Geophysical Resea ch Abs ac s,
Vol. 10, EGU2008-A-03291, 2008
SRe -ID: 1607-7962/g a/EGU2008-A-03291
EGU Gene al Assembly 2008
© Au ho (s) 2008
Magne ic and op ical p ope ies o ae osol pa icles
collec ed on il e s in he no heas e n sub opical
A lan ic (Cana y Islands)
F.J. Láza o (1), L. Gu ié ez (1), V. Ba ón (2), M.D. Gelado (3)
(1) Uni e sidad de Za agoza, Za agoza, Spain, (2) Uni e sidad de Có doba, Có doba, Spain,
(3) Uni e sidad de Las Palmas de G an Cana ia, G an Cana ia, Spain (oso o@uniza .es / Fax:
+34-976-761957)
Besides conside ing he elemen al composi ion o A ican dus s cu en ly deposi ed
in he Cana y Islands and in o de o in es iga e hei anspo p ocesses i appea s
in e es ing o use al e na i e cha ac e isa ion echniques ha may be mo e sensi i e o
some elemen s as, o example, i on, gi en he ele ance o his elemen in he seawa-
e biogeochemis y. Wi h his aim, expe imen s o low empe a u e AC magne ic sus-
cep ibili y, ield dependen magne isa ion and VIS-IR di use e lec ance spec oscopy
ha e been ca ied ou on dus samples collec ed om di e en e en s a he Talia e
s a ion (G an Cana ia island) wi hin he pe iod om Feb ua y 2004 o Sep embe
2005. These expe imen al echniques ha e been chosen as he i on con en , and i s
chemical specia ion, a e key con ibu o s o bo h he magne ic and op ical p ope ies
o he dus s. The expe imen al esul s indica e ha he samples con ain: i) a pa am-
agne ic ac ion p esumably co esponding o silica e-embedded ionic i on and ii) a
pa icula e ac ion likely co esponding o i on oxides o oxyhyd oxides (haema i e,
goe hi e and e ihyd i e) showing magne ic elaxa ion o e a wide empe a u e ange.
The magne ic beha iou is quali a i ely e y simila o all he samples unde s udy.
The colou changes (hue and ch oma pa ame e s), de i ed om di use e lec ance,
may esul om he di e en dus loads in he il e s, in ag eemen wi h a quan i a i e
analysis o he magne ic da a. The as onishing simple magne ism obse ed, i com-
pa ed wi h he usual one o soil samples o aeolian o igin, may open he way o
u u e magne ism-based sys ema ic s udies o hese ae osols.
