal shortening and thickening during the Cretaceous. However, the spatiotemporal evolution of Cretaceous shortening and the boundary's response to far‐field tectonic forcing remain incompletely resolved.
Lifu Hou, Lilin Lan, Zaizheng Zhou, Yuhang Cai, Qiwen Zhong, Fujun Liu, Zhen Yu, Yabo Tong, Junling Pei   +8 more
wiley   +1 more source

Validation of the Computational ANSYS -CFX code for Free Surface Flow: Skimming Flow over Non-Uniform Step Size Stepped Spillways

Zanco Journal of Pure and Applied Sciences, 2019
DOI: https://doi.org/ Keywords: Abstract Stepped cascades have obtained much attentiveness by engineers in hydraulic field from multiple sides as its high production in losing energy and simplicity of construction, mostly after spreading of RCC in ...
Shawnm Mudhafar Saleh, Sarhang M. Husain
doaj   +1 more source

Timing of the Albano‐Hellenic Paleomagnetic Rotation

Tectonics, Volume 45, Issue 7, July 2026.
Abstract The Aegean arc is the most prominent Mediterranean salient, characterized by significant paleomagnetic rotations along its limbs. Although it is well‐established that the external Ionian and Kruja zones of the Albano‐Hellenides underwent a ∼40° post‐Oligocene clockwise (CW) rotation relative to Africa/Adria, the rotation timing remains debated.
F. Feriozzi, F. Speranza, G. Siravo, P. Cipollari, L. Spagnuolo   +4 more
wiley   +1 more source

Flow Pattern and Energy Dissipation in Stepped Spillways With Non-Uniform Step Height Using the ANSYS CFX Software [PDF]

مهندسی منابع آب, 2014
The use of stepped spillways has been increasingly on the rise due to their low cost and high efficiency. Hence, growing attention has been paid to the studies in this field by dam engineers; however, most of these studies have focused on the stepped ...
h. e, m. m
doaj  

Interface Deformation, Exhumation, and Underplating: The Role of Plate Velocity Changes Throughout the Evolution of a Subduction Zone

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Exhumed metamorphic rocks yield critical insights into the mechanical, chemical, and thermal structure of the plate interface that can be used to infer exhumation pathways and their evolution throughout a subduction zone's lifetime. Metamorphosed oceanic rocks often record exhumation and underplating over relatively punctuated time periods ...
Valeria Turino, Adam F. Holt, Derek J. Neuharth, Ryan K. Stoner, Whitney M. Behr   +4 more
wiley   +1 more source

Quaternary Glacial Erosion of the Hohe Tauern, Eastern European Alps: Assessing the Resolution Potential of Low‐Temperature Thermochronology

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Low‐temperature thermochronology records rock cooling, which results from (generally erosion‐driven) exhumation and/or other processes that alter the geotherm. Apatite (U‐Th)/He (AHe) thermochronology can record landscape changes associated with km‐scale erosion and has previously been used to assess Quaternary glacial incision in large ...
I. M. Wapenhans, P. A. van der Beek, M. Bernard, C. Colleps, L. Gong, A. Mariotti, E. Sobel, J. Amalberti, J. Glodny, J. Stammeier   +9 more
wiley   +1 more source

Influences of sedimentation on overflow properties of sharp-crested weir

International Journal of Sediment Research
A sharp-crested weir is the simplest type of weir and is mainly used for discharge measurement in open channels. The surface profile of an ogee weir also is designed based on the lower nappe profile of the free jet passing over a sharp-crested weir.
Mohammad Mehdi Farzanmehr, Jahanshir Mohammadzadeh-Habili   +1 more
doaj   +1 more source

New Terrestrial Native Iron Discovered on Earth's Surface

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Native iron is a major common mineral in lunar samples and meteorites but rarely occurs on Earth's surface, as its stability requires highly reducing conditions with very low oxygen fugacity. To date, native iron has mainly been found in basalts, ophiolites, and deep hydrothermal systems.
Tingwei Zhang, Shuhui Cai, Zhipeng Zeng, Youqian Li, Shixia Yang, Chenglong Deng   +5 more
wiley   +1 more source

Hydrochemical characteristic and karst development in typical karst spring area, Northern China

Frontiers in Environmental Science
Karst aquifer is controlled by complex tectonics. While the tectonic effects and its relationship with chemical evolution in large-scale karst areas are always be neglected.
Qiao Xiaojuan, Qiao Xiaojuan, Li Baoling, Liu Kai, Chai Xinyu, Yu Wenjin   +5 more
doaj   +1 more source