DOI: 10.5593/SGEM2016/B31/S12.009


A.E.Briciu, D. Mihaila, D.I. Oprea-Gancevici, P.I. Bistricean
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-61-2 / ISSN 1314-2704, June 28 - July 6, 2016, Book3 Vol. 1, 63-70 pp

A campaign for a continuous monitoring of the water temperature of a thermal streamwater was undertaken from December 2015 until February 2016. The streamwater originates in a former mining tunnel drilled into limestone, near Cerna River, at the upstream limit of the Băile Herculane (Romania) built area. The water measurements were obtained inside the tunnel, near its outer end. In parallel, air temperature measurements were done in the exterior air, near the tunnel. The average water temperature (measured every 30 minutes during the entire campaign) was 41.73°C, while the average air temperature (recorded each hour) was 3.17°C. The standard deviation was 1.8°C for the water temperature and 4.67°C for the air temperature. The maximum temperature was 43.795°C for water and 18.5°C for air, while the minimum temperature was 35.511°C for water and -9°C for air. The water temperature sometimes follows the air temperature and records diurnal cycles. There is a mountain valley topoclimate in the area, but the mine microclimate influences the water temperature. The thermal springs along the Cerna River have an important impact (through their number and discharge) on the water temperature of this river.

Keywords: limestone, streamwater, diurnal cycle, climate