Author/Authors :
Teodoro Kavouridis، نويسنده , , Dimitri Kuris، نويسنده , , Costantino Leonis، نويسنده , , Vera Liberopoulou، نويسنده , , Joannis Leontiadis، نويسنده , , Costanzo Panichi، نويسنده , , Giorgia La Ruffa، نويسنده , , Antonio Caprai، نويسنده ,
Abstract :
Two distinct hydrothermal aquifers occur beneath the volcanic crater[ The deeper one is
characterised by temperatures above 229>C and a chemical and isotopic composition in agree!
ment with a thermal modi_cation of seawater by water:rock interaction and boiling processes
at depth[ The shallow aquifer has temperatures below 069>C and salt content and isotopic
composition between those of seawater and local groundwaters[ The steam produced at the
caldera rim "Kaminakia group# has a dD and d07Oof 31-and 5[0-\ respectively\ whereas
the steam produced inside the caldera "Stephanos and Polybotes group# exhibits average d
values of 00-and 1[4-for D and 07O\ respectively[ Such values are indicative of di}erent
parent waters for the above two aquifers[ The isotope geothermometers based on the pairs
"CH3 H1#\ "H1O H1# and "CH3 CO1# from the same fumaroles yield values consistently within
the 099 249>C range[ 0888 CNR[ Published by Elsevier Science Ltd[ All rights reserved[
