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The collapse of the Hittite Empire in the Late Bronze Age has been blamed on various factors, from war with other territories to internal strife. Now, an interdisciplinary collaboration used tree ring...
Collapse of Northern California kelp forests will be hard to reverse（图）
Collapse Northern California kelp forests hard to reverse
2021/3/19
Satellite imagery shows that the area covered by kelp forests off the coast of Northern California has dropped by more than 95%, with just a few small, isolated patches of the bull kelp remaining. Spe...
Mississippi Delta marshes in a state of irreversible collapse, study shows（图）
Mississippi Delta marshes state irreversible collapse
2020/6/5
Given the present-day rate of global sea level rise, remaining marshes in the Mississippi Delta are likely to drown, according to a new Tulane University study.
A key finding of the Na...
Study reveals how collapse of protein processes is driver of aging and death（图）
Study reveals collapse protein processes driver aging and death
2019/10/28
Cells undergo natural aging and death, processes that impact a multitude of cellular factors. A new Stony Brook University-led study published in Proceedings of the National Academy of Sciences (PNAS)...
Collapse of desert bird populations likely due to heat stress from climate change（图）
Collapse bird populations due heat stress climate change
2019/10/17
As temperatures rise, desert birds need more water to cool off. At the same time, deserts are becoming drier, setting some species up for a severe crash, if not extinction, according to a new study pu...
Gemini Tracks Collapse of Io's Atmosphere During Frigid Eclipses
Gemini Collapse Io's Atmosphere Frigid Eclipses
2016/8/11
A Southwest Research Institute-led team has documented atmospheric changes on Io, Jupiter’s volcanically active satellite, as the giant planet casts its shadow over the moon’s surface during daily ecl...
Spanish missions triggered Native American population collapse,indirect impact on climate
Spanish missions Native American population collapse climate
2016/2/22
New interdisciplinary research in the Southwest United States has resolved long-standing debates on the timing and magnitude of American Indian population collapse in the region.The severe and rapid c...
FORMATION OF KUIPER BELT BINARIES BY GRAVITATIONAL COLLAPSE
Kuiper Belt general – planets and satellites formation – protoplanetary disks
2015/12/25
A large fraction of {approx}100 km class low-inclination objects in the classical Kuiper Belt (KB) are binaries with comparable masses and a wide separation of components. A favored model for their fo...
Collapse modes of structures under strong motions of earthquake
collapse mode damage concentration P-d effect flexible-stiff mixed structure
2015/9/25
Under strong motion earthquakes, structures receive various types of damage. The most fatal damage is the loss of lateral strengths of a structure. The loss of lateral resistance causes a total collap...
Salt marshes are among the most productive ecosystems on Earth, providing nurseries for fish species and shelter and food for endangered birds. Salt marshes also mitigate the impacts of hurricanes and...
A SIMPLE MODEL FOR ASSET PRICE BUBBLE FORMATION AND COLLAPSE
ASSET PRICE BUBBLE FORMATION COLLAPSE
2015/7/14
We consider a simple stochastic differential equation for modeling bubbles in social context. A prime example is bubbles in asset pricing, but similar mechanisms may control a range of social phenomen...
New developments in the analysis of column-collapse pyroclastic density currents through numerical simulations of multiphase flows
column-collapse pyroclastic density currents numerical simulations of multiphase flows
2015/1/4
A granular multiphase model has been used to evaluate the action of differently sized particles on the dynamics of fountains and associated pyroclastic density currents. The model takes into account t...
New developments in the analysis of column-collapse pyroclastic density currents through numerical simulations of multiphase flows
column-collapse pyroclastic density multiphase fl ows
2015/1/4
A granular multiphase model has been used to
evaluate the action of differently sized particles on the dynamics of fountains and associated pyroclastic density currents.
Dipole Collapse and Dynamo Waves in Global Direct Numerical Simulations
Dipole Collapse Dynamo Waves Global Direct Numerical Simulations
2012/2/23
Magnetic fields of low-mass stars and planets are thought to originate from self-excited dynamo action in their convective interiors. Observations reveal a variety of field topologies ranging from lar...
Dynamic Collapse of Honeycombs under In-plane Compressions
cellular materials circular honeycombs in-plane compression dynamic collapse mode critical velocity
2012/9/24
Based on our experimental and numerical studies, the present paper mainly describes our findings in the quasi-static and dynamic collapse of honeycombs under in-plane compression. In quasi-static expe...