東北脊梁山地合同地震観測における衛星通信測システムについて
Contents
1. 3 6 Indoor Unit RFE Outdoor Unit 9 6kbps 1 200 75cm 9 6kbps 128kbps 1 8 2 4m 512kbps2. 6
3. 3 1 2 3 1 3
4. ON OFF The telemetry system using JC SAT3 for the joint observation on Tohoku mountain area Makoto KOIZUMI Hiroo WADA Norio HIRANO Kiyoshi ITO Yasuhiro UMEDA Ryohei NISHIDA and Hiroshi NISHIYAMA Department of Civil Engineering Tottori Univercity Synopsis Joint Seismological observation by Japan university was took place on Tohoku mountain area to obtain the high resolution crustal structure and the depth variation of the seismogenic zone 80 observation stations were arranged within a area of 50km in east west and 100km in north south Seismic data from each station are sent to the ground relay station via communication satellite JC SAT3 The summarized data of relay station are widely distributed to any user via the same satellite We describe for this new telemetry system and some problems such as a pause of data transmission Keywords seismological observation telemetring system satellite communication
5. 2 14GHz 1 6Mbps 1 100Hz 20 3000 12GHz 9 6kbps Pig 4 Table 1 Observation points and channel numbers Station VSAT Lat Lon Alttude Channel IDU ODU Code de m KT43 39 130 140 660 280 8738
6. NTT NTT NTT NTT 1997 97 vo19 No3 ppi2 20 1997 1996 No2 P22
7. 2 50km 100km 50 1 1996 11 M5 9 S 97 9 10 1 Fig 1 6 3 6 3 VSAT 3
8. 4 3 X99 311 1 320 3 320X3 960 s 9600bps 9600bps 8 1200 s 24 3 16 2 1 212 1 220 5 1 1 6 4 MB
9. 9 9 7 9 TV JC SAT3 24
10. Fig 2 100Hz 22 GPS win 6 NO43 68 N044 NO47 NO48 70 1 N049 NO50 19 141 Fig 1 joint seismological observation from 1997 to 1998 in Tohoku area The surveys of crustal structure by using the artificial explosions are took place on the thick line After Hasegawa et al 1997 39 00 N np EL 140 4 E 140 8 E Fig 2 Distribution of master and slave observation stations
11. 6 a win RIDE 07 0a 2 P EN 6 27 RS BS MO49 9 H HH NN B KT44 V H N 3 OI DUD Sp i Gr Ur GS hl sl oh 8739 KT43 N MM WW 4 NO FILTER 87S8 RT43 E 07 WW 14 9 CE KT44 V WW EE CS oday 73C ERT44 N MAU Se 192 NO FTLTER 873D KT44 E 0 PT LETIHar COPY OU FH MM LM 1 MM i 5 B 5 H 1 NE EE EE GE EE ER 0 2 Flg 5 An Example of seismic wave data recieved at Kamitakara Observatory Patial pause of the data transmission can be seen 5 10 10 N044 0DU N047 N047 NO048 NTT
12. 41 B 1 10 4 Annuals of Disas Prev Res Inst Kyoto Univ No 41 B 1 1998 1997 10 50km 100km 80 1
13. AT 8 10 12 2 1 DTR OFF 2 SDLC 3 0dbm 15dbm 4 AS400 OFF 5 6 OFF 7 RTS ON 8 9 OFF 10 11 12 13 14 15 CD DSR OFF 16 4 2 ATS 1 amp F 2 BAO 3 amp E2 4 MB 9600 5 SB 9600 6 F0 19 2Kbps VO 7 S18 0
14. 8 S19 0 9 amp W0O0 10 L5 11 L7 9 6Kbps 4 SW5 1 DTR ON 2 SDLC 3 0dbm 15dbm AS4000FF OFF RTS ON Oo NO OO Rk OFF 10 11 12 13 9 6Kbps 14 9 6Kbps 15 CD DSR ON 16 4 2 SW5
15. 97 9 10 1 2 1 Station KT43 KT44 KT47 KT48 KT4S KTSQO Station Fig 3 Observation system at master and sla ve station Fig 3 KT43 KT47 KT49 KT44 KT48 KT50 3 GPS A D LT8500 U D 320 N S 313 E W 315 V m s 100Hz 22 12dB A D 7 629 10E 6 V LSB
16. 873A KT44 328 39 086 140 724 400 873B 873D 007 KT47 39 007 140 662 350 873E 8740 KT48 329 39 061 140 590 235 8741 8743 008 KT49 39 037 140 415 235 8744 8746 KTS0 327 38 949 140 368 610 8747 8749 058 2 Observatory or Center Sub Relay Station ER Fig 4 Data flow chart on the telemetry system by JC SAT3 4 Fig 5 10 27 KT43 KT44 3 1 3 2 4 100Hz 24 win 1 10
17. within a circle in Pig 1 1Hz 6 75cm 1 m 2m Photo 1 4C Photo 1 Parabolic Antenna at a station 3
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