15
膚膀 膔腵膗 膚膀 膔腵膟 腭腷腢膛腠腓腗腡腖腸 腭腷腢腮膔腰腰腬膎 腭腷腢腓腗腼膢膘 腭腷腢膏腰腦膝膎 腫膍膜腾腭腷腢腓腗膛膉腳腚膍 腭腷腢膏腰腐腞膎腺膞 膓膠腨膁膜腾腩膠腓腗腡腖腸 腉腻腢腆腅腇腰腹膞膆 腭腷膌腒膌腒腊膄膙腲腤腒腡腖腏 腭腷腢膏腰腝腽膎腌膎 腃腀 腍膇腏腒 腧膊 腕膋腋腔 膈膑 腱膋腘腯 膌腜膣腨 腹膆膂膖 腙膐 膞腣膅腈 腛膒腑腶 腎腴腪膡腥 腔腍腃腐腊腆腑腎腏腁腉腒腆腑腂腖腀腄腓腋腇腈腕腅腌 Abstract 22 ORI OSHIMURA AEDA HIMURA HKUMA GAWA ASHIZUME OHARA ONDO AJISA Mie Prefecture Environ- Mie Prefecture Health and En- vironment Research Institute, Sakura-cho, Yokkaichi , Japan. Mie Prefectural Government, Department of Environment and Forestry, Koumei-cho, Tsu , Japan. mental Conservation Agency, Ueno, Kawage-cho, Tsu , Japan. National Institute for Environmental Studies, Onogawa, Tsukuba , Japan. Graduate School of Bioresources, Mie University, Kurimamachiya-cho, Tsu , Japan. J. Hot Spring Sci. During drilling a new bore-hole nearby an existing hot spring, Yunokuchi spa in Kumano city, Mie Prefecture, the existing hot spring water was analyzed continuously for investigation of geochemical influence by the drilling. The concentrations of chloride and copper ions increased obviously accompanying the progress of drilling. It is esti- mated that the anomalous increases of these ions are derived from the mixing of natural groundwater containing higher concentration of chloride and copper ions. It is demon- strated by natural field observation that an existing hot spring is obviously influenced by a new drilling bore-hole close by. In the enforcement of The Hot spring law, it is thought that the distance extent of geochemical influence observed in this study seems to be a significant reference. Key words : Yunokuchi spa, Kumano group, Drilling mud, Chloride ion, Copper ion Yasunori M , Hideki Y , Akira M , Kyoko S , Kazuyuki O , Masahiko O , Kiyoshi H , Seiichi N , Masaaki K and Takamitsu K Geochemical Influence of Drilling a New Hole Adjacent to an Existing Hot Spring + + , , - - . . / / + + + + + , - . / / + + + + + , - . / / ,, , / ,, / ++ /+, +,++ -02. ++ -02. ++ /+, +,++ /+. 2/1* +- +- /+. 2/1* /+* *-*. -,/2 -,/2 /+* *-*. -*/ 2/*0 +0 , +0 , -*/ 2/*0 /+. 2/*1 +/11 +/11 /+. 2/*1 0* ,, -0 ,*+*

j-hss.orgj-hss.org/journal/back_number/vol60_pdf/vol60no1_022_036.pdf · ˇ ˘ ˆ ˙˝ ˛˚˜ !˜ "# $ %& ’ ( ˜ )* +,- ˙˝ . ˜ /01 234 567" !89 ˙˝ :, ;< ˜ = >?3@ >?3

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Abstract

22

ORI OSHIMURA AEDA HIMURA

HKUMA GAWA ASHIZUME

OHARA ONDO AJISA

Mie Prefecture Environ-

Mie Prefecture Health and En-

vironment Research Institute, Sakura-cho, Yokkaichi , Japan.

Mie Prefectural Government, Department

of Environment and Forestry, Koumei-cho, Tsu , Japan.

mental Conservation Agency, Ueno, Kawage-cho, Tsu , Japan.

National Institute for

Environmental Studies, Onogawa, Tsukuba , Japan.

Graduate School of

Bioresources, Mie University, Kurimamachiya-cho, Tsu , Japan.

J. Hot Spring Sci.

During drilling a new bore-hole nearby an existing hot spring, Yunokuchi spa in

Kumano city, Mie Prefecture, the existing hot spring water was analyzed continuously

for investigation of geochemical influence by the drilling. The concentrations of chloride

and copper ions increased obviously accompanying the progress of drilling. It is esti-

mated that the anomalous increases of these ions are derived from the mixing of natural

groundwater containing higher concentration of chloride and copper ions. It is demon-

strated by natural field observation that an existing hot spring is obviously influenced by

a new drilling bore-hole close by. In the enforcement of The Hot spring law, it is thought

that the distance extent of geochemical influence observed in this study seems to be a

significant reference.

Key words : Yunokuchi spa, Kumano group, Drilling mud, Chloride ion, Copper ion

Yasunori M , Hideki Y , Akira M , Kyoko S ,

Kazuyuki O , Masahiko O , Kiyoshi H ,

Seiichi N , Masaaki K and Takamitsu K

Geochemical Influence of Drilling a New Hole

Adjacent to an Existing Hot Spring

+ +

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24

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, m

Fig. Fig. ;

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The major chemical composition of Yuno-

kuchi spa (Analyzed Data in May, )

Fig. Geologic column of the part of Kumano group (Agency for Natural Resources and Energy,

Ministry of International Trade and Industry, ).

Table

25

Concentration (mg/kg)

Cation Anion

Li F

Na Cl

K Br

Mg HCO

Ca CO

Sr

Mn

Water temperature .

pH . Yield L/min.

Table m

, m

m , m

+33*

,+32*

+

,-

, ,-

,

,

,4+ ,43

.1*4- +-/1

042 .41

34* 2143

-/+4. *4-

.43

*4-

.0 ,

1 2 ,-*

0* ,*+*

+ 3**

3**

+ -**

-

-/ + .**

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Na, Ca, Mg, K :

: SHIMADZU AA-

: Air-C H

: HCl

F, Br, SO :

: DIONEX DX-

: AS- mm AG- mm

: ASRS mm

: . mmol L Na CO . mmol L NaHCO

: . m

Cl :

: N AgNO

K CrO

, ,

.

, - -

-

, .

,**2 , . ,

,**0 2 ,**1 , 1

+ +

,**1 +* ,**2 0 3

+ ,

,

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+ +*

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27

plus

Sr, Mn, Cu, Fe, Li : ICP

: YOKOGAWA HP-

: HNO

HBO : ICP

: SHIMADZU ICPS-

:

H SiO :

: SHIMADZU UV- A

:

:

: Thermo Fisher Scientificmodel DELTA XL

: . m

: SMOW Standard Mean Oceanic Water

. m

ICP

Cl :

: DIONEX DX-

: AS- mm AG- mm

: ASRS mm

: . mmol L Na CO . mmol L NaHCO

: . m

Fig.

Fig. Fig. , Fig.

. . pH . . L min.

Fig.

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Fig. Temporal variation in ion concentrations in the hot spring-water from an existing

Yunokuchi spa (Observation period ). Data Obtained before drilling a new bore-hole.

28

. mg kg

. mg

kg

Fig.

-

* +

* 3

/

- ,

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Fig. Drilling depth of a new bore-hole and temporal variation in ion concentrations in

the hot spring-water from an existing Yunokuchi spa (Observation period ). Drilling

depth is shown by a white bar graph.

29

Fig.

,

Meteoric Water Line MWL

Craig.

SMOW

SMOW

R RR

R D H

R O O

.

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+ ***

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Fig. Observed Zn concentrations at Yunokuchi spa. Dotted lines indicate the time

of exchange of air pipe containing Zn (Observation period ).

Fig. O- D-diagram of hot spring water from Yunokuchi spa.

30

D O

MWL

Fig.

+2

/

0

+22 +*

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d d

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Fig. Observed Cl concentrations at Yunokuchi spa during drilling at adjacent site (Observation period ).

31

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Chemical compositions of

the drilling mud in this study

Table

32

Concentration (mg/kg)

Cl

Cu

pH .

Table

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. mg kg

. . mg kg

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Fig. Observed Cu concentrations at Yunokuchi spa during drilling at adjacent site (Observation period ).

33

m, m

, m

m, m

m

2

0* ,*+*

/** 1**

3** + -**

.** ,**

,** .**

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Fig. The model of geochemical influence of existing hot spring by the drilling.

34

, m m

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kg , mg kg

m

. mg kg

3

+ -** -/

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+ .-*

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35

Chijiwa, K. and Tomita, S. ( b) : Sedimentary Environments of the Main Part of the Kumano

m

NNC

:

Craig, H. ( ) : Isotopic variations in meteoric waters. Science, , .

Chijiwa, K. and Tomita, S. ( a) : Stratigraphic notes on the Kumano Group (A study of the

Tertiary Formations of the Kumano Coal-field in the Kii Peninsula, Southwest Japan,

part ). Mem. Fac. Sci., Kyushu Univ., Ser. D, Geol., , .

Group (A study of the Tertiary Formations of the Kumano Coal-field in the Kii Peninsula,

Southwest Japan, part ). Mem. Fac. Sci., Kyushu Univ., Ser. D, Geol., , .

Chijiwa, K. and Tomita, S. ( ) : On the Onuma Formation of the Kumano Group (A study

of the Tertiary Formations of the Kumano Coal-field in the Kii Peninsula, Southwest

Japan, part ). Mem. Fac. Sci., Kyushu Univ., Ser. D, Geol., , .

: .

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