retrieval of seismic data recorded on open-reel-type ... · @ , b6c de˚fz˘ m ›-fi #: ˙uy #567...

7
ῐ῍ 腤腩 腛腣腦腥 腚腡 腏腀腕腘腖腀腗腜腟腙腒腀腕 腈腨腢腃腍腆 腓腀腑腉腞腢腅腌腓腔腎腐腇腉腧腝 膰臼膞 臩膹膮臠膭臟膹膮 膾膓臼膞臼膞膑膠膱膞膹膮膗 臋膗膞膭臟膹膮臠 膰臼膞 臩膹膮臠 膾膓臼膞臦 膶膤 腶膋腷腀 膻臼膴膷臐膨腶膋 腷腀 腙腅腂腔腢 腇臲 腋腧腔腂腐腇 腊腧腢 腆腓腔 臩膡臶腚 膵膪 腻腀腷腚 臼腕腁腦 腙腛 膯腋腧腐 臻腨腥腚臵 腖腌腔 腐腡腙 臕腖腌腔腛臼 腚膪膔膄腻腬腫腕腁腦腮腀膁膋 膊腀腰腴腺腀腲膅膋腙臱臷腋腧腐腼膆腭膀腇 膍腋腧腐 膇腀膈膴臖膩腺腀膁 腘腗腙 臸腋腧腐 腌腆腌 腊腧腢臀臣腌腐臤臅腙臁膟 臰腧腘腗腚 膔臵 腚臨 腖腖腢腙 腋腧腐 腘腗腚膄腻腬 腕腈腘腉腘腦膖 臬腇腁腦 腊腚腣腃腙 腫腛膽臍臒腨腧腘腉腘腒腐 臸腋腧腐腻腀腷腚臹 腋腧腔腂腦腻腀腷腛腂腎腧 腠臞腍腊腖腇腕腈腘腉腘腦膖 腉腛 腲腴腺膃腩 腧膟腄腦臌腙 腘腗腚膽臍 腠臇腠 臬腇臼腈腂腐腡 膨臎腇臑腒腔腂腦腃腑腙膫臝腘腻腀腷 臺腙 膟腋腧腔腂腦腇 臕腚 腚腟腟 臸腋 腩臘腥臞腌腔腅腉 腇腁腦 腧腔腂腦腻腀腷腢臢腘腉腘腂 腠臡腈 膡臶膭臟腚臨 腙腣腥臄腸腭腽膂腹腰膉膋腳腆腓 腌腐臵 膧腋腧腔腂腦 腻腀腷腚膪 腚膡臶腻腀腷腇膌至腙 腝腔 膎腙 腤腧腦腣 腂腤腧腐膂腾腱膋腛腞腖腪腗腚膨膣腕腛膽臍膙 腌腔腅腤 腃腙腘腒腐 腊腚腣腃腘臊臧腚臗腚臄腂膡臶腻腀腷腚膜臮 膥腙 膯腋腧腐膨膣腢臹腂腖臓腨腧腦 腟腐 腆腤腛 臹腉腚臧腐腘 膺腇 腤腧腦腇 膦膢腙 臉臭腍腦腐腡腚臵 腛膝臼膞腚臼膴膷臐膨腶膋腷腀腘腗腙 腨腐腒腔 臯腋腧腐膚膯腚膪 腙腢膫臝腘臦 腇膒腋腧腔 腋腧腔腂腐腇 腏腧腢膽臍腛 膯腋腧腦膳臂腙腁腦 腂腦 腄腜 腛腊腧腟腕腙 腚致 臈臏腕臃 腘腨腧腐臜 膡臶腚腻腀腷腩 腂腔 膘臏臬 臩腚 膬腚膄腯腾腵膃腖膿 臫腚臕膢 膕腚膼膐腙腓腂腔 腝腐 腋腤腙腊腚臙 腩致 臏腚 臩膡臶腙腣腦 腣腥 膦膢腙腨腐腒腐腻腀腷腙 腌腣腃腖臔腠腐 臩腻腀腷腛 臩膹膮臠膘臏 膹膮自臨腶膋腷腀腙腅腂腔 臸腋腧腔腂腐腢腚 腚臉臭 腂腤腧腔腂腐膂腾腱膋腛膥腙 腦腸 腕腍 腰腵 腠腞 腴腮 腳腱 腳腱 腝腲 腳腱 腫腍 腇腚 腗腁 腇腚 腊腱 1 No. Technical Research Report, Earthquake Research Institute, University of Tokyo, No. , pp. , . * ** *** * Graduate School of Environmental Studies, Nagoya University, ** National Research Institute for Earth Science and Disaster Prevention, *** Earthquake Research Institute, University of Tokyo. MT UNIX MT MT MT MT CD MT MT MT Nakano MT MT Key words : Magnetic tape, MT, Seismic record, Data retrieval, Data format et al., Abstract Open-reel-type magnetic tapes (MT) were commonly used to record seismic and other observation data more than ten years ago. Although seismic data recorded on MT may contain useful information about past seismic activities, it becomes di cult to retrieve data from MT recently since the devices used to read and write MT have been disposed and replaced by recent higher capacity and portable recording devices. In this paper, we report detailed descriptions how to retrieve Kusatsu-Shirane seismic data recorded on MT using the existing devices and to decipher the data format without a priori information, which may be useful to retrieve MT data used in other seismic networks. Masaru NAKANO*, Hiroyuki KUMAGAI** and Jun OIKAWA*** Retrieval of Seismic Data Recorded on Open-reel-type Magnetic Tapes (MT) by Using Existing Devices * ** *** MT 3 +1 ,**- 3 + 1 ,**- ,**- 2 ,2 ,**- +* ,* ,*** +33, +332 $

Upload: others

Post on 11-Nov-2020

2 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Retrieval of Seismic Data Recorded on Open-reel-type ... · @ , b6c de˚fZ˘ M ›-fi #: ˙UY #567 …fl|˚c 567 WZ˘ DE˚f #567 q+,M˘ •o Z˘ › ˙L˝˘*DE ˇˆM F* 567 * ,

� � � �

� ��

��

�� �

� �

� � � � �� �

�� �

� �� � �

� ��

� � � � �

� � � � ��

� ���

� � � �

�� � �� � �

� �������������� ����� !�"#$�%&!'()*#+,

��� ������ �

� � ���������������������� ����

����� �� ���� ����� ���� !"#$% & '( )*$#+' ,*%

-.$ �/01 23 4 5��1 ' �678 !4 9)*+ :;<1& =>$+?! @=>$4� 13AB5CD678E�F� G�HIJ�KL�!MN)*+OPQR' S)*+T�U�VWJ�F XY! Z)*+ >-> 3 ' ,*%[\>+]^!_` 1 a*XY1 6A& 1b ==%! @ )*+ XY1B5C 6cXdX8e f'78 ,1gh! ! ZD4ijk;*XdXl+ ! Z)*+5��1m )*$#85��4#n* opq,='6cXdX8ed4 KIJrs *`t8u! XY1ij ovo f'�c#+? w'xl$#8hy!z{X5��e X |! `)*$#8' @1 1}} Z) s~<p>$"d '78*$#85��%�XdX# � @ 1 o�c � /01b !g<��Q���H���-.! >+& 4 �)*$#8 5��13 ! m � 1/05��'��! �$ �! �*8g#�*+����4�=�Y1 �64ij� >$"� h!Xl+ ,1ghX��1�1�#/05��1��n �! 9)*+ �%m#=�;*8 }+ s -�4 md1�+X �' �*8' � 6 ��! ¡q8+?1& 4¢��1���� ����XY! ;+l$ £)*+¤913 !%z{X� '¥)*$( )*$#+' ¦*%ij4 9)*8§¨!78 #8 t© ª 4,*}6! 1« ¬­6®

X;*+¯ /015��s #$ °­f ± �1²1B³�´r=µ ± ¶1@� ·1¸¹!.#$�+ )�!,1º s« ¬­1 » �/0!g8 g< ��!;+l+5��!>gh=¼o+ �5��4 ����°­ °��½b����!"#$ ! Z)*$#+%1

1 1 ¡ 3 ! #�*$#+����4�!

� � � � �

� � � � � �� �

�� � �

� � � � � �� � �� �� �

� �� � �� � � �� �� � �

� � � �

� ! " � � #$% � � � �

�� � � & � � ' (� ) � *+

� , * % -� . � �

� � / � 012 � 3 ��

4 5 � "6 7 018 � -

9� � � : ;, �

� � &

��

� �

1

No.

Technical Research Report, Earthquake Research Institute, University of Tokyo, No. , pp. , .

*

**

***

* Graduate School of Environmental Studies, Nagoya

University,

** National Research Institute for Earth Science and

Disaster Prevention,

*** Earthquake Research Institute, University of Tokyo.

MT

UNIX

MT

MT MT

MT

CD

MT

MT

MT

Nakano

MT

MT

Key words : Magnetic tape, MT, Seismic record, Data retrieval, Data format

et al.,

Abstract

Open-reel-type magnetic tapes (MT) were commonly used to record seismic and other observation

data more than ten years ago. Although seismic data recorded on MT may contain useful information

about past seismic activities, it becomes di cult to retrieve data from MT recently since the devices

used to read and write MT have been disposed and replaced by recent higher capacity and portable

recording devices. In this paper, we report detailed descriptions how to retrieve Kusatsu-Shirane

seismic data recorded on MT using the existing devices and to decipher the data format without a priori

information, which may be useful to retrieve MT data used in other seismic networks.

Masaru NAKANO*, Hiroyuki KUMAGAI** and Jun OIKAWA***

Retrieval of Seismic Data Recorded on Open-reel-type

Magnetic Tapes (MT) by Using Existing Devices

* ** ***

MT

3 + 1 ,**-3 + 1 ,**-

,**- 2 ,2 ,**- +* ,*

,***

+33,

+332

$

Page 2: Retrieval of Seismic Data Recorded on Open-reel-type ... · @ , b6c de˚fZ˘ M ›-fi #: ˙UY #567 …fl|˚c 567 WZ˘ DE˚f #567 q+,M˘ •o Z˘ › ˙L˝˘*DE ˇˆM F* 567 * ,

� � �

� � �

� ����

��� ��� ����

���� ��� ����

��������� !"#$%�&'()*+,%-��%.#�/0 �123456+

789:; 1234�<0+�89:;�5=>?@AB�CDEF

� � G � � ��

� ��� �

�� �

��� � �

���

��

� � �� � � �

� � ��� �

� � �� �

� ��� �

� � � � �� � �

HI J HI J HI� K J

� �� ��

��

� �� ��

� ���

������� ���������

�� ���������

� � �

���� ��� ������ � � � � � �� �� � ���� ��� !"� #� �$%&'( �$)* +,-./�$%&�0 ��1 2�3 45678� 9� 7�$%&' : � +,-./�� ;" < =�=>?$/8�� " @/$ A��BC1DEF%G�� ��$%&�: H���I1 J�K�LMHNM�O �PQR � ���S AT�UVNMW*XYZ� �[\%� �R�MHNM � J�] �^_ `�� aNb�c61S d �efgh�*i-b j18:k f178� �L $%&�[\%aNbYZ�c��� lS �Y]

7�mn� op� �� q ' 4$%&'rs�t ' �: 6178 sYu� R�178�v ��1w7 7�'xy� 8�� � �� ��$%&'( �$)*3 q 61 'z{61 |L}�8~Y1�3F� � ��$%&�l � q f18��RY� �w�mnY$%&'q 61^�}�P8Y1mn $%&�[\%aNb': 61�� ����o }��l�6

�q �� �� �S �� �-&%�� ' � 7��

� � �3F��y��� �� �h8 � ����$���q ��R��1 77 � �$%&' �61� �R�}� I1 � 7� f1�$��S �y�� �z{61 � � !"" ���%G-�%/ � �� ��R � A � �� F%G *-+ @%b�N�

� �� � �� �DEF%GYZ�I1� �x � I1 � ��� x � 7�' � �R$%&' 456� I1�

� �� = �¡ <v� ¢ £ ��$%&�[\%aNb�c61S ��8¤ZY� � � 5 ¥ � w7 '¦-G61788� § ��I1 = �5 � ��-G�mL� �� � ¨�mnY©a-ª'«L� 45�

��mL� �W-G/¬%b $�&/­ $)*3 [®*/ UVNM¯� ���1 � � �_� °yf W*X� � ���1 77 8Y1��UVNMW*X�± I1 U

VNMW*X� Y²°� F%G��³��UVNM

$�&/­¯� ���$%&� =´µ¶��m� � ��I8·¸©-¹º%&

� ��1 w7 *i-b� YZ�»��Y�� �GV¼H��mL� �� �� �� � F%G� ��[�%b��%G-�%/��}� I1 77 |n$%&�²° ��� +,-./��Q�½�

�� � ��� �

�� � � ����� � � � ��

� � � ��� � ! � �"# $

%� "# & ' $ �( � $ &

)* +, � � -

. /0 12 �

+ 3, 12 � �4 3, + 12

+� 5

+ 6 7 $8 9 :;' <= >� ?

� � @ +<= �A >� <= >�

$ B �� ��� C! D E F % ��=

� �( � �( � G H �( � �

�� I J K L $MN O N PQ%R ;S O �T �

' 6 6' ' UVL ' W XY �

Z[

' \]8^S _`

a` b�c de �

�fN gW

h

� �

2

nucv MT

MT

MT

MZW

MT

MT

Kumagai a,

b, Nakano

MT

MT

nucv Fujitsu GP S

model OS Solaris

MT

MT CD, MO, DVD-RAM,

km YGW, mm DAT, DLT, CMT

YNE, JIE, AIM YNW, JIW

MT

MZW MT

. V m s . V kine

dB Solaris

AD Hz dd if of ibs

AD V bit

HAR-

RIS H-

MT

MT BPI

et al.,

et al.,

MT

MT

+323

+323

. +2

+3

,**,

,**, ,**-

.**

+323 /

+

2

+ 0 + .

. ,

+33+ 2

+

* 1 ,.* , .

/.

+,*

/ +,

+

-**

0,/* ,.**

,

+.

,

+

+

+

� � �

Page 3: Retrieval of Seismic Data Recorded on Open-reel-type ... · @ , b6c de˚fZ˘ M ›-fi #: ˙UY #567 …fl|˚c 567 WZ˘ DE˚f #567 q+,M˘ •o Z˘ › ˙L˝˘*DE ˇˆM F* 567 * ,

� �

� �� � �

� ��� � ��

�� ���������� ����� � ��� �� !��"#��$ %&' (' ��')*+,-. /01� �#�� (' ��')*�� ����� 2'3�����4567 �� !��"#67 "#' * �*"#�89:����"6 ���* ;<=�>?'@AB�CDE�FC:7BGHF7

�� �

� � �� �

� � �� � �

� � I J � �� �

� � � ��� �� �� �

� � �

� �� �

��

� �������� �

����������� � ��������������������

��� �!"�#$�%&'(��)*+ ,-./012�342�5! 6�%&7892.:;<��)* =�>?@�*A� :B2�CD���E�FGHI+ JKLMN� �OP! QRST���! ����UV�*A�WX��.+��YZ+A C[���\�]-� ���$�!^_�+9`Y�CD�� aS\�b��cd!eZfVg+ #h�!"�i/��jk.���Ulm��.+�6ZUn+ ����& op�`+.q29?@� gr #h�!���Ys/'(��5!6�t�uv2 ^`�CD� 012�^`�CD������ $�!^`���/0w0xy5����&z8{�g+ ����� CD�� & ������ Z|}6Z��� ~&'(2 ���CD��Ug9g� ���2/0w0 ������& ������2 �s� ���&�gA��U]� JKLMN� �OP> ��� T����2��&�� � ^� ���T��*-. ���CD���jks�.���Ulm ���Z2.v�U/0Z���jU]�U ��Z2.��.+� "����CD��U $�^`�CD !���������.+�6ZUjY� ����U��Zg� ���^z�� ¡ ����U�� � �����r+. ����� ¢ �£ ��¤! ��&�� Ys �6�*A�2./012�CD��! $��� �����!¥¦t§Z"�¨jZ©ª�� ��

��CD��Z2.«¬��� ­®&���2.C[� �Ulm��.+�6ZUjY� ¥¦t§! ¯¤�]aS\&i/��)*+   ¨j! ¯¤�]�U°LU ¯¤j±²��.r 

3MT

ASCII

f ASCII

ASCII ASCII

MT

no rewind UNIX

ASCII

MT ASCII

UNIX

MB x db x d x b

x x

UNIX ASCII

+0 2 +0* , +0

-

2*1-

+0

,

/ ,*

+** * , * ** ** ** * * *

* +0 * *+ .0

-

, +

,

,

Page 4: Retrieval of Seismic Data Recorded on Open-reel-type ... · @ , b6c de˚fZ˘ M ›-fi #: ˙UY #567 …fl|˚c 567 WZ˘ DE˚f #567 q+,M˘ •o Z˘ › ˙L˝˘*DE ˇˆM F* 567 * ,

� � � �� � � �� ��� �

� �� � �

�� � �

� �� � �

� � �� � � �

�� ��

� � � �� � � �� � � �� � � � � �

� �� � � � �� �

� � �� �

� � � � � � �� � � �� � � � �

� � �� � � � �� � � � ��� � � � � � � �

� �� �� �

� � � � �

�� � �

�� � �

� � �� �

� � �� �

� � � �� � � � �

� � �� �� �

� � � � � �� � � � � � �� � � �� �� �

� � � � �

� �������

� �� �� �

��� ������� ���������� � ����� !� ��"# $�%�&'()* +, � -�.� /01234�567*8� 9������+ ��� � � : ;<��=>�567*� �� � � 9�?�#�@A BC� *�-DE F��� @��-G�567�.�� � �� �H� F* ,�#� ������567*� �����,��@�* �+� F* ��IJ � �01234�567+� $@� K��=>567L �MN �:��OP���.<##Q RM567*S"��*� ������* @@�L ��� ���� �T<,�# F*:���@A�567�UV�#W�� @�� X �UYZ�@�� F [ F�M�567�L\���M��*��@�*567* ,��+�] ���P %^����567 +_# ZM`a b6c�de�fZ���� FghL � i jkl�m ������� ": �567 nopMN ����UY��U �?q� b6c�de�fZ����Lgr���M��*S"�=>567� qstui�L�v6p�wx �# yZ� *�� ZM`a �gz� ��� l{ b6c567�G � � nop567�|}4�m Z�~� z��+, 9� � � � ��o�nop��P�o� �25�&2� r��+, 9�� � � � 5>�7�P>4 �25�&2*�� <� L/��b6c567�G � 9����#�|}4�� ���8� 9Z��L�o� L$�����: �M_��#* $�x L ���25�&2��- � 9Z��L>4 � LU �jM+_# L �LUY�25�&2��� Na,���+L�`���� jM� ��- ��762* �����MN��)b��&6�b�01���Z� �� Na ��# �����*b6c567���o����,*�`����+* +,M�uiL �567� ����@�+, ��o��nop"#L5>�7��UY��q���Z�MN������ *�� �  ��¡`�� L � B+,��� b6c56¢£��#�)b�� Na,*�`����+�%�_ 7�¤B�L 9����M�@�+, @@�L ��¥�@�L�jM+_# �+� ����567 ��o�nop �¦§@��Z� "# �¨"-�.��P� l{*m ������¡`�� � \� *��Z� %�567"�� ��L L�Q� �o © ª� «� « *K b6c��o� �¦§@��Z� b6c567L� "#L ��_# ¬_� 567L �o �B�@�b6c��o�* Ml 9��#d

� ����Z�* $�r� �o*x e�M_��# L � B�$��� ����567��- �o� �25�&2�� ��� ������ �UYZ��{* : ;�������# y <��# �+�DE F567��f Lq,�M+_

# @@�L � 5>�7 �¦§@��Z�@�,�b6c�de�fZ� M �­-®�#

�: �UY�#567��¯|�c 567� WZ�� DE�f �#567�q+,M��oZ�� �� �L��*DE ���M F* 567� * ,�# @�567Lgr�ªZ���,�# ¬_� F567* � � � � �°2���567���o�* �8� 9��#8�m ������T<� � "# 567�� � de�M_��# @��°2�567���o��L F�L¡<M�c�o�M� *�- @��� °2567 �¦§@��Z� °2567L±M ²LnopMN�³ *� ������¡`�� ���$@� ": F567�]´� �@�+,¨Q# °2567L F� Z567�St*$�µ+567+, F*� ������¡`�� ²¶·�¸ �� M *S"�# 567� �-�� @�� ;¹B�567L 0123 ª�UV�#W[ gr���M � ·,��@�4�567��� �567� ·�c�o * +_# Mº 01234l� »��-@�,��# @@� F567L l�01234� ¼ 567� �L »Z��� gr�L 01234�567� \½ �M���$� 9�¥� *� ui� ��ª� 01234�ui� �ªZ� ZM`a �� ! ���01234 �567 °2567�G � �

* ����01 °2nop234 �"�Q� ¼ * ������+ $�� � � F567 � �

� � ��

�� �

� � � � � � � �

� � � � � �� �

�� � �

� � �� �

��

�� � �� �

� � � � �� ! � �

� ��� "

� #� "$ % %

�� �! "

�� &

'� #�& &

( � � � ) �� � �

� * #� #�+ , � (�

� � � $� � + � �

$ #� �) � � (

� - ) � (. �) � �� � �

) �) /� � /

� �

��

��

4

x x a

, ,

integer float

bit inte-

ger

A :

B :

C :

x A

B bytes integer

CPU

B A

B

B

B

fff A

C B

bytes integer

C

integer

integer

bytes integer

MZW

a :

b :

x t ch x t ch

t ch

x t ch x t ch x t ch

- + + + ,

* 1, * .

- +

-

+ , .

-

+,

-

, 12

2*1- 3

--0 -

,/2 * *+ *,

*+ *,

*, *+ -

2*1-

-

2*-1

+, +0 0 -

*** ,.

- +, --0

- +

,

-

-

-

+2 +3

+2 +3

+2

+3

000* 033-

+ + , +

000* 033-

-

Page 5: Retrieval of Seismic Data Recorded on Open-reel-type ... · @ , b6c de˚fZ˘ M ›-fi #: ˙UY #567 …fl|˚c 567 WZ˘ DE˚f #567 q+,M˘ •o Z˘ › ˙L˝˘*DE ˇˆM F* 567 * ,

� �

� ��

� � �

����� ����������� ������ ������� !"#$ %�&'� �����()�* +,!"#$-./ �()�*0 ��������&� ������ �����12�345�$-!"#$-./ 6���789:/; <=��>?���;@/

� � ��� � � � � � � � ��� �� � � � ��

� � � � ��� � �� � � � � � ��

� � � �� � � � � � � � �� � � � � �

� � � � � � �� � � �� � � � �

� � � � � � � A� �� � � � � � � � � � �� � � � � � � �

� �� � � �� �

� � �� � �� � �� � �� � � � �

� �� � �� � �

� � � � � B C � � ���

� �� � � � � � �

� �� � � D �

��

����������� � ��������������������

�� !"�#�$�%�&���' ()� �*� +,-.$ &�/01 ��&23456.789� : ;<=>�� �?@01 ��&�A� =>�� �'BC�DEFG�01�DE. HI=>�� �?@01 ��&J+KL� FM�NO.45�P7� : ���Q = ��&

>�� �;<� ��& 01DE RS�DE' FM�TU�VW98X�YZ[\]^BC��� ��& � �!"�#�$' !"�#�����6

�_`� ��& !"�#�����[ab^ c�!"�#�$6(d^e�f� �g[hij�6 !"�#��B 89��` �;< HI=>�� �01C���+kA�� BC���' l01� ' mnog�=>�� �;<pqHI>�� �01!"�#�r�s���+0tu�vw�9�Cx�P7 6(d���` ' 6 �01�y =� : L� ' �z{��6 �(d���` L� �01' �S|?@0} ~ � 0 r =�Pi j�����(=�)� 1Nic� = 0��N78' =� =.J *6+��^89��� X�=>�� �BC����?@ c�(]�Pi BC��A������016��(d01�P�6���� ^�e6�A&�/01�P�6\]^� .�H*� �����%�&����YZ[mn�� e ' L�' �z{�[ �Nq �z{^8YZ� ���Z�������+ 6 '93)���mn[�g� ����YZ'(��mn�P�+ e� %�&����[ab�����e�A�YZ+����L��FM�YZ+KL��e6+r�7� : : S ��89�e6+����� L� ����'�m

���¡ ��& �@Li n��r+�789� : �¢�!���7��r e�������;<��%�&��£A^9$¤ �A�YZ'�6wJ+ �P�+ XO�.9�r+23 �'¥A��DE+KL� �S ��8!"�#�$ ��& L�' 9�NO��¦� ^�^ BC�z{�,-.DE'§

�¨rhk�� L�e�A'Z��'©ª+\]��.l!"�#��«¬­¡6®r l ��& �7���e�FR�mn'�g.�7�

5MT

character

a b a

a

a

a

b :

b a

b x

b a a

a a a

b bytes integer a a

a a

a a a integer character

bytes integer character a a

a character : S

x

bytes integer

a integer :

a

12 2*1-3 --- -

. +2

. / +2

0 +2

/ 1 -

+ ,+

, 0.2* 02.* , +2 +3

- * ** +/3 +-,

, +2 +3 / 0

+2 +3

1 / 0 +

/ + - . /

+/ +* ,/

+

- . / 0

- , 1

, 0

+ 3 0

* **

-

, - +2

+3

- -

-

Page 6: Retrieval of Seismic Data Recorded on Open-reel-type ... · @ , b6c de˚fZ˘ M ›-fi #: ˙UY #567 …fl|˚c 567 WZ˘ DE˚f #567 q+,M˘ •o Z˘ › ˙L˝˘*DE ˇˆM F* 567 * ,

� � � � �� � � � �

� �� � �

� � � � �� � � �

� �

����� ����� ��� �� ����� ��� �� ����� ���� ! " #$� %&'( �� %)*�+ �,-./ 01234516789 ������:;0< 9

%)*�+ ����� ���%)*�+ =>?@� <./16 " #$�AB CDE� <./16789 AB�� #$�� %)*�+ 01� �� FGHIJ9KL <M N789

������ ����� �����G OP?@ ��%)*�+?@ QR%)*�+?@ ��0JS�< TUVW TUX& JS� Y�Z+�<./16789 [�� \\]�^&� JS _` a8

��<bcd6789\ ���ef�ghi ^&

�� � ���� �

� �6

integer integer

x

integer ASCII x

000* +2 033- +3+

--- * **

* **

.

/

0

Page 7: Retrieval of Seismic Data Recorded on Open-reel-type ... · @ , b6c de˚fZ˘ M ›-fi #: ˙UY #567 …fl|˚c 567 WZ˘ DE˚f #567 q+,M˘ •o Z˘ › ˙L˝˘*DE ˇˆM F* 567 * ,

� �

� ��

� �

� ���

��

����� ��� ������ ������������������ !�����"#��$ %!�& �'()*+,-./01�2345�

���

� �� �

�� �

��

� �� �

� ��

��

�����

�� � � �

� ��

��� �

� � ���

��

� �

�����

� � � �

�����������

����������� � ������� �������� �

� � � �� !" #!$% &'!�()�*+ ,- . / � 0

,123

.4�5�.67�� 89!�����:;�<=>�?@AB �CD�E�.FG�.67��4 �.H

I � JK���L MN�O.� K�� P :;�<=>�Q��R 4STA@GUAE VWX�,� Y� LZ� Y�[\�]^B- Y� ���L �CD�_ L`a�b�c XA@)d

e �fghi�jk lmBe fgJK�h9�j Vn Y���4 K��Bo�j�� pmB �qrs��L @A � � tX�E��jk �u��BvA� Y�w �j� OO�B /x JK /�J)Ay X� z\� �B {|}�L @A����������P ,JK GE�L~��eX� h9��� ��e ��& '!����L ����� �...E� � P ].�� ]4 ���O.4 YJ c � LCD�4 � �}�����\����.KE M.�� XA� �5�d ����G���������Ee

:;�<=>Lb�c XA Ye L ��5�� �4j� OO�� G�B e s���LVW�����������4 � J.@�O.�j� �Bk�@s����e �����B VW �������L ������ � � tXA(UO.4 �����G���L�7G@���B� �j�������LVWXc���O.B �9�7�T�  �¡¢��£�  �¤ ) K�B¥x� �¡¢L ��\�� GE��j� ¦�§ f ��¨X@_ L ��O.��TA �@���JKE¨�G ©4 K��O.Eª � �5� �CD�_ 4�����G����VW� Ad«@�j�

- ���4 � �A@�- .XA &'!z¬�E Hd ­! ® � ¯J�89!G�4j� O�K��° ­!.89!�?@AB ����LVW��±²4j� ³´ h

�VW�QXAB �CD� �� �j� ����:;�<=>�?@AB ­!�����?@AB �µT�E�. ¶·��¸�e �A@��� � ¯J - �]�¹@���º=»�¹@G�L ¼��d _ L½�¦¦ ��O

�� � �

� � �� �� � � � � �� ��

��� � � �

�� � � � � �� � �� � � �

� � �� !� "

� # $ �� �� �� %�& � � � �

' � ( ! � � )� '� � �

� � � � *+,- �.� *� �

/ ' 01 !2�

3 3 453 6 2 � $

� 7�8 � 9 : ��� ;<

�� = � � > ?@A �

>� B

C �� )� *>

�� D �� C

� E � � 7�

� � � �

7MT

.

Kumagai, H., B. A. Chouet, and M. Nakano, a, TemporalJIE

evolution of a hydrothermal system in Kusatsu-Shirane

Volcano, Japan, inferred from the complex frequencies of

long-period events, , , doi : . /

JB .

Kumagai, H., B. A. Chouet and M. Nakano, b, Waveform

inversion of oscillatory signatures in long-period events

beneath volcanoes, , , doi : . /

JB .

Nakano, M., H. Kumagai, M. Kumazawa, K. Yamaoka and B. A.

Chouet, , The excitation and characteristic frequency

of the long-period volcanic event : An approach based on

an inhomogeneous autoregressive model of a linear

dynamic system. , .

Nakano, M., H. Kumagai and B. A. Chouet, , Source mecha-

nism of long-period events at Kusatsu-Shirane Volcano,

Japan, interred from waveform inversion of the effective

excitation functions, ,

.

MT

MT

MT

MT

J. Geophys. Res.,

J. Geophys. Res.,

J. Geophys. Res.,

J. Volcanol. Geotherm. Res.,

+323

+323 + 0

-,/ -./

,**,

,,,-0 +* +*,3

,**+ ***0/-

,**,

,-*+ +* +*,3

,**+ **+1*.

+332

+**-+ +**.0

,**-

+.3

+0.

1

+

+323 +* ++ /*

+323

+323

0.

1

+*1

+*1

+*-

+,,