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The main objective of this action is to analyze the behavior of this failure to understand the mechanisms generating earthquakes.

This plan is framed in the draft INTERGEO research in collaboration with the Faculty of Geology at the Complutense University of Madrid and the National Geographic Institute

Councilman Rural Development of the City of Lorca, Angel Mecca, reported that from 11 to 16 July is conducting drilling a survey of 40 m similar to the one conducted last year depth within the same project .

Specifically, it is being installed in the hamlet of La Torrecilla, located several km southwest of Lorca.

Angel Meca has indicated that the main objective is to study the behavior of the failure of Alhama to detect and locate earthquakes and tremors of very low magnitude, in order to understand the mechanical behavior of the fault and its environment, and to analyze the mechanisms generating earthquakes.

To do this, the installation will consist of two seismographs that will provide data on seismic activity and help improve seismic risk studies and transfer.

One of them will be installed in the bottom of the survey and one on his foot in order to calibrate the signal.

Note that our town is in an intermediate fault zone and the data to provide this research will be of great importance not only locally, but will place on the international scene Lorca seismic.

It is intended to be observed by experts if there is a microseismic background it can be indicative of a slow-moving, technically called "creep or creep," or if instead the fault remains "silent" seismically speaking.

Councilman Rural Development has stressed that this project is the first step in the implementation of a system of geological and geophysical monitoring and will improve the seismic resistant designs in the region.

In addition, the INTERGEO research to analyze large areas intersegment failure to understand their behavior and determine its seismic hazard.

Mecca Angel explained that this work is being carried out by a team of geologists, geophysicists and Geodesy, coordinated by the group of Active Tectonics, Paleoseismicity and Risks Associated Complutense University of Madrid.

The intermediate zones of the fault are those in which this change of behavior and / or geometry, and therefore tend to be regions where the reliefs associated with its activity change morphology and dimensions.

This causes major rivers are channeled in these areas between segments and open in the valleys.

This is especially clear in the River Valley Guadalentín, where the variety of large populations: Lorca, Totana, Alhama de Murcia are located practically on top of the trace of the fault of Alhama de Murcia (FAM), and along riverbeds happened to the valley open through intercompany areas of the FAM.

The fieldwork developed last year contemplated the core drilling witness 250 m deep, will cross the fault zone with a higher degree of exhumation, that is, the fault zone that thousands of years ago was located near the area crust where earthquakes are initiated in the area.

Thanks to this work, in addition to an image of failure, they found traces of past earthquakes, particularly that of 1674, which has been identified by researchers on existing trenches in the ground but whose confirmation is pending an accurate dating by Carbon 14. such testing was very similar to earthquake registered in May 2011, and the same "scars" are in historic buildings like the Palace of Guevara.

The following figure shows an outline of the survey situation "FAMSIS-ING" is displayed.

Its location is planned from greater depth survey conducted last year.

Thanks to the information provided by this survey and excavations auxiliary been established fault structure.

This consists of a band of more than 100 m width crushed rock which geologists call as flour fault and that has been generated by the fracturing associated with the repetition of thousands of earthquakes in the last million years.

This structure has made it possible to define precisely the point where it will proceed to install the seismograph in depth.

Source: Ayuntamiento de Lorca