Results 91 to 100 of about 16,773 (290)
Disentangling anthropogenic and dynamic contributions to recent ocean warming
npj Climate and Atmospheric ScienceAs the ocean absorbs over 90% of excess radiative heat, recent ocean warming is shaped by a combination of anthropogenic surface heat gain and dynamical processes redistributing heat.
Jiheun Lee +2 more
doaj +1 more source
Scale model test of a semi-active heave compensation system for deep-sea tethered ROVs
, 2016 The deep-sea ROV system is usually equipped with a heave compensation system under harsh sea states, and a semi-active heave compensation system that consists of a passive and an active subsystem is presented, the compensation mechanism of which is ...
Li XH(李晓晖) +4 more
core
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Permafrost in northern peatlands occurs within individual palsas or extensive peat plateaus and controls local carbon storage. These permafrost landforms are complex, and their internal structure remains poorly understood. We used quasi‐3D electrical resistivity tomography (ERT) measurements, supported by UAV‐LiDAR topography, frost probing ...
Cas Renette +5 more
wiley +1 more source
Journal of Glaciology, 2010 AbstractThe deformation of the ground surface that is produced by frost heave has motivated almost a century of concerted laboratory, field and theoretical studies. Well before the development of equipment capable of resolving the microscopic films that support liquid transport towards growing ice lenses, early investigators predicted their occurrence ...
openaire +1 more source
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Freeze–thaw processes cause periglacial creep (otherwise known as solifluction) which forms solifluction lobes. These are lobate features characterized by a steep riser (front) and a smooth tread (body). Despite the widespread occurrence of these lobes, the controls on their morphometry remain poorly understood. Research into solifluction lobe
Jil S. van Etten +2 more
wiley +1 more source
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Understanding fine‐scale surface changes is crucial for quantifying ecosystem dynamics and detecting landscape changes. Palsas, comparably small peatland elevations with an ice‐rich permafrost core, undergo natural cycles of growth and degradation. They can also serve as indicators of climate change in subarctic regions. Because they typically
Alexander Störmer +3 more
wiley +1 more source
Yantu gongcheng xuebaoHorizontal freezing heave induces frost heave pressure in retaining structures, foundation pits, and slopes under various conditions, resulting in a range of engineering challenges.
LIU Yue 1, SHEN Yupeng 1, LIU Zhisheng 2, LUO Chengcheng 1, MENG Zihan 1
doaj +1 more source
, 2016 To improve the safety of the launch and recovery of the deep-sea remotely operated vehicle (ROV) under harsh sea states, the passive heave compensator is usually equipped.
Zhao XF(赵旭峰) +4 more
core
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Pingos and related permafrost mounds are widespread periglacial landforms in Arctic environments that are ice‐rich on the one hand and contain taliks on the other, making them vulnerable to climate change. So far, the interior, geophysical characteristics, and distribution of ground ice within these dome‐ or cone‐shaped features have not been ...
Tim Wiegand +2 more
wiley +1 more source
, 2009 For realizing the yaw-heave coupling control of unmanned helicopters in full flight envelope, an active modeling based controller is developed based on robust model predictive control and adaptive set-membership filter estimation.
Qi JT(齐俊桐) +2 more
core