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Even small disturbances can trigger catastrophic hurricanes, researchers find（图）
small disturbances trigge catastrophic hurricanes researchers find
2020/5/29
In a developing hurricane, satellite images show thick white clouds clumping together, arms spinning around a central eye as it heads for the coast.Florida State University researchers have found...
Selective sampling during catastrophic disruption:Mapping the location of reaccumulated fragments in the original parent body
Asteroids Collisions Internal structure Gravitational reaccumulations
2015/12/25
In this paper, we simulate numerically the catastrophic disruption of a large asteroid as a result of a collision with a smaller projectile and the subsequent reaccumulation of fragments as a result o...
ROTATION-DEPENDENT CATASTROPHIC DISRUPTION OF GRAVITATIONAL AGGREGATES
minor planets asteroids:general planets and satellites:formation planets and satellites:physical evolution
2015/12/25
We carry out a systematic exploration of the effect of pre-impact rotation on the outcomes of low-speed collisions between planetesimals modeled as gravitational aggregates. We use pkdgrav, a cosmolog...
Fragment properties at the catastrophic disruption threshold:The effect of the parent body’s internal structure
Asteroids Collisional physics Asteroids, Composition
2015/12/25
Numerical simulations of asteroid breakups, including both the fragmentation of the parent body and the gravitational interactions between the fragments, have allowed us to reproduce successfully the ...
Catastrophic disruption of asteroids and family formation:a review of numerical simulations including both fragmentation and gravitational reaccumulations
Asteroids composition Asteroids dynamics Collisional physics Impact processes
2015/12/25
In the last few years, thanks to the development of sophisticated numerical codes, a major breakthrough has been achieved in our understanding of the processes involved in small bodycollisions. In thi...
Catastrophic disruption of pre-shattered parent bodies
Asteroids composition Asteroids dynamics Collisional physics Impact processes
2015/12/25
In this paper, we analyze the effect of the internal structure of a parent body on its fragment properties following its disruption in different impact energy regimes. To simulate an asteroid breakup,...
Formation of Asteroid Families by Catastrophic Disruption:Simulations with Fragmentation and Gravitational Reaccumulation
asteroids dynamics planetesimals resonances surfaces asteroids
2015/12/25
This paper builds on preliminary work in which numerical simulations of the collisional disruption of large asteroids (represented by the Eunomia and Koronis family parent bodies) were performed and w...
Chandler wobble excitation by catastrophic flooding of the Black Sea
Chandler wobble Black Sea
2015/10/8
It is now widely accepted that during the late Quaternary glaciation the Black Sea formed an isolated inland lake (Ross et al., 1970). New geological data and the recognition of sudden population move...
Fruits of the forest gone: Overhunting of large animals has catastrophic effects on trees（图）
Overhunting large animals catastrophic effects trees
2014/12/1
The elephant has long been an important spiritual, cultural and national symbol in Thailand. At the beginning of the 20th century, its numbers exceeded 100,000.
Catastrophic quenching in alpha-Omega dynamos revisited
Catastrophic quenching alpha-Omega revisited
2011/9/27
At large magnetic Reynolds numbers, magnetic helicity evolution plays an important role in astrophysical large-scale dynamos. The recognition of this fact led to the development of the dynamical alpha...
Research on the Cusp-Catastrophic of the Stability of the Red Beds Landslide in Western Yunnan
Catastrophe Instability Model Firs Drought and Post-Floods Pore Water Pressure Red Layer of the Landslide
2011/12/20
The research is for the firs floods and the post-drought in Yunnan area in 2010. The strong rainfall and the hole pressure change are the red rock landslide most essential factor, so an apex post-modu...
Investigation of recent catastrophic landslides in the flysch belt of Outer Western Carpathians (Czech Republic):progress towards better hazard assessment
recent catastrophic landslides flysch belt Outer Western Carpathians better hazard assessment
2009/12/16
Rapid snow melting and intense precipitation triggered and reactivated tens of mostly shallow landslides in the eastern part of the Czech Republic at the turn of March and April 2006. This area is bui...
A basic reason for our interest in complexity is the striking similarity in behaviour close to irreversible phase transitions among systems that are otherwise quite different in nature. It is by now r...
Investigation of recent catastrophic landslides in the flysch belt of Outer Western Carpathians (Czech Republic):progress towards better hazard assessment
catastrophic landslides flysch belt Outer Western Carpathians hazard assessment
2009/12/8
Rapid snow melting and intense precipitation triggered and reactivated tens of mostly shallow landslides in the eastern part of the Czech Republic at the turn of March and April 2006. This area is bui...
Assessing ecological responses to catastrophic amphibian declines: Patterns of macroinvertebrate production and food web structure in upland Panamanian streams
Assessing ecological responses catastrophic amphibian declines
2014/4/17
As part of the Tropical Amphibian Declines in Streams (TADS) project, we estimated macroinvertebrate
production and constructed quantitative food webs for four headwater stream reaches in the Panaman...