The Symposium will be held 13-17 September,1994 at Oxford University and 17-23 September, 1994 at the University of Huddersfield.

Department of Geographical & Environmental Sciences, the University of Huddersfield and the School of Geography, the University of Oxford.

the International Association of Hydrogeologists (karst Commission); and the International Geographical Union (Commission on Environmental Changes and Conservation in Karst Areas), British Cave Research Association; the International Speleological Union (U.I.S.); Postgraduate Research Institute for Sedimentology, the University of Reading and the Department of Geography, the University of Durham.

Karst environments are particularly complex and fragile and their study involves a wide range of scientists. In no other environment do the skills of the geomorphologeologist, geologist, hydrologist and hydrogeologist overlap to such a marked extent. The presence of caves which provide access to active and relict a quifers is a unique feature of karst environments and speleologists can provide invaluable insights to hydrogeological studies. Despite these obvious areas of overlap karst scientists have too often worked in isolation from each other, remaining within subject boundaries.

The purpose of this Symposium is to bring together scientists form all of the major international groups who have a concern for the hydrogeology and geomorphology of karst environments and for the conservation of these environments.

Date: 10-11 April, 1994
Venue: Hanoi, Vietnam.

*Hanoi University,
*Geographical Association
*State Programme KT-01
*Research Institute of Geology and
*Mineral Resources
*Vietnam Tourism Agency.

The Organizing Commitee of the International Symposium on Applied Tropical karst cordially invites scientists and others concerned with earth resources for sustainable developments to the Symposium.

The Organizing Commitee wishes to invite technical papers for presentation in the following topics of interest:

*General problems of tropical karst
*Karst caves for tourism
*Mineral resources related to karst
*Archeological sites related to karst caves
*Karst for other economical values

Post Symposium Excursions will be organized. They shall include visits to:

*Halong Bay
*Phongnha Cave (Quangbinh Prov.)
*Bichdong Cave (Ninhbinh Prov.)
*Hoabinh Area

Deadlines:

*Submission of Registration: Jan. 1994
*Submission of Abstracts: 28 - I - 1, 1994
*Submission of Manuscript: February, 1994

Before Dec., 1993: 100 USD
Late Registration: 150 USD
Field Excursion Fee about 150 - 300 USD
(150 USD for 400 km: 300 USD for 1,000 km).

For further informations please contact:

Prof. Dr. NGUYEN QUANG MY Depart. Geography and Geology
Hanoi University
90 Nguyen Trai Str.
Hanoi, Vietnam
Tel. 583061, Fax. 84 4583061

FIRST CIRCULAR
Cuba, April 18-28, 1994

IGCP-299 Project:"Geology,Climate, Hydrology and Karst Formation". UNESCO. Cuban National Committee for the International Hydrologic Program. UNESCO.

The main objective of the Round Table on Tropical Karst is to gather all specialists who have worked in such a karst and own related in formation and scientific results in order to exchange criteria, experiences and methodologies in an appropriate framework, and to discuss and publish such results. Also, GITCEK - founded in April 1992- will hold jointly its 2nd meeting. Its main purposes will be: 1) to review the two-year results, 2) to enhance its scope, and 3) to draw u p guidelines for the forthcoming two years.

The Organizing Committee is pleased to invite you to attend both scientific events and to submit your ideas, suggestions and papers. Please complete and ret urn the accompanying questionnaire as soon as possible to the Secretariat.

Such events will take place in the middle of the tropical tower kars t at Sierra de los Organos, Pinar del Rio Province, and will consist of paper sessions, thematic lectures, working meetings, video and slide sessions, as well as field trips to different seasonally wet tropical karst locations of weatern Cuba (cone and tower karst in the mountain ranges Los Organos and Rosario, and covered karst in the southern Pinar del Rio Plain). Moreover, post-event excursions will be organized to the karst of coastal plains and hilly lands in central and souther n Havana and Havana City Province and to those of coastal plains and wetlands on karst in Zapata Swamp, southern Matanzas Province.

* Hydrology, hydrochemistry and dynamics of karst processes in tropical conditions.
* Experimental catchment areas and systematic observation networks. Methodologies and instrumentation.
* Hydrological and hydrochemical time series processing and analysis.
* Environmental change and conservation in karstic areas.
* Natural and human-induced processes in karstic areas.

Spanish, English and French.

On-site registration fees will be: $50.00 USD/participating member and $30.00 USD accompanying member (to be paid in Havana).

Hotelrates and payments are to be arranged with representatives of the tra ve l agencies (see list enclosed). Prices will be: $48.00 USD (single room) and $40 .00 USD (two-bed room), and include:

- Nights in hotels breakfasts and dinners.
- Transfert.
- Scientific field trips.
- Welcoming cocktail and Opening Dinner.

17/04 Arrival to Havana. Transfer to the hotel.
18/04 Transfer to Vinales, Pinar del Rio Province.
19-21/04 Working sessions and field trips to the karst of Sierra de los Organos.
22/04 Visit to the cone karst of Sierra de los Organos.
23/04 Visit to the karst of coastal plains and hilly lands of Havan a and Havana City provinces.
24/04 Transfer to Cienaga de Zapata, Matanzas Province.
25/04 Field trip to the coastal plains and wetlands on karst of Cienaga de Zapata.
26/04 Transfer to Varadero.
27/04 Visit to the coastal karst of Hicacos Peninsula.
28/04 Transfer to Havana. Visit to the Valle de Yunuri.
29/04 Return to the respective countries (*)

* Such field trip participants may return to the respective countries directly from the international airport of Varadero at choice.

a) No more than 20 high-quality printed, double-space typedpages, including figures and graphics, in A-4 format, using one of the aforesaid official languages.

b) Abstracts will no exceed a single page.

c) Figures in single colour, A-4 format if they follow the text or included in the text.

d) Bibliographic references listed by author's alphabetical order at the end.

e) Title in capital letters followed by author(s) name(s) will preceed the text.

f) A 5" or 3" deskette containing the complete paper in Word, Word Star, Word Perfect of compatible computing language will be also sent.

Papers received as the above instructions -before the deadline date- are planned to be published in book form and distributed during the registration, along with the scientific field trip guides.

Javier E. RODRIGUEZ or Antonio R. MAGAZ
Instituto de Geografia, Academia de Ciencias de Cuba
Calle 11 No.514 e/D y E, Vedado,
C.P. 10400, La Habana, Cuba.
Phones: (537) 32-9786 32-1108
32-4293 32-4295
Fax: (537) 33-8212 33-8213

Comments and suggestions to Webmaster,
Copyrights by Karst Dynamics Laboratory and Network Center of Guangxi Normal University,
1995-1999. All rights reserved.