[1] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
[2] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France
[3] Univ Valencia, CSIC, IFIC, Inst Fis Corpuscular, Valencia 46071, Spain
[4] Inst Univ Technol Colmar, GRPHE, F-68008 Colmar, France
[5] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy
[6] Tech Univ Catalonia, Lab Appl Bioacoust, Barcelona 08800, Spain
[7] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy
[8] Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany
[9] CEA Saclay, Direct Sci Mat, Inst Rech Lois Fondamentales Univers, Serv Elect Detecteurs & Informat, F-91191 Gif Sur Yvette, France
[10] Univ Politecn Valencia, Inst Invest Gestio Integrada Zones Costaneres IGI, Gandia 46730, Spain
[11] Nikhef, Amsterdam, Netherlands
[12] Univ Paris 07, CEA, Observ Paris, CNRS,APC,Lab AstroParticule & Cosmol,UMR 7164, F-75205 Paris 13, France
[13] LAM, F-13388 Marseille 13, France
[14] Univ Bologna, Dipartimento Fis, I-40127 Bologna, Italy
[15] Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy
[16] CEA Saclay, Direct Sci Mat, Inst Rech Lois Fondamentales Univers, Serv Phys Particules, F-91191 Gif Sur Yvette, France
[17] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy
[18] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[19] Ist Nazl Fis Nucl, Sez Catania, I-95125 Catania, Italy
[20] Univ Blaise Pascal, Phys Corpusculaire Lab, CNRS, IN2P3, Clermont Ferrand, France
[21] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy
[22] Univ Nice Sophia Antipolis, CNRS, INSU, IRD,Observ Cote dAzur, F-06235 Villefranche Sur Mer, France
[23] Univ Paris 06, F-06235 Villefranche Sur Mer, France
[24] IFREMER, Ctr Brest, F-29280 Plouzane, France
[25] Ist Nazl Fis Nucl, LNS, I-95123 Catania, Italy
[26] CNRS, COM, INSU, F-13288 Marseille 9, France
[27] Univ Mediterranee, F-13288 Marseille 9, France
[28] Univ Paris 11, F-91405 Orsay, France
[29] Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands
[30] Ctr Toulon La Seyne Sur Mer, IFREMER, F-83500 La Seyne Sur Mer, France
[31] CEA Saclay, Direct Sci Mat, Inst Rech Lois Fondamentales Univers, Serv Astrophys, F-91191 Gif Sur Yvette, France
[32] Univ Strasbourg, IPHC, F-67037 Strasbourg 2, France
[33] CNRS, IN2P3, F-67037 Strasbourg 2, France
[34] Royal Netherlands Inst Sea Res NIOZ, NL-1797 SZ T Horntje, Texel, Netherlands
[35] Univ Amsterdam, Inst Hoge Energiefys, NL-1098 XG Amsterdam, Netherlands
[36] Dr Remeis Sternwarte Bamberg, D-96049 Bamberg, Germany
[37] Univ Utrecht, Fac Betawetenschappen, NL-3584 CC Utrecht, Netherlands
[38] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
[39] Univ Catania, Dipartimento Fis & Astron, I-95125 Catania, Italy
[40] ITEP, Moscow 117218, Russia
[41] Univ Wisconsin, Madison, WI 53715 USA
[42] Inst Space Sci, R-77125 Bucharest, Magurele, Romania
[43] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[44] Leiden Univ, NL-2300 RA Leiden, Netherlands