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NERIES JRA4 Meeting Rome 4 and 5 December 2006 TASK A: SITE SELECTION Monography of the station CESENA Station code CSN__ Servizio Sismico Nazionale.

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Presentation on theme: "NERIES JRA4 Meeting Rome 4 and 5 December 2006 TASK A: SITE SELECTION Monography of the station CESENA Station code CSN__ Servizio Sismico Nazionale."— Presentation transcript:

1 NERIES JRA4 Meeting Rome 4 and 5 December 2006 TASK A: SITE SELECTION Monography of the station CESENA Station code CSN__ Servizio Sismico Nazionale

2 Location of the site General Site Information Code CSN__ Site Name-Location CESENA Surface Geology So

3 Geographical Data Latitude Longitude Altitude (m)90 Location of the station

4 Broader areaUr PictureY Free FieldY Type of networkPer Instrument location Orientation [L+] AddressParco della rocca Site Description – Housing Table Location of the station

5 Earthquake Recordings Type of InstrumentD Present ConditionDef Date of activation 2003/06/10 Date of deactivation Strong Motion RecordsY number of records with PGA<0.111 number of records with PGA>=0.11 maximum recorded PGA (g)0.118 Date of Max PGA recorded 2005/08/11 SourceINGV

6 MorfologyPl Basin Geometry Width Depth Length Closest Distance from Edge (Km) Morphological Data

7 Geological Data Geological mapY Stratigraphy & Lithology Y Bedrock Depth (m)outcrop Ground water table Water table depth Geological map Legenda Stazione accelerometrica AES8 Subsintema di Ravenna AES7 Subsintema di Villa Verucchio a2 Deposito di frana quiesciente

8 Geognostic Investigation In-Situ TestY Survey’s Year2002 Borehole stratigraphyY SPTN SPT-max. depth CPTY CPT-max. depth50 m Survey’s closest distance from station (m) Raw data availabilityY Type of raw dataD ReferencesMarcellini et al.,2002 “Elementi di sismicità dell’area Forlì-Cesena ai fini del Piano Territoriale di Coordinamento Provinciale”, Istituto per la Dinamica dei Processi Ambientali, CNR

9 Borehole stratigraphy Alluvium Limo sabbioso, sabbia limosa e sabbia molto fine Limo sabbioso Ghiaia media Sabbia limosa, sabbia molto fine e limo argilloso Limo sabbioso Sabbia fine e media Ghiaia media Limo sabbioso e sabbia limosa Argilla limosa e limo argilloso Ghiaia media Sabbia molto fine Argilla limosa (LAS1) Ghiaia media (Gh1) (LAS2) Ghiaia media (Gh2) (LAS3) (Gh3) (SAL) (Gh4) (Sa1) (Gh5) (LAS4) (ARL1) (Gh6) (Sa2) (ARL2)

10 Marcellini et al.,2002 “Elementi di sismicità dell’area Forlì-Cesena ai fini del Piano Territoriale di Coordinamento Provinciale”, Istituto per la Dinamica dei Processi Ambientali, CNR 234 CPT measurements!!

11 Geotechnical Laboratory Analysis Lab. TestN Survey’s Year  Resonant Column Test (G-g-D curves) Torsional Shear Test Triaxial Cyclic Loading Test Survey’s closest distance from station (m) Raw data availability Type of raw data References

12 Geophysical Data In-Situ TestY Survey’s Year2002 P-wave velocityY P-depth50 m P-methodDH S-wave velocityY S-depth50 m S-methodDH QpN Qp-depth Qp-method QsN Qs-depth Qs-method Survey’s closest distance from station (m) about 1000 m Raw data availabilityY Type of raw dataD EC8_CodeC References Dott. Luca Martelli (Regione Emilia Romagna)

13 Location surveyings

14 V s and V p Profiles (DH)

15 Profondità [m] Velocità onde S [m/s] Velocità onde P [m/s] 0 – – – – – – – – – – – – – – – – – – – – – – – LAS1 Gh1 LAS2 Gh2 LAS3 Gh3 V s and V p Profiles (DH)

16 Profondità [m] Velocità onde S [m/s] Velocità onde P [m/s] 26.0 – – – – – – – – – – – – – – – – – – – – – – – SAL Gh4 Sa1 Gh5 LAS4 ARL1 Gh6 Sa2 ARL2

17 Noise Recordings In-Situ TestN Survey’s Year Single station measurements duration of measurements Raw data availability Array measurements duration of meas. in central station Raw data availability References

18 Site Response Site Response AnalysisY Survey’s Year2002 Experimental Studies Earthquake Records Experimental Studies Ambient Noise Records Theoretical Studies 1DY Theoretical Studies 2D Theoretical Studies 3D ReferencesMarcellini et al.,2002 “Elementi di sismicità dell’area Forlì-Cesena ai fini del Piano Territoriale di Coordinamento Provinciale”, Istituto per la Dinamica dei Processi Ambientali, CNR

19 Contact Information InstituteSSN-DPC PersonFabio Sabetta


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