Results 51 to 60 of about 29,646 (296)

Effect of quadric shear basic zonal flows and topography on baroclinic instability

Tellus: Series A, Dynamic Meteorology and Oceanography, 2020
On the β plane approximation, the two-layer quasigeostrophic mode is used to study the baroclinic instability of the quadric shear basic zonal flows on a uniform bottom topography. The phase speed and growth rate of instability waves are functions of the
Xiujie Zhang, Hongxin Zhang, Yuying Yang, Jian Song   +3 more
doaj   +1 more source

Incorporating the effects of topographic amplification in the analysis of earthquake-induced landslide hazards using logistic regression [PDF]

Natural Hazards and Earth System Sciences, 2010
Seismic-induced landslide hazards are studied using seismic shaking intensity based on the topographic amplification effect. The estimation of the topographic effect includes the theoretical topographic amplification factors and the corresponding ...
S. T. Lee, T. T. Yu, W. F. Peng, C. L. Wang   +3 more
doaj   +1 more source

On the origin and pathway of the saline inflow to the Nordic Seas: insights from models [PDF]

, 2001
The behaviours of three high-resolution ocean circulation models of the North Atlantic, differing chiefly in their description of the vertical coordinate, are investigated in order to elucidate the routes and mechanisms by which saline water masses of ...
Herrmann, P., J.-M. Molines, Molines, J.-M., P. Herrmann, Barnard, S., A.L. New, New, A.L., S. Barnard   +7 more
core   +1 more source

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source

Vegetation differentiation characteristics and control mechanisms in the Altay region based on topographic gradients

Ecological Indicators
Among numerous vegetation studies, there are few studies on the elevation gradient distribution control mechanism and horizontal law of small-scale vegetation. In the same climate zone, topography is one of the most important factors affecting vegetation
Baixue Wang, Weiming Cheng, Hua Xu, Ruibo Wang, Keyu Song, Anming Bao, Qingdong Shi   +6 more
doaj   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Soil Sequence at Western Slope of Lawu Volcano

Forum Geografi, 2004
The objectives of this  study was sto know the soil sequence according to topographic position on west part of Lawu volcano. Interpretation of topographic map and landsat image, making topographic cross section from upper slope, lower slope to fluvio ...
Jamulya Jamulya
doaj  

Modelling shallow landslides: the importance of hydrological controls and lateral reinforcement [PDF]

, 2008
Shallow landslides are important as geomorphic agents of erosion, sources of catchment sediment and potential hazards to life and infrastructure. The importance of these mass movements is difficult to define using solely field- based approaches because ...
Milledge, David Graham
core  

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer, Lukas Spano, Sebastian Pohl, Carolin Körner, Matthias Markl   +4 more
wiley   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source