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In order to estimate the seismic vulnerability of a densely populated urban area, it would in principle be necessary to evaluate the dynamic behaviour of individual and aggregate buildings. These detailed seismic analyses, however, are…

Geophysics · Physics 2019-06-14 A. Greco , A. Pluchino , L. Barbarossa , G. Barreca , I. Caliò , F. Martinico , A. Rapisarda

Developing a rapid, but also reliable and efficient, method for classifying the seismic damage potential of buildings constructed in countries with regions of high seismicity is always at the forefront of modern scientific research. Such a…

Machine Learning · Computer Science 2022-05-03 Konstantinos Kostinakis , Konstantinos Morfidis , Konstantinos Demertzis , Lazaros Iliadis

A large disruption in the main asteroid belt can cause a large flux, an "asteroid shower", on the terrestrial planets. We quantitatively examine the hypothesis that such an event was the cause of the lunar late heavy bombardment (LHB). We…

Astrophysics · Physics 2007-05-23 Takashi Ito , Renu Malhotra

Accurate damage prediction is crucial for disaster preparedness and response strategies, particularly given the frequent earthquakes in Turkey. Utilizing datasets on earthquake data, infrastructural quality metrics, and contemporary…

Geophysics · Physics 2024-11-15 Shrey Shah , Alex Lin , Scott Lin , Josh Patel , Michael Lam , Kevin Zhu

We examine the mechanisms by which atmosphere can be eroded by giant impacts onto Earth-like planets with thin atmospheres, using 3D smoothed particle hydrodynamics simulations with sufficient resolution to directly model the fate of…

Earth and Planetary Astrophysics · Physics 2020-07-22 J. A. Kegerreis , V. R. Eke , R. J. Massey , L. F. A. Teodoro

In this paper we define the a posteriori probability W. This quantity is introduced with the aim of suggesting a reliable interpretation of the actual threat posed by a newly discovered Near Earth Asteroid (NEA), for which impacting orbital…

Space Physics · Physics 2007-05-23 Germano D'Abramo

We present a new scaling law to predict the loss of atmosphere from planetary collisions for any speed, angle, impactor mass, target mass, and body compositions, in the regime of giant impacts onto broadly terrestrial planets with…

Earth and Planetary Astrophysics · Physics 2020-10-02 Jacob A. Kegerreis , Vincent R. Eke , David C. Catling , Richard J. Massey , Luis F. A. Teodoro , Kevin J. Zahnle

We present recent improvements of the modeling of the disruption of strength dominated bodies using the Smooth Particle Hydrodynamics (SPH) technique. The improvements include an updated strength model and a friction model, which are…

Earth and Planetary Astrophysics · Physics 2015-02-09 Martin Jutzi

Knowledge of the interior density distribution of an asteroid can reveal its composition and constrain its evolutionary history. However, most asteroid observational techniques are not sensitive to interior properties. We investigate the…

Earth and Planetary Astrophysics · Physics 2022-10-20 Jack T Dinsmore , Julien de Wit

The Asteroid Terrestrial-impact Last Alert System (ATLAS) is an all-sky survey primarily aimed at detecting potentially hazardous near-Earth asteroids. Apart from the astrometry of asteroids, it also produces their photometric measurements…

Earth and Planetary Astrophysics · Physics 2020-11-04 J. Durech , J. Tonry , N. Erasmus , L. Denneau , A. N. Heinze , H. Flewelling , R. Vanco

Global scale impacts modify the physical or thermal state of a substantial fraction of a target asteroid. Specific effects include accretion, family formation, reshaping, mixing and layering, shock and frictional heating, fragmentation,…

Earth and Planetary Astrophysics · Physics 2016-08-31 Erik Asphaug , Gareth Collins , Martin Jutzi

We assess the risk of an Earth impact for asteroid (99942) Apophis by means of a statistical analysis accounting for the uncertainty of both the orbital solution and the Yarkovsky effect. We select those observations with either rigorous…

Earth and Planetary Astrophysics · Physics 2015-06-12 D. Farnocchia , S. R. Chesley , P. W. Chodas , M. Micheli , D. J. Tholen , A. Milani , G. T. Elliott , F. Bernardi

With the development of technological progress, mining on asteroids is becoming a reality. This paper focuses on how to distribute asteroid mineral resources in a reasonable way to ensure global equity. To distribute asteroid resources…

Computational Engineering, Finance, and Science · Computer Science 2022-09-15 Chunyu Sui , Xinrui Li , Yinghang Song , Sirui Huang , Yunpeng Zan

The current philosophy of impact hazard considers the danger from small asteroids negligible. However, several facts claim for a revision of this philosophy. In this paper, some of these facts are reviewed and discussed. It is worth noting…

Astrophysics · Physics 2007-05-23 Luigi Foschini

In the past decade, hundreds of asteroid shape models have been derived using the lightcurve inversion method. At the same time, a new framework of 3-D shape modeling based on the combined analysis of widely different data sources such as…

Earth and Planetary Astrophysics · Physics 2016-08-31 J. Durech , B. Carry , M. Delbo , M. Kaasalainen , M. Viikinkoski

By means of a fully connected artificial neural network, we identified asteroids with the potential to impact Earth. The resulting instrument, named the Hazardous Object Identifier (HOI), was trained on the basis of an artificial set of…

Earth and Planetary Astrophysics · Physics 2020-02-05 John D. Hefele , Francesco Bortolussi , Simon Portegies Zwart

Among the currently known Near Earth Objects (NEOs), roughly 1400 are classified as being potentially hazardous asteroids. The recent Chelyabinsk event has shown that these objects can pose a real threat to mankind. We illustrate that high…

Instrumentation and Methods for Astrophysics · Physics 2013-11-19 Siegfried Eggl , Anatoliy Ivantsov , Daniel Hestroffer , Davide Perna , David Bancelin , William Thuillot

Event attribution in the context of climate change seeks to understand the role of anthropogenic greenhouse gas emissions on extreme weather events, either specific events or classes of events. A common approach to event attribution uses…

Methodology · Statistics 2018-02-06 Christopher J. Paciorek , Dáithí A. Stone , Michael F. Wehner

Exploration of asteroids and comets can give insight into the origins of the solar system and can be instrumental in planetary defence and in-situ resource utilization (ISRU). Asteroids, due to their low gravity are a challenging target for…

Robotics · Computer Science 2017-09-12 Himangshu Kalita , Erik Asphaug , Stephen Schwartz , Jekanthan Thangavelautham

Knowledge of the surface thermal inertia of an asteroid can provide insight into surface structure: porous material has a lower thermal inertia than rock. We develop a means to estimate thermal inertia values of asteroids and use it to show…

Earth and Planetary Astrophysics · Physics 2016-12-07 Alan Harris , Line Drube