Seismicity of the Earth and Associated Phenomena

Leet, L. Don; Gutenberg, B.; Richter, C. F.

doi:10.2307/211302

Cited by 271 publications

(3 citation statements)

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“…The lack of detailed bathymetry for areas studied can influence the MWH. Furthermore, the magnitude obtainned for the invistigated scenario is about 8.5, which is smaller than the magnetudes calculated in [14] (8.75 -9) as well as those calculated by [15], [1] and [16]. However, recent estimates of the magnitude of the 1755 event have a range of 7.2 -8.2, which is more similar to the results obtained by [13].…”

Section: Discussionsupporting

confidence: 52%

The Tsunami Generated by the Gorringe Bank Fault: Analyzing Wave Heights and Travel Time in the Atlantic Coast of Morocco

Outiskt,

Tichli,

Baptista

et al. 2024

E3S Web Conf.

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Two hundred sixty-eight years (about three centuries) since the 1755 Lisbon tsunami, which provoked large-scale damage in Portugal, Spain and Morocco. Scientists in several countries have mobilized to develop investigative methods to study this extraordinary tsunami, with the aim of reducing the impact of waves in future events and protecting and warning populations at risk. However, the most important question remains whether the entire damaged community has sufficient information about the impact to prepare for tsunami risks. The aim of this paper is to determine the maximum wave heights in selected cities located within high-risk tsunami zones in Morocco, as well as the tsunami arrival time for each site. We used the Non-linear Shallow Water model With Nested Grids (NSWING) code to model tsunami propagation. Six cities were determined as observation points as being the subject of tsunami studies in previous work, namely Tangier, Asilah, Rabat, Casablanca, El-Jadida and Safi. The maximum wave height calculated within the Atlantic coast of Morocco exceeds 5 m in some locations and the first waves reach the Moroccan coast in 60 minutes. The authorities might utilize these results to develop evacuation plans.

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Section: Discussionsupporting

confidence: 52%

The Tsunami Generated by the Gorringe Bank Fault: Analyzing Wave Heights and Travel Time in the Atlantic Coast of Morocco

Outiskt,

Tichli,

Baptista

et al. 2024

E3S Web Conf.

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“…The recurrence parameters adopted for the PSHA in the present study are listed in Table 2. Gutenberg and Richter (1954) have formulated the earthquake recurrence. This classic earthquake recurrence is shown in the following relationship.…”

Section: Input Parametersmentioning

confidence: 99%

Probabilistic Seismic Hazard Analysis Incorporating Monte Carlo Method in the Case of Adelaide Region

Setiawan

2017

Indonesian J. Geosci.

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-A topic of seismic hazard analysis (SHA) is briefly elaborated. A probabilistic seismic hazard analysis (PSHA) is commonly used to assess the ground motion level expected with different likelihood at a rock site during a future seismic event. The Incorporating Monte Carlo method into PSHA in an intraplate region (i.e. Adelaide region) is an interesting topic to explore. The result of the analysis using this method is able to characterize the likelihood of seismicity in a targeted region. Furthermore, the results clearly display the seismic ground motions in term of peak ground acceleration and peak ground velocity in Adelaide region. The de-aggregation of the analysis suggests two expected severe events for the Adelaide City. The first expected event is an earthquake M5.2 from a distance of 15 km and 25 km from the city. The second expected one corresponds to an earthquake M6.6 occurring 85 km away from the Adelaide City. However, the results of this analysis must be treated carefully due to dubious seismic data catalogue for a relatively large seismic event in Adelaide region.

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“…Events are thus scale free, a property that results in a power-law distribution of event sizes (Bak et al, 1987). Various dynamical systems have been analysed using this method, including but not limited to the sizes and frequencies of earthquakes (Leet et al, 1950) and forest fires (Drossel and Schwabl, 1992), magnetic particle spins within magnetic materials, in both empirical experiments and simulations (Sethna et al, 2001), swarm sizes in groups of insects (Attanasi et al, 2014), stock market fluctuations (Bouchaud, 2000), and failures in power grids (Carreras et al, 2000). Systems such as magnetic particles require a parameter to be tuned so that the system undergoes a phase transition from a subcritical or supercritical regime to a critical state.…”

Section: Introductionmentioning

confidence: 99%

Critical Spatial-Temporal Dynamics and Prominent Shape Collapse of Calcium Waves Observed in Human hNT Astrocytes in Vitro

Mellor

Graham²,

Unsworth³

2022

Front. Physiol.

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Networks of neurons are typically studied in the field of Criticality. However, the study of astrocyte networks in the brain has been recently lauded to be of equal importance to that of the neural networks. To date criticality assessments have only been performed on networks astrocytes from healthy rats, and astrocytes from cultured dissociated resections of intractable epilepsy. This work, for the first time, presents studies of the critical dynamics and shape collapse of calcium waves observed in cultures of healthy human astrocyte networks in vitro, derived from the human hNT cell line. In this article, we demonstrate that avalanches of spontaneous calcium waves display strong critical dynamics, including power-laws in both the size and duration distributions. In addition, the temporal profiles of avalanches displayed self-similarity, leading to shape collapse of the temporal profiles. These findings are significant as they suggest that cultured networks of healthy human hNT astrocytes self-organize to a critical point, implying that healthy astrocytic networks operate at a critical point to process and transmit information. Furthermore, this work can serve as a point of reference to which other astrocyte criticality studies can be compared.

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Seismicity of the Earth and Associated Phenomena

Cited by 271 publications

References 0 publications

The Tsunami Generated by the Gorringe Bank Fault: Analyzing Wave Heights and Travel Time in the Atlantic Coast of Morocco

The Tsunami Generated by the Gorringe Bank Fault: Analyzing Wave Heights and Travel Time in the Atlantic Coast of Morocco

Probabilistic Seismic Hazard Analysis Incorporating Monte Carlo Method in the Case of Adelaide Region

Critical Spatial-Temporal Dynamics and Prominent Shape Collapse of Calcium Waves Observed in Human hNT Astrocytes in Vitro

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