LABEXGEAUTHERMIEPROFONDECallforProject20132014

MagnetoTelluricMonitoringofgeothermalreservoir(SMTGothermie)

ProjectproposedbyPascalSAILHACIPGS

EnglishAbstract

Amongtheinnovativemethodsthatcancontributetoimprovingthecharacterizationandmonitoringof geothermal reservoirs, the project SMTGothermie focuses on the magnetotelluric (MT).Basically,SMTGothermieaimsatusingtimeseriesofthemagneticandelectricalfieldstoimageandfollowgeothermalactivity.ThemainmethodisMTwhichisbasedonthediffusionofEMwaveswithin the Earth and is related to the electrical conductivity at depth, a proxy for porosity,undergroundwaterchemicalpropertiesandtemperature.Besides,themagneticandelectricalfieldsmight appear to be influenced by electrokinetic phenomena and exhibit socalled seismoelectromagnetic signalswhich couldhelp in the characterizationofunderground flows and in theassessmentofmicroseismichazard.

During2013,theprojecthasbeenfocusedonthe followingworks: improvementofMTprocessing(especially at low frequencies

LABEXGEAUTHERMIEPROFONDEAppelProjet20132014

SuiviMagntoTelluriquedunrservoirgothermiqueSMTGothermie

A/Bilandactivits(2013)

Surlademandeinitiale(111k),leprojetatsoutenupartiellement(22.5%).Revueslabaisse,lesactionsmenescejourdepuisledbutduprojet(printempsetautomne2013)sontlessuivantes:

Amlioration des outils dinterprtationMT de lEOST:meilleures contraintes des bassesfrquencespartraitementjointdedonnesmagntiquesdobservatoire(1Hz).

Lvaluation de deux sites possibles pour des mesures continues (512Hz) servant derfrencemagntiquesurdeuxsitesmaintenusparlEOST:luneenlimiteNordOuestdelaCUS,J9(Observatoiregravimtrique),lautredanslesVosgesnonloinduMontSaintOdile,au Welschbruch (Observatoire gomagntique). Le premier a permis de corriger lacalibrationdesdeuxtypesdesondesmagntiques(MFS06etMFS07e)maisnepeutpastreutilis comme rfrence en raison de bruits dorigine anthropique mal identifis et nepouvant pas tre corrigs par filtrage; le second site peut tre utilis comme site derfrencemaisestaffectparlepassagedevhicules.Cesiteafonctionndu12juinau21juillet(chantillonnage512Hz)avecdessondesMFS06(2voiesmagntiqueshorizontales).

UnepremireexpriencedesuiviMTetPSatraliseproximitdusitedECOGIsuivantlesstimulationsduprintemps2013:desmesuresPSetMTprsde lastationsismologiqueRITT,etdesmesuresMTprsdelastationOPS4.EnPS,nousavonsdesmesuresdu28juinau 23 juillet et du 8 aout au 25 sept. (chantillonnage 1min). EnMT, en raison deproblmesdalimentation,nousnavonspasunrelsuiviencontinu:nousavonsquelquessquences de 24h OPS4 (2 voies lectriques, et 3 voiesmagntiques avecMFS07e), etdavantageRITT (2voieslectriques,2voiesmagntiqueshorizontalesavecMFS06et1verticalesavecMFS07e)onousavonsdessquencesde23jours(2629juin,14juillet,58juillet);onnoteraquedautressquencessontdisponiblespartirdu13juin,maisellenefontpasencorelobjetduneanalyseMTcarunedes2voieslectriquesestmalenregistre.

Nousavonsaussitestlaconnectivitdesondesmagntiques(CMA)anciennementacquisespar lIPGSdans le cadreduPNRH (il y a15 ans), avecune acquisitionMetronixmoderneADU07e:par comparaisondesmesuresbrutesavec cellesde sondesmodernesMFS06etMFS07e, nous avons constat quon obtenait une dynamique comparable mme aprsfiltragedu50Hz.Afindepermettreleurutilisationsurleterrain,8sondesdecetypeonttcalibreschezMetronixet7pourronttreutilisespourdespriodes

B/Projetpourlapoursuiteduprojet(2014)

Plusieurspointsrestentconsidrerpourlamiseaupointetlvaluationduneapplicationdusuivimagntotelluriqueddilagothermieprofonde.Aussi,nousenvisageonsdepoursuivreleprojetenabordantlestachessuivantes:

Traitementdesdonnesacquisesen2013Master2(TimothTartrat)+P.Sailhac+H.Larnier+A.ChambodutLesdonnesde2013ont traite laideduneversionamlioreduprogrammede traitementrobusteissuedelathsedePierreWawrzyniack.Ceprogrammeassureunegestionautomatiquedesdatesetchantillonnagesdessriestraiter,etpermetletraitementdebruits50Hz(secteur)et50Hz/3(cheminsdeferallemand).Nanmoinssurlessriesde24henregistreslorsdelexpriencedeJuinJuillet2013,ellenaconduitqudesestimationsdimpdancedesfrquences>0.5Hz,cequi correspond des profondeurs dinvestigations demoins de 2km. Nous voulonsmaintenantutiliser lesprocduresdveloppes lorsdu stagedeMaster2deHugo Larnier,pour intgrerdesdonnesdobservatoiregomagntiqueetretraitertouteslesdonnesenprolongeantlasensibilitdestraitementsdeplusgrandesprofondeur.CetravailferalobjetdunepartiedustagedeMaster2deTimothTartrat(financsurlesreliquatsdescrdits2013).

ModlisationsimpleparsourcesdipolairesMaster2(TimothTartrat)+P.SailhacPour amliorer notre connaissance des signatures magntiques et lectriques causes par unevariationde conductivitouparune circulationde fluideenprofondeur, le stagedeMaster2deTimothTartratcomporteaussiunephasedemodlisation.Dansunpremiertemps,afindviterlatropgrandecomplexitdunemodlisationraliste,nouscommenceronsenabordantleproblmelaidedesourcesdipolaires,lectriquesoumagntiques,placesdansunmilieueffectifdimpdanceuniforme: on pourra faire varier leur profondeur, leur intensit, et leur direction afin daborderlinfluencedevariationsdeconductivit(pareffetvortexougalvanique)oudecirculationdefluide(parlectrocintisme)demanireapproximative.CetypedapproximationestcourantenPS,etplusrareenEMmaisadjtutilisenVLF(parexempleBoukerboutetal.2003,Darnetetal.2004).

RalisationettraitementdunenouvelleexpriencedesuiviMTCDD(YassineAbdelfettah)+P.Sailhac+P.D.Matthey+E.Schill+H.Larnier+A.Chambodut+T.Tartrat+M.BanoLexpriencede suiviMTPSde2013nousapermisdemettreenvidenceun certainnombredelacunes en particulier concernant lalimentation et le stockage de donnes ayant conduit denombreuxgapsdans lessriestemporelles.NousvoulonsrefaireuneexpriencedesuiviMTPSauprintemps2014afindvalueraumieuxlessignaturesmagntotelluriquespossibleslorsdestestsdecirculationprvuesdans lespuitsduprojetECOGI.Enparticulier,notreexpriencede2013nousamontrquilestncessairedavoirunepersonnedisponibleetcomptenteassocielamaintenancedes stations demesure: nouspensonspour cela faire appel un chercheur expriment venantcomplternotregroupedetravail.IlsagitdeYassineAbdelfettah(depuis4ansenPostDocauCHYNde Neuchatel, CV cijoint). Il pourrait assurer le suivi logistique, puis le traitement des donnesacquiseslorsdecettenouvelleexprience.Lapriodedacquisitioniraitdavrilseptembre2014;lesitederfrenceseraitinstallproximitduWelschbruch,lessiteslocauxseraientceuxdOPS4etdeRITT,compltspardeuxautresinstallesauNordetauSud(ensupposantlutilisationdesdeuxstationsMETRONIXduparc INSU,de celleduKIT,decelleacquiseenpartie sur lescrditsLABEX2013,complteparune5imeacquisedanslecadreduprsentappelprojet).

ModlisationMT(etGravi)paruneapprochenumrique3DCDD(YassineAbdelfettah)+P.Sailhac+E.Schill+H.Larnier(+J.HindererpourlaGravi+col.ExterneP.TaritspourlaMT)SileprojetdustagedeMaster2deTimothTartratestlimituneapproximationdipolaire,nousavonsnanmoins lintentiondaborderaussi leproblmede lasensibilitdemanireplusraliste.Nous souhaitonsaussiconsidrerunmilieulectrique2D (issusdumodledeGeiermann&Schill2010reproduitcidessous)etabordernumriquement lemodledirect3Dpermettantdestimerplusprcisment lesperturbationsdutenseurdimpdance,ainsiquedephase,conscutivesdesmodifications de la distribution de conductivit en profondeur dans le voisinage de la failledHermersweiller.CettepartiemodlisationpourrabnficierdunecollaborationexterneauLABEX,avecPascalTarits (Univ.Brest),quiadjplusieursexpriencesdemodlisation3DenMT.Nousenvisageonscetravaildesensibilitde lamthodeMTassociunautreprojetsoumisauLABEX,danslequelonsintresseraaussilasensibilitgravimtrique.YassineAbdelfettah,djassociauprojetMT pour le suivi logistique et le traitement de lexprience de suiviMT de 2014, pourraitcomplter son activit en sinvestissant sur ce voletdemodlisationnumriqueMTGravi : ayantdjtravailleninversionjointegraviMTpendantsathseBrest,ilsembleavoirleprofilidalpourcontribuerpleintempsnotreprojet.Dupointdevufinancier,ceprojettantenpartenariatavecEvaSchillduKIT, ilestproposauLABEXdesoutenirunCDDdunanmitemps, lautremitempstantalorsprisenchargeparleKIT.

Fig:sectionlectrique issuede linversion2DdunprofilMTdans largiondeSoultzRittershoffen(Geiermann & Schill 2010); elle a t obtenue grce une rgularisation limitant la rsolutionspatiale;nanmoinsellemontrenanmoinsqu23kmdeprofondeur,onpeutobteniruneassezbonnesensibilitillustrantdesstructureslchelledequelquescentainesdemtres.

ParticipantsIPGS

Nom Prnom Emploiactuel Rle/Responsabilitdansleprojet

SAILHAC Pascal MdCUdS Porteurduprojet/Traitementetmodlisation

BANO Maksim MdCUdS LogistiquemissioncampagnemesuresMT

CHAMBODUT Aude PhysicienneAdjointe Observatoiremagntique,traitementetinterprtationgomagntique

LARNIER Hugo DoctorantFinancementMinistre

DveloppementsmthodologiquesenMT

MATTHEY PierreDaniel IRUdS Techniquedacquisition,complmentsdalimentationetconnectique

ParticipantsKIT(INE)

Nom Prnom Emploiactuel Rle/Responsabilitdansleprojet

SCHILL Eva Prof. Mthodesdesuivigophysique

Budget

Budgetduprojet20122013Soumis(Totalde111k)

Budgetduprojet20122013Ralisdec.2013(sur25kattribu)

A/Equipement2StationsMTMETRONIX 2x420004TRIDENTet1TORUS(1seulpourdveloppement)18000Batteries,connectiqueetautresaccessoires 20008lectrodesimpolarisables 1200Soustotalquipement 105200B/MissionTestsetinstallationdesstationsdesuivi 400CampagneMTJuin2013 1100CampagneMTOctobre2013 1100Soustotalmission 2600C/FormationStageM2R(HugoLarnierEOST3AetM2RSTU)1600Stageouvrier(2tudiants) 1600Soustotalformation 3200

TOTAL 111000

A/Equipement1StationsMTMETRONIXaveccalibrationdanciennessondesmagntiques(cofinancement)140201CR3000(acquisitionlectriqueBF) 2730Batteries,connectiqueetautresaccessoires 3130Soustotalquipement 19880B/MissionSuiviMTJuin/Juillet2013 170Soustotalmission 170C/FormationStageM2R(HugoLarnierEOST3AetM2RSTU)1710Soustotalformation 1710TOTAL 21760Reliquat 3240StageM2R(TimothTartratEOST3AetM2RSTU)174010lectrodesimpolarisables 1500

Budgetprvisionnelpour20132014

Lebudgetprvupourlapoursuiteduprojetcomportedeuxcolonnes:gaucheontrouventlesdpensesprvuessurlesreliquatsduprojet20122013(3.24k),droitesetrouventcellesprvuesdanslecadredunouvelappelprojetLABEX2014(59k)dont32.5kcorrespondentlemploidunchercheurcontractuelquitravailleraaussisurleprojetdesuivipargravimtriehybride.Onremarqueraquilseraaussifinanc50%parleKITafindetravaillerenpartenariat100%surnosprojetsdesuivigophysiqueMTGravi.

A/Equipement

1StationMTMETRONIX (sanssondemagntique) 22000

Batteries,connectiqueetautresaccessoires 3500

20lectrodesimpolarisables(10reliquat+10nouveau) 1500 1500

Soustotalquipement 1500 25000

B/Mission

Installationdesstationsdesuivi 500

Soustotalmission 500

C/Personnel

StageM2R(TimothLarnierEOST3AetM2RSTU)1740

CDDchercheurcontractuel1anmitemps(YassineAbdelfettah)(cottotal65000,50%KIT,50%LABEX)* 32500

Soustotalpersonnel 1740 32500

TOTAL(reliquat) 3.24k

TOTAL(appelprojet20132014) 59.00k

*:CDDencommunavecleprojetdesuivitemporelpargravimtriehybridedeJ.Hinderer

Rfrencesbibliographiques(auteurengras:porteurduprsentprojet)

Bordes, C., Etude exprimentale des phnomnes transitoires sismolectromagntiques, thse de doctorat,UniversitJosephFourier,soutenuele15Dec.2005,182p.

Boukerbout,H.,G.Gibert,P.Sailhac, Identificationofsourcesofpotentialfieldswiththecontinuouswavelettransform:applicationtoVLFdata,Geophys.Res.Lett.(2003),95101.

Darnet,M.,CaractrisationetsuividecirculationsdefluidesparlamesuredePotentielsSpontans(PS),Thsesdedoctorat,UniversitLouisPasteur,soutenuele24Nov.2003.204p.

Darnet,M.,P.Sailhac,G.Marquis,Geophysicalinvestigationofantiqueironfurnaces:insightsfrommodellingmagneticandVLFdata,NearSurfaceGeophysics(2004),95101.

Darnet, M., G. Marquis, P. Sailhac, Hydraulic stimulation of geothermal reservoirs: fluid flow, electricpotentialandmicroseismicityrelationships,Geophys.J.Int.(2006),doi:10.1111/j.1365246X.2006.03026.x

Falgas,E.,G.Marquis,P.Sailhac,J.Ledo,P.Queralt,M.Bhaegel,AquiferimagingusingCSAMTandERT,EAGENearSurfaceConf.,Palermo,Ext.Abstr.P038,2005.

Geiermann, J., E. Schill, 2D Magnetotellurics at the geothermal site at SoultzsousForts: Resistivitydistributiontoabout3000mdepth,C.R.Geoscience342(2010)587599.

HaartsenM.W., S.R.Pride,Electroseismicwaves frompoint sources in layeredmedia, J.Geophys.Res.102(1997)24,74524,769.

LarnierH.,Apportdedonnesdobservatoirepourlinterprtationdesondagesmagntotelluriques.RapportdestageMaster2STE,UniversitdeStrasbourg,2013,20p.

Marquis,G.,M.Darnet, P. Sailhac,A.K. Singh,A.Grard, Surface selfpotential variations induced bydeephydraulicstimulation:anexamplefromtheSoultzHDRsite.Geophys.Res.Lett.29(2002)n14,7.17.4.

Michel S., J. Zlotnicki, Selfpotential and magnetic surveying of La Fournaise volcano (Runion Island):Correlationswithfaulting,fluidcirculationanderuption,J.Geophys.Res.103(1998)17,84517,857.

PeakockJ.R.,SThiel,G.S.Heinson,P.Ried,Timelapsemagnetotelluricmonitoringofanenhancedgeothermalsystem,Geophysics78(2012)B121130.

Sailhac,P.,H.LarnierP.D.Matthey,E.Schill,A.Chambodut,TestinggeothermalmonitoringusingMTandSPatRittershoffen.2ndEuropeanGeothermalWorkshop,2425oct.2013Strasbourg,Extendedabstract4p.

Spichak, V.,O. Zakharova, The application of an indirect electromagnetic geothermometer to temperatureextrapolationindepth,GeophysicalProspecting57(2009)653664.

Strahser,M.,L. Jouniaux,P.Sailhac,P.D.Matthey,M.Zillmer,Dependenceofseismoelectricamplitudesonwatercontent,Geophys.J.Int.187(2011)13781392

Wawrzyniak,P.,Suivitemporelmagntotellurique:applicationunrservoirvolcanique.Thsesdedoctorat,UniversitdeStrasbourg.Soutenuele9Mai2011.146p

Wawrzyniak, P., P. Sailhac, G.Marquis, Robust error onMagnetoTelluric impedance estimates. Geophys.Prospect.,souspresse,doi:10.1111/j.13652478.2012.01094.x

Zlotnicki J., Y. Sasai, P. Yvetot, Y.Nishida,M.Uyeshima, F. Fauquet,H.Utada, Y. Takahashi,G.Donnadieu,Resistivityandselfpotentialchangesassociatedwithvolcanicactivity:TheJuly8,2000Miyakejimaeruption(Japan),EarthPlan.Sci.Lett.206(2003)139154.

CV- Yassine ABDELFETTAH, 12/2013 1

Dr. Yassine ABDELFETTAH Geophysicist

Algerian Address Matthias Hipp 1A, 2000 Neuchtel, Switzerland. 35 year old Contacts Office; +41 (0) 32 718 26 28 Married Mobil; +41 (0) 76 331 92 04 3 children Email; yassine.abdelfettah@unine.ch

MAIN TOPICS

Magnetotelluric/AMT, gravity, VLF, GPR, Seismic, VSP Geophysical data acquisition, processing and interpretation. Numerical modeling and inversion. Software and algorithm development Joint inversion techniques

PERSONNAL SKILLS AND COMPETANCES

Research

Experienced in geophysical data acquisition, data processing, numerical modeling, inversion and interpretation

EM methods Magnetotelluric (MT/AMT) experienced from filed data acquisition to interpretation including FwD modeling and inversion, using mainly WinGLink and Tarit's code GPR experienced in data modeling and interpretation VLF and RMT experienced from data acquisition to interpretation Electrical method academic knowledge from data acquisition to interpretation

Seismic Reflexion and Refraction interpretation and academic knowledge in data processing Vertical Seismic Profiling academic knowledge from data processing to interpretation

Gravimetry Experienced in both academic and industrial from data field acquisition, processing, FwD modeling, inversion, post-processing and interpretation

Numerical Strong experience in R&D numerical modeling, mainly to develop adequate tools to be modeling at the state-of-the-art. In the last five years, I developed important numerical codes as

PGraviFor3D code which allows to achieve accurate gravity data processing including accurate topography correction using mainly two different Digital Elevation Models GravFEM code which allows to achieve a 3D gravity forward modeling for any 3D geological model using Finites Elements Meshing GravBWF code. It is used in the post-processing and interpretation of the Bouguer anomaly to get pseudo-tomography with depth MT and Gravity joint inversion code which allows achieving inversion of both data set in the same inversion run and remove the ambiguities meet during interpretation

Computing Linux/Unix, Windows skills Fortran 77, 90-95, Shell, Matlab, Pascal (basic)

WinGLink, Mapros, gmsh, Generic Mapping Tool (GMT), Office Pack, LibreOffice, LaTex, Inkscape, Adobe Illustrator, Gimp, ArcGis (basic), and others

CV- Yassine ABDELFETTAH, 12/2013 2

Languages English Good, French Fluent, Arabic Fluent, Kabyle Mother language

Industrial Commission with Swisstopo (2013) ~14'000.00 CHF Collaboration Commission with Geo-Energie Suisse (2013) ~12'000.00 CHF. Teaching

Since 2009, I teach geophysical exploration techniques and supervise numerous Masters and PhD students

Courses I teach mainly seismic (reflexion, refraction, VSP), EM-methods (MT/AMT, RMT, VLF) and gravimetry used mainly for deep geothermal exploration PhD Mainly the geophysical part; Luca Guglielmetti (2011), Paul Baillieux (2012), Pierrick supervision Altwegg (current) and Ait Ouali Abdelkader (current).

MS supervised Di-Tommaso Gennaro (2010) and Pascal Kuhn (2012)

EDUCATION

7/1012 Present Senior research fellow in Geophysics at the Hydrogeological and Geothermal Centre CHYN working at Geothermal laboratory (CHYN), University of Neuchtel, Switzerland.

7/2009 6/2012 Post doctoral at the Hydrogeological and Geothermal Centre (CHYN) worked with Geothermal group with Pr. E. Schill, University of Neuchtel, Switzerland.

2005 6/2009 PhD in Geophysics at the European Institute for Marine Studies, Brest, France. Supervisors: Pr. P. Tarits, Dr. M. Maia and Dr. S. Hautot. Title: Joint inversion of Magnetotelluric and gravity data: Geophysical application of crust and upper mantle imaging.

2004 2005 DEA degree in Geophysics at the Institute of Globe Physics (EOST), Strasbourg, France. Supervisor: Dr. M. Bano. Title: Study and modeling of the Ground Penetrating Radar response according to the water content.

1998 2003 Engineer in Geophysics at Hydrocarbon and chemical Institute of Boumerds, Algeria. Supervisors: Pr. M. Djeddi and F. Babaia. Title: P-P and P-S images reconstruction from Vertical Seismic Profiling with 3 components. The modeling technique used is the ray tracing method.

EXPERIENCE Worked more than 8 years with multidisciplinary geoscientist groups

More than 8 years in modeling and software development

3D gravity forward modeling using finite element meshing, Fortran 90; 2012-2013 3D gravity forward modeling using finite difference meshing, Fortran 90; 2008-2011 3D constrained gravity inversion, Fortran 90; 2008-2011 PGraviFor3D code; improved version of GraviFor3D code, Fortran 90; 2012 GraviFor3D code; accurate gravity data correction using 2 digital elevation models; 2010 GraviBWF code to remove gravity regional trend, used also in data post-processing; Shell; 2010-2013 2-D joint inversion of magnetotelluric and gravity data code, Fortran 77-90; 2008 1-D and 2D magnetotelluric modeling and inversion in Fortran 77-90; 2007 2-D and 3-D gravity data modeling and inversion, in Fortran 90; 2007

CV- Yassine ABDELFETTAH, 12/2013 3

Ground Penetrating Radar modeling (GPR) according to water saturation, in Matlab; 2005 P-P and P-S images reconstruction for Vertical Seismic Profiling by ray tracing and one-dimensional

reflectivity modeling in Fortran 77; 2003 Write in Shell many visualization scripts used in GMT; 2005-2013

Field Experience

Gravity data acquisition in Val-de Ruz, Neuchtel, Switzerland; 2012 Magnetotelluric data acquisition in Venadeo, Italy; 2011 Magnetotelluric and Gravity data acquisition in Switzerland; 2009-2010 VLF and RMT data acquisition in Black Forest, Germany; 2009 Magnetotelluric and Gravity data acquisition in Turkana, Kenya for 1 month; 2006 Seismic data acquisition in Algerian Sahara for 4 months; 2003

Data processing, post-processing and interpretation

Gravity data post-processing and interpretation for industrial project to characterize density heterogeneities in the Crystalline basement of Switzerland Switzerland

Gravity data processing and interpretation for data acquired in Turkana, Kenya; 2007-2009 Gravity data processing, FwD modeling and 3D inversion for data acquired in Neuchtel, Switzerland

during GeoNe geothermal project; 2009-2011 2D inversion for Magnetotelluric data acquired in Turkana, Kenya; 2007-2009 Magnetotelluric data processing, FwD modeling and 2D inversion for data acquired in Argentera

massif area, Italy; 2011 Gravity data processing, FwD modeling, 3D inversion and post-processing for data acquired in

Argentera massif area, Italy, 2010-2011 Data filtering and interpretation for VLF data acquired in Black Forest, Germany; 2009-2010 Sub-basalt imaging using seismic, magnetotelluric and gravity joint interpretation for data acquired

in Faroe island, 2005-2006

PEER-REVIEW PAPER, PROCEEDING, ABSTRACT, REPORT

Peer-review papers Yassine Abdelfettah, Jean-Jacques Tiercelin, Pascal Tarits & Sophie Hautot. Subsurface structure and stratigraphy of the

northwest end of the Turkana Basin, Northern Kenya Rift, as revealed by magnetotellurics and gravity joint inversion. Submitted to Journal of African Earth Sciences.

Yassine Abdelfettah, Pascal Tarits , Sophie Hautot , Marcia Maia & Jean-Jacques Tiercelin. Lithosphere structures under the Turkana rift basin, northern Kenya, as revealed by magnetotelluric and gravity inversions. Submitted to Journal of Geophysical Research, 2013

Guglielmetti, L., Comina, C., Abdelfettah, Y., Schill, E., Mandrone, G.. Integration of 3D geological modeling and gravity surveys for geothermal prospection in an Alpine Region, Tectonophysics, doi: 10.1016/j.tecto.2013.07.012, 2013

Mauri Guillaume, Negro Francois, Abdelfettah Yassine, Schill Eva, Vuataz Francois-David & Altwegg Pierrick, 2013. Exploration of deep low enthalpy geothermal reservoirs in the Swiss Jura Combination of 3D geological modeling and gravimetric analysis. Accepted in Geothermics

Jean-Jacques Tiercelin, Jean-Luc Potdevin, Peter Kinyua Thuo, Yassine Abdelfettah, Mathieu Schuster, Sylvie Bourquin, Herv Bellon, Jean-Philippe Clment, Herv Guillou, Thierry Nalpas, Gilles Ruffet. Stratigraphy, sedimentology and diagenetic evolution of the Lapur Sandstone in northern Kenya: Implications for oil exploration of the Meso-Cenozoic Turkana depression, Journal of African Earth Sciences, 7172, pp 43-79, 2012

CV- Yassine ABDELFETTAH, 12/2013 4

Abdelfettah Yassine. Inversion conjointe des donnes magntotelluriques et gravimtriques: Application limagerie gophysique crustale et mantellique. Thse, Universit de Brest, France, 2009

Peer-review papers in preparation and/or ready to submission Abdelfettah Y., E. Schill & P. Kuhn. Characterization of geothermally relevant inhomogeneities in crystalline basement

using filter and gravity forward modeling: an example from the Permo-Carboniferous grabens in Switzerland. 95 % of progression

Paul Baillieux, Eva Schill, Yassine Abdelfettah & Chrystel Dezayes. Insights on the localization of temperature anomalies in Soultz area from geophysical and slip and dilation tendency analyses. 95% of progression

Altwegg Pierrick, Schill Eva, Abdelfettah Yassine, Radogna Pier-Vittorio & Mauri Guillaume. Fault zone porosity determination by joint interpretation of 3D seismic and gravity data for geothermal exploration - application in the St. Gallen geothermal project. 95 % of progression

Kuhn P., Abdelfettah Y. & Schill E.. Exploration of potential basement structures for geothermal using geology, seismic and gravity joint interpretation in Jura area. 50 % of progression

Proceedings Kuhn P., Abdelfettah Y. & Schill E.. 3D geological modelling of the Northern Swiss Permo-Carboniferous basin using

gravity forward modeling, Europeann Geotharmal Workshop, Strasbourg France, 2013. Abdelfettah Y. & Schill E. Exploration of geothermally relevant structures in the crystalline basement of Switzerland using

gravity constrained by seismic data. Proceed. European Geothermal Congress, EGC 2013, Pisa, 9 pp, ISBN 978-2-8052-0226-1, 2013.

Guglielmetti L., Negro F., Mauri G., Vuataz F.-D., Abdelfettah Y., Clerc N., Giroud N., Marguet L. & Schill E. GeoNE: an integrated project for the exploration of low enthalpy deep aquifers in the canton of Neuchatel, western Switzerland. Proceed. European Geothermal Congress, EGC 2013, Pisa, 12 pp, 2013.

Abdelfettah Yassine & Eva Schill. Delineation of geothermally relevant Paleozoic graben structures in the crystalline basement of Switzerland using gravity. Society of Exploration Geophysics meeting, Proceeding, Istanbul, 2012.

Comina C., L. Guglielmetti, Y. Abdelfettah, E. Schill and G. Mandrone. Gravity signature of geothermal hot-spots in the Argentera Massif. Italian national geophysical conference (GNGTS), Trieste, Italy, 2012

Baillieux P., E. Schill, L. Moresi, Y. Abdelfettah, C. Dezayes. Investigation of Natural Permeability in Graben Systems: Soultz EGS Site (France): Proceedings, Thirty-Seventh Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, SGP-TR-194, 2012

Schill E., Altwegg P., Abdelfettah Y. & Radogna P.V., 2012. Exploration of structures and determination of porosity changes to the basement. Int. Geothermal Conf. Freiburg, Germany, 2012

Schill E. , L. Guglielmetti, P. Klingler, Y. Abdelfettah and A. Alcolea. The Role of Structural Changes for Geothermal Projects in the Area of Basel. Proceedings, 37th Workshop on Geothermal Reservoir Engineering, Stanford University (USA), 2012

Luca Guglielmetti, Yassine Abdelfettah, Cesare Comina, Eva Schill, and Giuseppe Mandrone. Gravimetric Survey to Detect Geological Structures Involved in Thermal Water Circulation in the Italian Western Alps. GRC Transactions, Vol. 35, 2011

Guglielmetti L., Comina C., Mandrone G., Abdelfettah Y., Schill E.. Gravity surveys for the identification of thermal anomalies a case history in the Argentera Massif. EPITOME (ISSN:1972-1552), pp. 99, Vol. 4, GeoItalia 2011, VIII Forum italiano di Scienze della Terra, Torino, Italia, 2011

Guglielmetti L., Abdelfettah Y., Comina C., Schill E., Mandrone G.. Passive geophysical methods for geothermal exploration in the External Crystalline Argentera Massif of the Western Italian Alps: Gravity and Magnetotelluric. Proceedings, European Geosciences Union General Assembly, Vienna, Austria, 2011

Schill E., T. Kohl, J. Geiermann, C. Baujard, S. Koch, H. Deckert, G. Munoz, Y. Abdelfettah. Multi-disciplinary prospection approach for EGS reservoirs in the german variscian basement. Proceedings, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, SGP-TR-191 January 31 - February 2, 2011

Tarits P., Y. Abdelfettah and S. Hautot. A joint inversion approach for magnetotelluric using gravity and seismic data. Society of Exploration Geophysicists, Houston 2009

Abdelfettah Y., P. Tarits and S. Hautot. Joint inversion of magnetotelluric and gravity data: 2-D methodology and synthetic examples. IAGA WG 1.2 on Electromagnetic Induction in the Earth, 19th Workshop Beijing, China, October 23-29, 2008

Abstracts Abdelfettah Y., Schill E. & Kuhn P.. Delimitation and characterization of geothermally relevant Permo-Carboniferious

graben in the Swiss Crystalline basement, 11th Swiss Geoscience Meeting, Lausanne 2013

CV- Yassine ABDELFETTAH, 12/2013 5

Kuhn Pascal, Abdelfettah Y, Mauri G., Schill E. & Vuataz F. Improvement of the regional 3D modeling of deep geological structures with gravity: A case study in the Neuchatel Jura Mountains, 11th Swiss Geoscience Meeting, Lausanne 2013

Abdelfettah Y. & E. Schill. PGraviFor3D, Parallel Fortran code to compute accurate topography gravity effect using a spherical forward modeling, AGU Fall Meeting, 2012

Tiercelin J-J., Y. Abdelfettah, P. Tarits & S. Hautot. Structures and subsurface stratigraphy of the Turkana and Kachoda basins, Northern Kenya, revealed by MT and gravity joint inversion, AGU Fall Meeting, 2012

Abdelfettah Y. & Schill E. Delineation of the Permo-Carboniferous graben in the crystalline basement of Switzerland using a gravity, 10th Swiss Geoscience Meeting, Berne 2012

Mauri G., Negro F., Abdelfettah Y., Schill E. & Vuataz F-D. Deep geothermal exploration of low enthalpy reservoir in the Neuchtel Jura (GeoNE project) Use of gravity survey to validate and improve 3D geological models, 10th Swiss Geoscience Meeting, Berne 2012

Abdelfettah Y., Mauri G., Kuhn P., Schill E. & Vuataz F-D.. Investigation of deep geological structures in the northwest part of Canton of Neuchatel using a combination of gravity and 3D geological model, 10th Swiss Geoscience Meeting, Berne 2012

Di Tommaso G., Abdelfettah Y. & Schill E.. VLF Measurement in the cristallin area, new survey in the EGS research project in Black Forest, 10th Swiss Geoscience Meeting, Berne 2012

Baillieux P., Schill E., Abdelfettah Y. & Dezayes C..Localization of temperature anomalies in Soultz area (Upper Rhine Graben): insights from gravity, magnetics and slip and dilation tendency analysis, 10th Swiss Geoscience Meeting, Berne 2012

Altwegg P., Schill E. & Abdelfettah Y.. Fault zone porosity determination by joint interpretation of 3D seismic and gravity data for geothermal exploration - application in the St. Gallen geothermal project, 10th Swiss Geoscience Meeting, Berne 2012

Abdelfettah Yassine & Schill Eva. Accurate gravity data correction and 3D gravity forward modeling, 9th Swiss Geoscience Meeting, Zurich 2011

Mauri G., Negro F., Abdelfettah Y., Vuataz F-D., and Schill E.. Multi-disciplinary study for the exploration of deep low enthalpy geothermal reservoirs-Part II, Neuchtel, Switzerland, AGU Fall Meeting, 2011

Mauri G., Negro F., Abdelfettah Y., Vuataz F-D., and Schill E.. Multi-disciplinary study for the exploration of deep low enthalpy geothermal reservoirs-Part I, Neuchtel, Switzerland, 9th Swiss Geosciences Meeting, Zurich, 2011

Luca Guglielmetti, Giuseppe Mandrone, Eva Schill, Adele Manzella, Yassine Abdelfettah. Preliminary gravity and magnetotelluric results in the Argentera Massif, southwestern italina Alps. European Geothermal PhD Day, Reykjavk, 2011

Abdelfettah Yassine, Pascal Tarits, Sophie Hautot, Jean Jacques Tiercelin & Marcia Maia. Sub-basalt basin imaging in Turkana area, northern Kenya by joint inversion of magnetotelluric and gravity data, IAGA WG 1.2 on Electromagnetic Induction in the Earth, 20th Workshop Giza, Egypt, September 18-24, 2010.

Baillieux Paul, Eva Schill, Chrystel Dezayes and Yassine Abdelfettah. 3D regional model of the European geothermal test site Soultz-sous-forts, France, European Geothermal PhD Day, GFZ-Potsdam, 2010

Schill Eva, Abdelfettah Yassine, Altwegg Pierrik & Baillieux Paul. Characterization of geothermal reservoirs using 3D geological modeling and gravity. 7th Swiss Geosciences meeting, November 2009.

Abdelfettah Y., P. Tarits, M. Maia and S. Hautot. Crust and upper mantle imaging of Turkana basin by 2-D joint inversion of magnetotelluric and gravity data, IAGA WG 1.2 on Electromagnetic Induction in the Earth, 19th Workshop Beijing, China, October 23-29, 2008

Tarits, P., S. Hautot, J.F. D'Eu, Y. Abdelfettah, and M. Maia, Multiparametric modeling for sub-basalt imaging, IAGA WG 1.2 on Electromagnetic Induction in the Earth, 18th Workshop, El Vendrell, Spain, September 17-23, 2006

Scientific Reports Abdelfettah Yassine, 2013. tude gravimtrique pour dtecter la prsence de fosss permo-carbonifres sur le site

dinvestigation gothermique de Haute-Sorne. Rapport Final pour Geo-Energie Suisse, Rapport CREGE 13-12, 39 pp. Abdelfettah Yassine, 2013. Utilisation de la gravimtrie pour explorer et caractriser la prsence d'anomalies de densit dans

le socle Cristallin, sous le Bassin Molassique Suisse. Rapport final. Rapport CHYN 2013-07 pour le Service Gologique National Swisstopo, p27.

CREGE Laboratoire de Gothermie, 2012. Programme GeoNE - Dveloppement de la gothermie profonde dans le canton de Neuchtel. Rapport final de la Phase 1. Rapport CREGE 12-02 pour le Service de lnergie et de lenvironnement et pour le Service de lconomie, Neuchtel.

Altwegg P., Schill E., Abdelfettah Y. & Radogna P., 2012. Fault zone porosity determination by joint interpretation of 3D seismic and gravity data - Intermediate report, Neuchtel. 26 pp.

Altwegg P., E. Schill, P-V Radogna, Y. Abdelfettah and G. Mauri. Geothermal project St Gallen: Joint interpretation of 3D seismic and gravity data, Neuchtel, pp-58, 2011

Abdelfettah Yassine, Eva Schill. The Magnetotelluric measurement in Wallis area. Final repport, COGEAR Project, 2010