Medidas térmicas de alta precisión en el laboratorio geodinámico de Lanzarote

Since 1988, under the exislinq collaboralion belween the Instituto de Astronomía y Geodesia, the Observaloire Royale de Belgique and the European Center for Geodynamics and Seismology,lhermal measuremenls have be en made in the geodynamlc slalion Cueva de los Verdes (Lanzarole, Canary Islands), that have been used lo check the quality oí the sensors used as well the thermal slablllly of the laboralory. Several experiments have been performed:measuremenls oí vertical and horizontal thermal profiles, continuous records of the temperature In different points of rock and continuos record of the ambient temperature of the laboratory. The measures of the temperature profiles have been made in three observation campaings, the results of which we pr:~ent here. We have achieved precisions in the range of 10 oC. We have found a vertical gradient O.03oC/m in the profile temperature. The long and short period variations of rock and ambient temperature have been studied. The results of the harmonic analysis of those temperatures are presented here.