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Journal Article
Published: 01 January 2015
Bulletin de la Société Géologique de France (2015) 186 (1): 3–19.
... Thouvenot; Jérôme Van Der Woerd; Katia Van Der Woerd Abstract The aim of the SI-Hex project (acronym for « Sismicité Instrumentale de l’Hexagone ») is to provide a catalogue of seismicity for metropolitan France and the French marine economic zone for the period 1962–2009 by taking into account...
FIGURES | View All (15)
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<span class="search-highlight">SI</span>-<span class="search-highlight">Hex</span> magnitudes M w  of earthquakes located outside the <span class="search-highlight">Si</span>-<span class="search-highlight">Hex</span> zone and f...
Published: 01 January 2015
Table VIII SI-Hex magnitudes M w of earthquakes located outside the Si-Hex zone and felt with EMS-98 macroseismic intensity I≥IV.
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Short-period seismic stations contributing to the <span class="search-highlight">SI</span>-<span class="search-highlight">Hex</span> backbone catalogue...
Published: 01 January 2015
Fig. 1 Short-period seismic stations contributing to the SI-Hex backbone catalogue in two periods: a) [1962–1977]; and b) [1998–2005]. Red triangles are stations used in the hypocentre localization during indicated period and yellow triangles show the stations no longer active after 1997.
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Example of RMS precision of the computed epicentre location in the <span class="search-highlight">SI</span>-<span class="search-highlight">Hex</span> b...
Published: 01 January 2015
Fig. 2 Example of RMS precision of the computed epicentre location in the SI-Hex backbone catalogue. For each event, the radius of the circle with an area equal to the standard deviation ellipse is calculated. Precisions shown here correspond, for each 0.1°× 0.1° pixel, to the averaged circle
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Map of identified artificial seismic events in the <span class="search-highlight">SI</span>-<span class="search-highlight">Hex</span> extended zone.
Published: 01 January 2015
Fig. 14 Map of identified artificial seismic events in the SI-Hex extended zone.
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Instrumental seismicity in metropolitan France. (a) Map of the extended <span class="search-highlight">SI</span>-...
Published: 20 July 2020
Fig. 2 Instrumental seismicity in metropolitan France. (a) Map of the extended SI-Hex catalogue (1962–2018). Colored circles indicate earthquake magnitudes Mw. (b) Number of recorded earthquakes per year. (c) Cumulative magnitude-frequency distribution of seismicity. Solid circles: Instrumental
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Seismicity 1962–2009 of metropolitan France and the surrounding marine excl...
Published: 01 January 2015
Fig. 15 Seismicity 1962–2009 of metropolitan France and the surrounding marine exclusive economic zone extended 20 km away to account for maximum location uncertainty (SI-Hex-zone). Coloured symbols show the epicentres located either within the SI-Hex zone, or abroad but felt with EMS-98
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French metropolitan seismicity 1962–2009. (a) Magnitude as a function of ti...
Published: 25 September 2018
Figure 1. French metropolitan seismicity 1962–2009. (a) Magnitude as a function of time. (b) Frequency size distribution of all events (SIHex database, Cara et al. , 2015 ).
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Number of events identified as known earthquake (“ke”), unknown (“uk”) and ...
Published: 01 January 2015
Table VI Number of events identified as known earthquake (“ke”), unknown (“uk”) and known mine (“km”) by four major contributors to the original SI-Hex database and related percentage.
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Number of events per magnitude range and time periods. The M w  magnitude r...
Published: 01 January 2015
Table VII Number of events per magnitude range and time periods. The M w magnitude ranges correspond to the main divisions of the procedure used for computing the SI-Hex magnitudes. The time periods correspond to the main steps in the recording procedures (paper, analog magnetic tapes
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Example of regional earthquake coda waves recorded by the LDG 1-Hz vertical...
Published: 01 January 2015
Fig. 5 Example of regional earthquake coda waves recorded by the LDG 1-Hz vertical velocimetric sensor at station MFF. This M L-LDG = 5.7 event occurred on September 30, 2002, in the northwestern region near Lorient (M w = 5.3 according to Perrot et al. [2005] ; and M w = 5.2 from the SI
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Seismicity map for metropolitan France M 2.5, 1962–2009, and the 26 reservo...
Published: 25 September 2018
Figure 2. Seismicity map for metropolitan France M 2.5, 1962–2009, and the 26 reservoir locations we use in this study. Small gray circles are M 2.5–3.9 earthquakes. Large circles are M 4 and above earthquakes. The earthquake catalog is from the SIHex database ( Cara et al. , 2015 ). Triangle
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Four zones of preferential location solutions of the 2014 version of the <span class="search-highlight">SI</span>...
Published: 01 January 2015
Fig. 3 Four zones of preferential location solutions of the 2014 version of the SI-Hex catalogue (inset 3a); 3b: Alpine zone (Sismalp, Grenoble); 3c: Mediterranean zone (Geoazur, Nice); 3d: Pyrenees zone (OMP, Toulouse). Geoazur solution is preferred in the overlapping area between zones b) and c
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Regional attenuation parameters β 1  and β 2  used to model the coda envelo...
Published: 01 January 2015
Table V Regional attenuation parameters β 1 and β 2 used to model the coda envelopes when both the stations and the epicentre are located in one of the four SI-Hex regions. For the stations located in the central region (yellow triangle in figure 4 ), unique values of ß1 and ß2 are used
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Relationship between structural inheritance and seismicity in metropolitan ...
Published: 20 July 2020
, SI-Hex catalogue).
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Orthogonal linear regression between M L-LDG  and M w  from  Godano  et al....
Published: 01 January 2015
of the relationship used in SI-Hex for intermediate magnitudes (3.117 ≤ M L-LDG ≤ 4).
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Plot of average (Al,<span class="search-highlight">Si</span>)-O distance vs. site occupancy fraction of <span class="search-highlight">Si</span> in (Al...
Published: 01 August 2011
) ratio. Ca-Hex: CaMg 2 Al 6 O 12 hexagonal aluminous phase ( Miura et al. 2000 ), K-Hex: K 1.00 Mg 2.00 Al 4.81 Si 1.13 O 12 hexagonal aluminous phase (this study), Na-Hex: Na 1.04 Mg 1.88 Al 4.64 Si 1.32 O 12 hexagonal aluminous phase (this study), Mg-Cf: MgAl 2 O 4 calcium ferrite ( Kojitani et al
Journal Article
Published: 01 July 2015
American Mineralogist (2015) 100 (7): 1562–1567.
... 1.548 Si 6.452 O 16 (Cs-HEX) with a hexacelsian framework forms, which has a ca. 1.8% smaller unit-cell volume per 80O f . This phase can be recovered after pressure release. The structure of the recovered Cs-HEX has been refined in space group P 6 3 / mcm with a = 5.3731(2) Å and c = 16.6834(8...
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Journal Article
Published: 01 February 2006
Mineralogical Magazine (2006) 70 (1): 73–81.
... distributions in electron diffraction indicate that most plates of yukonite at Nalychevskie hot springs have orthorhombic symmetry, but some are hexagonal with a hex = 11.3 Å. The orthorhombic cell is C-centred with a orth = √3 a hex , b orth = a hex . High-resolution images of edge-on mounts indicate...
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Figure 1. Log  K  values for hydrolysis of GeO 2(<span class="search-highlight">hex</span>)  and SiO 2 , and Ge&#x2F;S...
Published: 01 November 2002
Figure 1. Log K values for hydrolysis of GeO 2(hex) and SiO 2 , and Ge/Si fluid (μmol/mol) of fluid in equilibrium with Ge-bearing quartz (1.2 ppm Ge) as function of temperature. Experimental data (filled circles) for GeO 2(hex) solubility are from Pokrovski and Schott (1998) .