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IUGG Meeting in Perugia, July 2-13
From: Giovanni Orsi <orsi@xxxxxxxxxx>
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VS006 - Caldera I - Calderas and resurgent calderas
This is to invite you to participate to the Session VS006 “Caldera I -
Calderas and resurgent calderas”, which will be held at the IUGG Meeting
in Perugia, July 2-13. For detail consult http://www.iugg2007perugia.it.
Caldera collapse and resurgence are common features in volcanic systems
and have been classically interpreted in light of inflation and
deflation processes of magma reservoirs. Their size can vary
significantly as well as their dynamics. Such variability can depend
upon both the characteristics of the volcano, including its magmatic
feeding system, and/or of the crust, and regional stress regime.
Pre-existing regional structures may influence stress propagation or may
be reactivated during collapse and resurgence. The regional stress field
may directly influence the formation of new structures, and the shape of
calderas and resurgent blocks.
This Session is devoted to the presentation, discussion and comparison
of caldera collapse and resurgence case histories. Contributions based
on geological, sedimentological, structural, petrological, geophysical
investigations, as well as on variable types of modelling, are
solicited. Contributions on active calderas and resurgent calderas, with
obvious implications on volcanic hazards assessment, are also welcome.
Participants are encouraged to register for Field Trip FTV007 on the
Neapolitan volcanoes, during which the active Campi Flegrei and Ischia
resurgent calderas will be illustrated.
Giovanni Orsi - Istituto Nazionale di Geofisica e Vulcanologia -
Osservatorio Vesuviano, Naples, Italy – orsi@xxxxxxxxxx
Grant Heiken - 331 Windantide Pl., Freeland, WA, USA – heiken@xxxxxxxxxxx
Sandro de Vita - Istituto Nazionale di Geofisica e Vulcanologia -
Osservatorio Vesuviano, Naples, Italy – devita@xxxxxxxxxx
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VW 001 – Guidelines for the preparation of volcanic hazards maps
This is to invite you to participate to the Workshop VW001 “Guidelines
for the preparation of volcanic hazards maps”, which will be held at the
IUGG Meeting in Perugia, July 2-13. For detail consult
http://www.iugg2007perugia.it.
The IAVCEI Commission “Mitigation of Volcanic Disasters” (Giovanni Orsi,
Claus Siebe and Jan Lindsay, leaders) is currently focusing efforts on
volcanic hazards maps as these are probably the single most important
tool and first step in volcanic hazards mitigation. The rationale behind
this effort is not only to promote the preparation of hazards maps among
members of our community, but also to seek consensus on the criteria and
format used in the preparation of such maps.
This workshop will be the continuation of the workshop of similar topic
held at the Pucon (Chile) IAVCEI meeting by the CMVD. Participants to
the workshop are encouraged to join the field trip on the Neapolitan
Volcanoes (leaded by G. Orsi, R. Santacroce, S. de Vita and M. Di Vito)
in which the Vesuvius and Campi Flegrei hazards maps will be presented
and discussed.
Giovanni Orsi - Istituto Nazionale di Geofisica e Vulcanologia -
Osservatorio Vesuviano, Naples, Italy – orsi@xxxxxxxxxxx
Claus Siebe – Departamento de Vulcanología, Instituto de Geofísica,
UNAM, Mexico City, México, D.F. – csiebe@xxxxxxxxxxxxxxxxxxxxxxxxx
Jan Lindsay – Institute of Earth Science and Engineering, University of
Auckland, Auckland 1142, New Zealand - j.lindsay@xxxxxxxxxxxxxxx
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