Tootfinder

The timing of this video being published three days before the actual earthquake is obviously a coincidence, but what luck for the creator!
#earthquakes

Dynamic analysis of free-free Timoshenko beams on elastic foundation under transverse transient ground deformation
Gersena Banushi
https://arxiv.org/abs/2507.22850 https://

Dynamic analysis of free-free Timoshenko beams on elastic foundation under transverse transient ground deformation
Underground infrastructure, such as pipelines and tunnels, can be vulnerable to the effect of transient ground deformation (TGD) caused by different vibration sources, including earthquakes and traffic loads. Current design methods are based on simple analytical models that idealize the soil movement as a traveling sinusoidal wave, neglecting both the system's inertia and the relative displacement at the soil-structure interface. However, this assumption may not be valid for buried large diamet…

Google researchers say Android's early-warning system detected and issued alerts for 1,200 earthquakes since 2021, sometimes giving up to 15-60 seconds' notice (Kasha Patel/Washington Post)

Your Android phone is getting better at warning you about earthquakes
An early-warning system on Android phones has detected more than 1,000 earthquakes worldwide since 2021, sometimes giving people 15 to 60 seconds’ notice

Non-randomness of Japan megaquakes implied by stress recovery and accumulation
K. Z. Nanjo, T. Hori, D. Iwata
https://arxiv.org/abs/2507.21478 https://arxi…

Non-randomness of Japan megaquakes implied by stress recovery and accumulation
Monitoring stress recovery and accumulation associated with megaquakes helps to assess their recurrence. Previous studies proposed a high likelihood of imminent recurrence for the 2011 Tohoku and the 17th-century Hokkaido megaquakes belonging to the magnitude-9 class, although their current stress state remains uncertain. Here we compare the occurrence of small earthquakes relative to larger ones, using b-values, showing high b-values in the source area of the Tohoku earthquake, indicating low …

Wow, this is freaky: https://www.rnz.co.nz/news/national/567527/first-video-of-earth-s-surface-lurching-sideways-in-earthquake-offers-new-insights video of lateral 'slip' in Myanmar quake from earlier …

Earthquake body wave extraction using sparsity-promoting polarization filtering in the time-frequency domain
Hamzeh Mohammadigheymasi, Bahare Imanibadrbani, Ali Gholami, Ahmad Sadidkhouy
https://arxiv.org/abs/2508.20542

Earthquake body wave extraction using sparsity-promoting polarization filtering in the time-frequency domain
Seismic waves generated by earthquakes consist of multiple phases that carry critical information about Earth's internal structure as they propagate through heterogeneous media. These phases provide constraints from different regions of the Earth, such as the crust, mantle, and even the cores. The choice of phase depends on the study target and scientific objective: surface waves are suited for imaging shallow structures, whereas body waves yield higher-resolution information at depth. A key ch…

A big question will be how to regulate national scale things. Like our central bank, the Federal Reserve, or our military. We have (or had) a reasonable system over those, and those systems should be retained.
I think the idea that states cover disasters in other states is going to need to be revisited. Some states, like California, are recognizing and beginning to self-address things like earthquakes and fires - For instance my home insurance has increased several fold. But why sh…

I hate earthquakes. They always scare me and I've been through a million of them
#quake

I see a bad moon rising.
I see trouble on the way.
I see earthquakes and lightnin'
I see bad times today.
Don't go 'round tonight,
It's bound to take your life.
There's a bad moon on the rise.
-- J. C. Fogerty, "Bad Moon Rising"

Inter-event time statistics of earthquakes as a gauge of volcano activity
Sumanta Kundu, Anca Opris, Yosuke Aoki, Takahiro Hatano
https://arxiv.org/abs/2506.09203

Inter-event time statistics of earthquakes as a gauge of volcano activity
The probability distribution of inter-event time (IET) between two consecutive earthquakes is a measure for the uncertainty in the occurrence time of earthquakes in a region of interest. It is well known that the IET distribution for regular earthquakes is commonly characterized by a power law with the exponent of 0.3. However, less is known about other classes of earthquakes, such as volcanic earthquakes, which do not manifest mainshock-aftershocks sequences. Since volcanic earthquakes are cau…

🪇 Engineers shake tallest steel-framed building ever tested on an earthquake simulator
#buildings

Engineers shake tallest steel-framed building ever tested on an earthquake simulator
The tallest steel-framed building ever tested on an earthquake simulator started moving slowly, swaying and twisting. The 10-story, 100-foot structure was experiencing simulations of real earthquakes, including the 6.9 magnitude, 1989 Loma Prieta temblor, as part of an effort to determine if height limits for buildings made of cold-formed steel could be increased.

Non-local random deposition models for earthquakes and energy propagation
Philippe Carmona, Fran\c{c}ois P\'etr\'elis, Nicolas P\'etr\'elis
https://arxiv.org/abs/2506.23853

Non-local random deposition models for earthquakes and energy propagation
We investigate a new class of non-local random deposition models, initially introduced by physicists to study the field of mechanical constraints (stress) applied along a line or on a given area located in a seismic zone. The non-local features are twofold. First, the falling objects have random and heavy-tailed dimensions. Second, the locations where the objects are falling are at least for some of the models that we consider, depending on the shape of the surface before deposition. We conside…

From Pixels to Damage Severity: Estimating Earthquake Impacts Using Semantic Segmentation of Social Media Images
Danrong Zhang, Huili Huang, N. Simrill Smith, Nimisha Roy, J. David Frost
https://arxiv.org/abs/2507.02781

From Pixels to Damage Severity: Estimating Earthquake Impacts Using Semantic Segmentation of Social Media Images
In the aftermath of earthquakes, social media images have become a crucial resource for disaster reconnaissance, providing immediate insights into the extent of damage. Traditional approaches to damage severity assessment in post-earthquake social media images often rely on classification methods, which are inherently subjective and incapable of accounting for the varying extents of damage within an image. Addressing these limitations, this study proposes a novel approach by framing damage seve…

A Multi-Model Probabilistic Framework for Seismic Risk Assessment and Retrofit Planning of Electric Power Networks
Huangbin Liang, Beatriz Moya, Francisco Chinesta, Eleni Chatzi
https://arxiv.org/abs/2508.07376

A Multi-Model Probabilistic Framework for Seismic Risk Assessment and Retrofit Planning of Electric Power Networks
Electric power networks are critical lifelines, and their disruption during earthquakes can lead to severe cascading failures and significantly hinder post-disaster recovery. Enhancing their seismic resilience requires identifying and strengthening vulnerable components in a cost-effective and system-aware manner. However, existing studies often overlook the systemic behavior of power networks under seismic loading. Common limitations include isolated component analyses that neglect network-wid…

An equation of motion for unsteady frictional slip pulses
Eran Bouchbinder
https://arxiv.org/abs/2506.16097 https://arxiv.org/pdf/250…

An equation of motion for unsteady frictional slip pulses
Frictional sliding, e.g., earthquakes along geological faults, are mediated either by frictional crack-like ruptures, where interfacial (fault) slip is accumulated during the entire sliding event, or by frictional pulse-like ruptures, featuring a finite length over which slip is accumulated. Our basic understanding of slip pulses, which are believed to dominate most crustal earthquakes, is still incomplete. Here, building on recent progress, we present an analytic equation of motion for rate-an…

Global lattice models of a rotating planet -- view on shake, rattle and roll
William E. Barnfield, Alessio Kandiah, Vladimir Frid, Igor B. Movchan, Alexander B. Movchan
https://arxiv.org/abs/2508.16630

Global lattice models of a rotating planet -- view on shake, rattle and roll
A new approach, based on the analysis of a spectral problem for a discrete gyroscopic system, to modelling earthquakes on a rotating planet is presented in this paper. The eigenmodes of gyroscopic three-dimensional icosahedron-dodecahedron lattices are used for the discrete approximations of Earth's vibrations. Related model of the gyroscopic centred icosahedron lattice reveals new results about the motion of Earth's core. The vibrations of the tectonic plate boundaries, inducing shear and long…

Do Earthquakes Wake More Slopes Than They Calm?
Ashok Dahal, Hakan Tanya\c{s}, Alexander L. Handwerger, Luigi Lombardo, Eric Fielding
https://arxiv.org/abs/2508.08819 https://…

Do Earthquakes Wake More Slopes Than They Calm?
Strong earthquakes can have a dual impact on the slow-moving landslide budget of a landscape by either triggering new actively deforming hillslopes or stabilizing existing ones. However, their regional-scale influence on hillslope processes remains poorly understood due to limited observational coverage and the masking effects of long-wavelength post-seismic signals. This knowledge gap constrains our ability to assess post-seismic landslide hazards, particularly since actively deforming hillslo…

Tidal Triggering of Magnitude 7 Earthquakes by Jupiter
E. W. Holt, Eric Newman
https://arxiv.org/abs/2508.07064 https://arxiv.org/pdf/2508.07064

Tidal Triggering of Magnitude 7+ Earthquakes by Jupiter
This work uses a chi-squared test of independence to determine if days that include earthquakes greater than or equal to magnitude 7 (M7+) from 1960 to 2024 are truly independent of the position of Earth in its orbit around the sun. To this end, this study breaks up Earth's orbit into days offset on either side of two reference Earth-Sun-Planet orientations, or zero-points: opposition and inferior conjunction. A computer program is used to sample U.S.G.S. earthquake and N.A.S.A. Horizons epheme…

Fault based recurrence models and occurrence probabilities of large earthquakes (M6.0) in the Corinth Rift, Greece
C. Kourouklas, P. Bonatis, E. Papadimitriou, V. Karakostas
https://arxiv.org/abs/2506.04382

Fault based recurrence models and occurrence probabilities of large earthquakes (M6.0) in the Corinth Rift, Greece
The M6.0 earthquakes recurrence times, Tr, exhibit high variability from 40 to 1500 years, with the southern Corinth Rift fault segments reaching values up to 350 years and their antithetic ones ranging from 400 to 1500 years. The fault segments in the Corinth Rift can be divided into three groups, according to their recurrence behaviour, with some of them exhibiting significantly lower renewal model probabilities than the Poisson model, others showing nearly equal probabilities, and one segmen…

Automated Classification of Volcanic Earthquakes Using Transformer Encoders: Insights into Data Quality and Model Interpretability
Y. Suzuki, Y. Yukutake, T. Ohminato, M. Yamasaki, Ahyi Kim
https://arxiv.org/abs/2507.01260

Automated Classification of Volcanic Earthquakes Using Transformer Encoders: Insights into Data Quality and Model Interpretability
Precisely classifying earthquake types is crucial for elucidating the relationship between volcanic earthquakes and volcanic activity. However, traditional methods rely on subjective human judgment, which requires considerable time and effort. To address this issue, we developed a deep learning model using a transformer encoder for a more objective and efficient classification. Tested on Mount Asama's diverse seismic activity, our model achieved high F1 scores (0.930 for volcano tectonic, 0.931…

SPIDER: Scalable Probabilistic Inference for Differential Earthquake Relocation
Zachary E. Ross, John D. Wilding, Kamyar Azizzadenesheli, Aitaro Kato
https://arxiv.org/abs/2508.12117

SPIDER: Scalable Probabilistic Inference for Differential Earthquake Relocation
Seismicity catalogs are larger than ever due to an explosion of techniques for enhanced earthquake detection and an abundance of high-quality datasets. Bayesian inference is a popular framework for locating earthquakes due to its ability to propagate and quantify uncertainty into the inversion results, but traditional methods do not scale well to high-dimensional parameter spaces, making them unsuitable for double-difference relocation where the number of parameters can reach the millions. Here…

This https://arxiv.org/abs/2403.04310 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Endo-exo framework for a unifying classification of episodic landslide movements
Landslides exhibit intermittent gravity-driven downslope movements developing over days to years before a possible major collapse, commonly boosted by external events like precipitations and earthquakes. The reasons behind these episodic movements and how they relate to the final instability remain poorly understood. Here, we develop a novel "endo-exo" theory to quantitatively diagnose landslide dynamics, capturing the interplay between exogenous stressors such as rainfall and endogenous damage…

Turbulence in the Geomagnetic Field at Earth Surface
Mingshu Zhao, Xiaoping Zeng, Yunfang Lin
https://arxiv.org/abs/2508.06143 https://arxiv.org/pdf/2508.0…

Turbulence in the Geomagnetic Field at Earth Surface
We investigated turbulence-like behavior in the geomagnetic field using ground-based magnetic observatory data across China. Through analysis of spatial and temporal structure functions, we find power-law scaling consistent with Kolmogorov-like turbulence under extended self-similarity. We also identify significant correlations between vertical geomagnetic field variations and large earthquakes. The combination of turbulent characteristics with these correlations suggests a physical mechanism w…

Role of non-extensivity $q$-parameter in tectonic seismic forecasting
Oscar Sotolongo-Costa, Miguel Eduardo Mora-Ramos
https://arxiv.org/abs/2508.04932 https://

Role of non-extensivity $q$-parameter in tectonic seismic forecasting
By writing total Tsallis entropy as a function of non-extensivity q-parameter withing the fragment-asperity model for earthquakes, a critical range of values is identified: 1.4

Cluster analysis of earthquake hypocenters in Azerbaijan and surrounding territories
Sergii Skurativskyi, Sergiy Mykulyak, Yuliya Semenova, Kateryna Skurativska
https://arxiv.org/abs/2506.22829

Cluster analysis of earthquake hypocenters in Azerbaijan and surrounding territories
The research focuses on seismic events that occurred in Azerbaijan and adjacent territories, regions known for strong seismic activity. We analyze a catalog of recorded earthquakes between 2010 and 2023, extracting the locations of the earthquake hypocenters for study purposes. Using statistical methods and cluster analysis tools, we developed a procedure for partitioning hypocenter clusters. The procedure begins with estimates of the Morisita Index, which is suitable for preliminary assessment…