Seismotectonic significance of the 2008–2010 Walloon Brabant seismic swarm in the Brabant Massif, Belgium

Noten, Koen Van; Lecocq, Thomas; Shah, Anjana K.; Camelbeeck, Thierry

doi:10.1016/j.tecto.2015.05.026

Cited by 9 publications

(4 citation statements)

References 50 publications

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“…The earthquakes were of magnitude M w between −0.9 and 3.2 and concentrated within an area of small dimension (<10 × 10 km 2 ). The hypocentral distribution (depth ranging from 5.5 to 7 km) draws a fault surface that coincides with an ancient NW-SE structure in the basement determined by gravimetry [Van Noten et al, 2015]. It is likely that on this same structure a sequence of earthquakes with magnitude (ML) up to 4 took place in the 1950s, a sequence that is unfortunately poorly documented due to a lack of instrumental data.…”

Section: Artois-brabant-hainaut-ardennesmentioning

confidence: 69%

“…from 1.1 to 5.4. We complement the dataset with ten mechanisms from the Hainaut [Camelbeeck et al, 2007] and ten mechanisms from the Brabant Massif [Van Noten et al, 2015] on the French-Belgium border. Most of the mechanisms have been determined using the polarities of first ground motion, and only a few of them using full waveform inversion.…”

Section: Focal Mechanisms and Tensors Of Stress And Strain Ratementioning

confidence: 99%

“…This last model is typically Poissonian in spatial and temporal occurrence; nevertheless, considering earthquake catalogues and paleoseismic results, it is highly unlikely that it applies to the western European seismotectonics. Recent works have shown evidence of neotectonics and active faults capable of producing large earthquakes in intraplate Europe and have addressed the problem of coseismic surface ruptures and their return period [Camelbeeck and Meghraoui, 1998, Lemeille et al, 1999, Meghraoui et al, 2001, Van Noten et al, 2015, Shipton et al, 2016. This problem is fundamental in two different aspects:…”

Section: Constraints On the Long-term Earthquake Activitymentioning

confidence: 99%

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Seismotectonics in Northeastern France and neighboring regions

Doubre¹,

Meghraoui²,

Masson³

et al. 2022

Comptes Rendus. Géoscience

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The region of northeastern France is affected by low-magnitude background seismicity, with the rare occurrence of moderate earthquakes, which gives this region a non-negligible seismic risk. We provide an overview of the seismicity and seismotectonics of this intraplate domain and of its subregions: the Upper-Rhine Graben (URG), the external range and foreland of Jura, the Vosges, northern France and southern Belgium. Previously published catalogues over historical and instrumental times are used, and the epicentral distribution of earthquakes is compared to known tectonic structures, and the recently computed deformation field. Although no large earthquakes with M w > 6.0 occurred since the 1356 Basel seismic event (Io IX, MKS), the recent identification of active faults suggests periods of high seismic strain rates in the past. The origin of the seismic activity in each of these sub-regions, characterized by low to very-low strain rates, is attributed to pre-existing faults reactivated under specific natural or anthropogenic conditions.

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Section: Artois-brabant-hainaut-ardennesmentioning

confidence: 69%

Section: Focal Mechanisms and Tensors Of Stress And Strain Ratementioning

confidence: 99%

Section: Constraints On the Long-term Earthquake Activitymentioning

confidence: 99%

See 1 more Smart Citation

Seismotectonics in Northeastern France and neighboring regions

Doubre¹,

Meghraoui²,

Masson³

et al. 2022

Comptes Rendus. Géoscience

View full text Add to dashboard Cite

show abstract

“…), it is difficult to reliably relate the observed anomalies to processes occurring at a certain depth in the subsurface. Matched bandpass filters (Phillips, 2001; Van Noten et al., 2015) are one way to estimate the depth of potential field sources directly form the data, but the method require a fairly regular spatial sampling of the field to remain unbiased. The field constraints at our study site prevented us to regularly cover the area with SP measurements therefore hampering an accurate estimation of the SP signal sources at depth.…”

Section: Discussionmentioning

confidence: 99%

A Multi‐Hydrogeophysical Study of a Watershed at Kaiwi Coast (Oʻahu, Hawaiʻi), using Seismic Ambient Noise Surface Wave Tomography and Self‐Potential Data

Grobbe

Mordret

Barde-Cabusson

et al. 2021

Water Resources Research

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As a Pacific Island, Hawaiʻi's hydrological processes are influenced by strong spatio-temporal gradients in, and close interactions between, rainfall, land-use, near-surface geological conditions, and complicated subsurface hydrogeology. Due to their volcanic nature, the hydrogeology of Hawaiʻi predominantly consists of basaltic bedrock formations that vary in terms of, for example, the type of lava flow deposit ('A'ā vs. Pāhoehoe), age, and thickness of individual flow units. Several factors, such as the age of the islands and climatic variability, control regolith development, and its characteristics (Ryu et al., 2014;P. Vitousek, 2004).Hawaiian hydrogeology possesses strong spatio-temporal gradients and heterogeneity at a variety of spatial scales (Figure 1). For example, basaltic formations are dominated by both small-and intermediate-scale fractures and large-scale faults that strongly affect chemical fate and transport processes (Deng & Spycher, 2019). Mechanical weathering and chemical alteration create saprolite layers with low hydraulic conductivity, forming barriers to flow (Figure 1) and/or causing groundwater to be trapped in perched formations (Hunt, 1996;Mink & Lau, 1980;Oki, 2005). On the island of Oʻahu, as well as on other Pacific islands, valley-ridge complexes are known to generate highly complicated groundwater systems (Oki, 2005). Older alluvium deposits, created during periods of extensive erosion that carved deep valleys in the original volcanoes, are of hydrological importance due to their relatively low hydraulic conductivity, estimated to be in the range of 3.96 × 10 −3 m/day (0.013 ft/day) to 0.33 m/day (1.08 ft/day) (Wentworth, 1938). The low permeability is related to chemical alteration, weathering, and compaction (Oki, 2005;Wentworth, 1951).

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The 2014–2015 earthquake series in the northern Upper Rhine Graben, Central Europe

Homuth

Rümpker

2016

J Seismol

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Seismotectonic significance of the 2008–2010 Walloon Brabant seismic swarm in the Brabant Massif, Belgium

Cited by 9 publications

References 50 publications

Seismotectonics in Northeastern France and neighboring regions

Seismotectonics in Northeastern France and neighboring regions

A Multi‐Hydrogeophysical Study of a Watershed at Kaiwi Coast (Oʻahu, Hawaiʻi), using Seismic Ambient Noise Surface Wave Tomography and Self‐Potential Data

The 2014–2015 earthquake series in the northern Upper Rhine Graben, Central Europe

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