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Titolo:
MICROCLIMATIC CHARACTERIZATION OF A KARSTIC CAVE - HUMAN IMPACT ON MICROENVIRONMENTAL PARAMETERS OF A PREHISTORIC ROCK ART CAVE (CANDAMO CAVE, NORTHERN SPAIN)
Autore:
HOYOS M; SOLER V; CANAVERAS JC; SANCHEZMORAL S; SANZRUBIO E;
Indirizzi:
CSIC,MUSEO NACL CIENCIAS NAT,JOSE GUTIERREZ ABASCAL 2 E-28006 MADRID SPAIN CSIC,INST PROD NAT E-38206 TENERIFE SPAIN
Titolo Testata:
Environmental geology
fascicolo: 4, volume: 33, anno: 1998,
pagine: 231 - 242
SICI:
0943-0105(1998)33:4<231:MCOAKC>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
TOURIST;
Keywords:
TOURIST CAVE; NATURAL ENVIRONMENTAL CHANGES; HUMAN-INDUCED CHANGES; VISITOR CAPACITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
M. Hoyos et al., "MICROCLIMATIC CHARACTERIZATION OF A KARSTIC CAVE - HUMAN IMPACT ON MICROENVIRONMENTAL PARAMETERS OF A PREHISTORIC ROCK ART CAVE (CANDAMO CAVE, NORTHERN SPAIN)", Environmental geology, 33(4), 1998, pp. 231-242

Abstract

The Candamo Cave contains an important group of paleolithic paintingswhich have been seriously deteriorated due to mass tourism. In this work, an analysis was carried out of different climatic parameters (CO2, temperature, humidity, Rn-222) during annual cycles with the cave closed to the public and during an experimental period of controlled visits. The effect of visits on the geochemical characteristics of karstic water was also analyzed together with the cave ventilation. The natural variations in the cave air CO2 were above 3000 ppm, the increase produced through visits was only 100-110 ppm and since the humidity is almost permanently at saturation point, the critical parameter which limits the visitor capacity becomes air temperature. The temperature changes during the annual cycle are of the order of 1 degrees C in the external part and less than 0.5 degrees C in the internal part of the cave and a maximum increase of 0.13 degrees C was observed during the period of the visits. The Rn-222 and CO2 concentration minimums in the summer period (July-October) show that this is the most propitious time for visits, since the greatest ventilation is produced in the cave at this time and, therefore, the greatest capacity for recovery. The geochemistry of the water, on the other hand, indicated that this is theperiod of the year in which processes of wall corrosion can be most easily introduced, although this would be of limited magnitude. The visitor capacity calculated was 29 visitors/day.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 17:18:41