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+ , +0  +*  .   +0  ++  ,* Chemical Composition of Hot Spring Water on Low Landof South Area in Saga Prefecture
Kazuyo ISAGAI+, Tomoe TANAKA+ and Kiyoharu ISAGAI,+

Saga Junior College, , Chemical Research of Water

Abstract
Springs in Saga prefecture, Southwest Japan, are classiﬁed into three groups of south(A), west(B) and north(C) areas. A area is lowland made by reclaiming of tidal ﬂat ofAriake sea. The stratum of A area consists of alternation of clay, silt and sand layers.
The geology of B area consists of andesite and Tertiary strata. The geology of C area
consists of granite. Temperature of springs of A area are ,2 /2! with the positive
relationship between temperature and depth.
Though A group springs is close of Ariake sea, their concentrations of Cl" and SO.,"are low. The order of concentration of chemical composition of A group is Na#$Ca,#%
Mg,# and HCO-"$Cl"$SO.,". These springs are Na#"HCO-" type, and there are noe#ect of sea water. While Rn is not included for spring in A area, and their concentrations of sulfate are lower than the other groups. The concentrations of HCO-" of springs
in A group are very higher than those of springs in B and C groups.
Key words : Springs of south area in Saga prefecture, Reclaimed lowland of Ariake sea,
Chemical composition.
&"'"( : )*+,-. /012345  6147¼148+ῌ ῑ῏   ! " #$%&'()*+,-./0123 456789:'! ;<=>2:?@&ABCDE;<FGHID! J KL MNO PQRS23+TUSD! VWXYZ[& \L]
HID3 ^ :-_`abcH&'! dXL efg

hSiUL8j,klL dXL LmnXL23@3:'!
0123opq"ArD3 $%I#+, stuvw
xopq"AD!  yIsagai, Ki. and Isagai, Ka. +322z  y{|+32-z '}~89:A! ~'J 8;

&su I23 J 8I8 I!

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 "'~&A yIsagai, Ki. and Isagai, Ka. +322 : {| +32-z! C BCHID! JSSA S y;PQSz B S y <Sz C S y¡¢nX£Sz DEF S y¤¥TUSz  "'! A S¦U§ B S¨
TU§iU©D y +32/z! A S;PQS +*ª-* m «¬­q¦UPQSD! C ®¯°01q"±² ³´² &²²q"3 Jµ¶·¸q" ¹º »+:'! =>01q"A"Fig. + Geologic map and sampling sites.
Springs in Saga prefecture are classiﬁed into three groups of south(A),west(B) and north(C) areas. Sampling sites : No. +ªNo. 3.

¤ /. ¥ _,**/i¦§¨EF¢©'&5bcª«4 B m !

!" E #-. /01. 2

149 E  /* ,/$ % &'( )3.!

" ,'( 4 85 9:; 9'( " ,47!&5?@ AB)CD" EF&5GHI.!,**#*+ ,'(&526<=>+ 67!

%JK*!

L+ ,/* +,/** m "- EF&5G#MNOPQ'R)S + TU " NO No. 2 2 No. 3  , VW&52
67!

 '( " &5XYH)Z + U ".  NO[\ ] [\^ KD CD _`a[\bcdefghF+ +32*i"
HCO-j klmnHopK*qr" klmnHst H,SO. uvwx2yzl{|}+ yzl~{ln;U ). KD" Na, K H+ Ca,,Mg,  EDTA K{tKD"SO.,j 2 Clj ~KD" Rn st IM 5o _od

i KD"/
EF&5Gst)Z + U "
/+ EF&5G5&<2,¡ No. 0  /2.1$ *+ ¢ 2,¡ ,/.*$ D" 

Table +

Chemical data of hot springs

Well
No.

Depth A.T.
(m)
($)

W.T.
E.C.
($) (ms/cm)

pH

No. +
No. ,
No. No. .
No. /
No. 0
No. 1
No. 2
No. 3

-/*
,**
1**
/**
-.*+/**,2*+2*+,*-+4*,/4*..42,142-*4//241-+4*,24*,/4*

24*2
14/.
24++
14,1142+
1423
143/
143*
141/

,24*
-*4*,341-*4*,342,24/-+4*-*4/-*4*

A.T.£Air temperature
W.T.£Water temperature
E.C.£Electric conductivity

1-2-.12..
10,-+.
+.-++,23++0203

HCO-j SO.,jClj
Ca,
Mg,
Na
K
(mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l)...
,+0.32.-++323/,/+0.1.,,

*41*
*4/,
*4,*
*4+*
*4**
*4/3
14-.
/4-*
/4-.

--4+*41
-34,
.341
14*.
+34*
++*
124/
.04+

,242
+04,+-4*+,4.
34-/
,4*+
24-/
24/2+-4,-4,0/43-4-*.4-.
,401
*4+*
-43+.43/+*4.

+1+/,4*+3/+0.
1*4-02,/+,*+-1,4.*+24*+-4+,04/.4/2.401,-41+340+/4/e150

 No. 0   +,/** m  ,     , !"!"#$ %& '()*+,/0 . ,/1,22 34 (5.67 8 9:;<=>-.

?@A!8 BC (D9EFGH IJ*KLMN O/,pHpH  1.,112.++ P8 QRSTU  pH  V8 WOP

%&"W pH XYZ[\ ]^#$ %&/- XYZ[\W _` No. 0cm  No. ,-.1 msῌcm W N&+,.-+ msῌcm P8 aW  No. /-+. msῌ

NXYZ[\  No. 0 bcdefg

hN ij& XYZ[\ _`k: HCO-l  Nam

h#$W/. n_`opj&defgq:rstuvstuq: wfx&y& -8
 .   - Prstu^ _`k:z fg67: Nam rstu~| Nam{|:}

 No. , k: /0ῌ8 No. 3 k: 10ῌ z _` 2*ῌ W rstu~| Ca,m  Mg,m W  No. , P Ca,m  ,*.,ῌ8 Mg,m  +,.,ῌ W N&z67:N .:|=>&
 .  opj&vstu}  No. 0 P8 No. ,, No. / z _`67a} vstu~|k: 30.0ῌ ~|8

 No. 1a No. 1 k: 1,.,ῌ W Cll,0./ῌ  No. 2

Fig. ,

  HCO-l W No. 0,,.*ῌ P8vstu~|a}

Relationship between temperature and depth of well.

 No. 0-.-ῌ

U /. V W,**/X

YZ[\]^_?%FJ`K aHFig. -Cation composition of sample waters.
NaTKTCa,TMg,TFig. .

Anion composition of sample waters.
HCO-/Cl/SO.,/ No. 1, No. 2 151  ! No. . "#$%&'   ()* +,-. ! SO.,/  No. 1, No. 2, No. 3 0123456!7 No. 1,No. 2, No. 3 89 ,/*:0** m "#$6$@ABC' SO.,/  H,S;$<=$% >?

D@A6!' EFG7H ! IFJKL5MN +,*** m 89O6!H No. 0!7EPQRS23456XM152

NaHCO-       !"#$%&' ( / ) Na

HCO- *+ ( 0 ) Na

Cl- ./*01 ( /  NaHCO-

3456.78+ R, 9*.3.+  :) HCO- ) Cl *;<R = >?@A+ BCD ./ EFG)HI:88 JKLMNaHCO- N

2),O 1PQRST$ A+ 8) NaCl N OST$UV1P4 W<8

Fig. /

Fig. 0,HCO-

Relationship between HCO- and Na concentrations.

Relationship between (HCO- Cl) and Na concentrations.

 /.  ?,**/AHIJN23 *+153//  !"#$%&' ($( )*+,-. +,*** m /0123
 4*567(&' Ca,8  Mg,8 > ?@ +A!+ 9*:; %&' <=

7B#$%&C$D Rn EFBG#$%&' HIJ )*+KLMNOP)*+ -.-*Q,*.+ mache  Rn CRSBG+*T ?Isagai, Ki. andIsagai, Ka. +322A' U&VWMNO )*+ P

!T"#*C

*./.Q,.33 mache  Rn CRSBG+*T ?XY +32-A'

/0Z1[\]^ Ca,8_Mg,8_?Na88K8A )`ab\]^ Cl__HCO-__SO.,_ cd6efgh\fij U& ?Na88K8A_?SO.,_8Cl_A_?Ca,88Mg,8A_HCO-_ cd6kgh\fij 7(&' Z 1 `[\]^ Na8lCa,8mMg8, cdCnDG Na8 4o p
1(+*TqCr$%&' b\]^ HCO-_lCl_lSO.,_ cdCnDG HCO-_ 4op1(+*TqCr$%&' A.M. Piper D `Tkgh\fij$DNstug^6v
wxTyCz{BG+*T ?|} +301A' qG6~*+tug^6vwxT

Tq67(&'0 HIJNTSN

4 #%+ BG&#T ?A CBT` #%&' q o +BG ^BG+*T'  )*+[\]^ T Na8 Co U&b\]^ Fig. 1

Tri-liner diagrams and Key-diagram of sample waters.

b'154

 HCO-  ! "# $%&'()*() NaHCO- +(,-./012 NaCl +(,-.3456/7 89:1 ;<=>?@A 2BC":D NaCl E;FG1H
IJAK# LM2E;N1 SO., OM2H PIE;N1K#
OM Ca,Q, Mg,Q E;FLMRSJ# TUV2W7XYZ4[\M2JF Rn E;N1OM2W7 Rn E;N1K# OM
$%&'()FLM2,]^K0 \MRSJ"# _`ab'cd /1 efc2W7gh ,**. i 3 j ++ `k῍ῌIsagai, Ki. and Isagai, Ka. (+322) : Radon concentration in ground waters in some areas ofgranite intrusion in various ages. l'cm0 .30 ,03ῌ,12.

nopqr _+32-k : TUVLM4s&'tuv0 w'cm0 +20 ++ῌ,+.
x5yz{ _+3/.k : TUV4|0 TUV`a)}&'c\=~M _+32*k : )}0 +21ῌ,-00 &'TUV _+32/k : 45 0 +ῌ020 TUV _+301k : 45'0 -020 