Miguel Gomez-Heras

Miguel Gomez-Heras
Universidad Autónoma de Madrid | UAM · Geology and Geochemistry

Dr Geology

About

151
Publications
70,780
Reads
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2,305
Citations
Citations since 2016
42 Research Items
1549 Citations
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
Introduction
My research is mainly focused on the material controls on rock weathering, both in natural environments and in the context of natural and stone-built heritage. I have special interest on IR Thermography and other Non-Destructive Techniques for monitoring weathering.
Additional affiliations
September 2015 - October 2016
Institute of Geosciences
Position
  • Research Assistant
March 2015 - September 2015
Spanish National Research Council
Position
  • Visiting Researcher
March 2013 - February 2015
Universidad Politécnica de Madrid
Position
  • Researcher
Education
September 2008 - June 2009
Queen's University Belfast
Field of study
  • Education
March 2001 - June 2005
September 1995 - September 2000

Publications

Publications (151)
Article
Full-text available
Moisture is one of the most important factors causing building stone decay and rain penetration is one of the leading factors. Particularly, wind-driven rain spells, which are becoming increasingly common and seasonal as a result of climate change. Historic buildings' sometimes intricate design features can be a factor multiplying meteorological an...
Article
Full-text available
Wildfires are one of the main threats of natural areas and often fires can affect protected or heritage areas and properties, in which the preservation requirements demand the use of non-destructive techniques (NDTs). The magnetic susceptibility is an NDT that provides information on the mineralogical composition of the materials but has never been...
Poster
Full-text available
Presentación del proyecto RESCUhE en las I Jornadas Científico-Técnicas del CN IGME-CSIC
Article
Full-text available
Fire is a major decay agent of rocks and can generate immediate catastrophic effects as well as directional and anisotropic damage that affect long-term weathering processes. Temperature increase is the most relevant factor, among other components in a fire, generating mineral transformations and bulk mechanical damage. Mineralogical changes at hig...
Preprint
Full-text available
Uniaxial compressive strength (UCS) is the most used parameter to measure rock strength. However, restrictions in sampling large volume of material, the need of very large set of results and onsite characterisation of UCS non-destructively are requirements in many scientific and engineering investigations. The estimation of UCS from a single non-de...
Article
Heating historic buildings always entails a greater or lesser impact on indoor air temperature and humidity, on which the conservation of historic interiors depends. As modern rehabilitation prioritises such interiors, local heating is the system of choice to prevent possible harm while delivering high levels of occupant comfort. Such heating syste...
Article
Uniaxial compressive strength (UCS) is one of the most important parameters in rock mechanics. Nevertheless, there are instances when it is not advisable to perform UCS standardised tests, because it is not possible to sample or because it is not feasible to obtain a significant enough set of results. Leeb hardness (LHD) is used for estimating UCS...
Chapter
Full-text available
RESUMEN Los sistemas habituales de geoindicadores no son adecuados para su aplicación en geconservación porque están diseñados para identificar cambios en los sistemas geológicos pero no para evaluar su significado en términos de protección ni las necesidades de gestión del lugar. A partir de esta conclusión, se reflexiona acerca de las característ...
Chapter
Full-text available
Los sistemas habituales de geoindicadores no son adecuados para su aplicación en geconservación porque están diseñados para identificar cambios en los sistemas geológicos pero no para evaluar su significado en términos de protección ni las necesidades de gestión del lugar. A partir de esta conclusión, se reflexiona acerca de las características que...
Article
This work aims at providing an overview regarding accessibility conditions for people with functional diversity among the 15 UNESCO Global Geoparks (UGGs) located in the Iberian Peninsula – 4 in Portugal and 11 in Spain – from the point of view of a disabled user wishing to visit a Geopark. Website information and a questionnaire composed of close...
Article
Morphometric characterisation is particularly relevant in the study of geomorphological heritage. 3D modelling techniques have been proven as very useful tools to recognise, characterise and valorise geomorphosites. Bedrock rivers account for one of the most outstanding aspects within geomorphological heritage due to the amount of distinctive and a...
Conference Paper
Full-text available
Infrared thermography is a non-destructive and contactless technique which has been applied in conservation science principally on historical buildings and structures, however the studies on glassy materials are scarce. In this study, the thermographic assessment of glasses, enamels and grisailles from stained glass windows has been carried out.
Article
Full-text available
Conflict damage to heritage has been thrust into the global spotlight during recent conflict in the Middle East. While the use of social media has heightened and enhanced public awareness of this ‘cultural terrorism’, the occurrence of this type of vandalism is not new. In fact, as this study demonstrates, evidence of the active targeting of sites,...
Article
This article describes the use of non- or minimally destructive methods to study damp in San Juan Bautista Church at Talamanca de Jarama in the Spanish province of Madrid. The combination of ground penetrating radar (GPR), electrical resistivity tomography (ERT) and wireless sensor network (WSN) techniques provided sub-surface information, while da...
Article
This paper reports the analyses of infrared thermography images of two stained‐glass windows with the objective of the in‐situ characterization of this type of artworks. The analyses were carried out by active thermography. The observations revealed that glasses absorbed the long‐wave IR radiation emitted by the halogen lamps and their apparent sur...
Article
Full-text available
Taphonomic processes play an important role in the preservation of small morphological features such as granulation or pits. However, the assessment of these features may face the issue of the small size of the specimens and, sometimes, the destructiveness of these analyses, which makes impossible carrying them out in singular specimen, such as hol...
Chapter
The design and first results of a system for monitoring geoconservation and public use of two national geosites located in Cabañeros National Park (Central-SW Spain) are reported. The system collects data on the frequency and magnitude of three geological processes: effective frost weathering and freeze-thaw cycles with the presence of water in fis...
Article
Pothole formation and development may be influenced by joint sets and other heterogeneities within bedrock, as well as by hydraulics. Previous research indicates that most potholes found in rivers of the mountainous Spanish Central System exhibit preferred orientations associated with dominant joints and correlate more strongly with variations in s...
Conference Paper
Full-text available
Previous experiences with people with both physical and intellectual functional diversity around palaeontological issues have demonstrated the important value of science outreach directed to people with disabilities. The aforementioned practices act twofold: as a learning tool and also improving the quality of life of the participants and thus, the...
Conference Paper
Full-text available
This communication presents how a stratigraphy fieldtrip adapted to people with visual impairment was prepared and carried out. This fieldtrip aimed to promote scientific knowledge on Earth sciences to people with visual impairment and to inspire Earth scientists to take into account the needs of people with disabilities when designing public engag...
Article
Full-text available
Projectile damage to building stone is a widespread phenomenon. Sites damaged 100 years ago during the First World War still see daily use, while in a more contemporary setting numerous reports show the damage to buildings in Babylon, Mosul and Palmyra. While research has been carried out on the long-term effects of conflict such as fire damage, li...
Conference Paper
Full-text available
Mokattam limestone is the most frequent building stone used in the cultural heritage buildings in Historic Cairo (Egypt) and it is susceptible to the ongoing effects of salt weathering. A purpose-made simulation chamber was used to test in the laboratory the salt weathering on limestone samples from an active quarry at Helwan area (30 km, south Cai...
Conference Paper
Mokattam limestone is the most frequent building stone used in the cultural heritage buildings in Historic Cairo (Egypt) and it is susceptible to the ongoing effects of salt weathering. A purpose-made simulation chamber was used to test in the laboratory the salt weathering on limestone samples from an active quarry at Helwan area (30 km, south Cai...
Article
The complexities of evaporation from structurally and mineralogically heterogeneous sandstone (Locharbriggs Sandstone) are investigated through a laboratory-based experiment in which a variety of environmental conditions are simulated. Data reported demonstrate the significance of material-environment interactions on the spatial and temporal variab...
Article
Full-text available
Building decay is a dynamic process in which time is a key factor, and moisture-induced decay is no exception to the rule. Mapping strategies may hinder time-based moisture damage assessment and control in historic buildings, however. The time factor has often been absent in the mapping methodologies deployed to date, either because the studies con...
Article
Fires occurred in the past are usually part of the history of buildings, related to specific structures such as ovens or accidental causes. They are usually the cause of either catastrophic or longterm damage in the building materials that strongly depends on the time and temperature of firing. Although several analytical methods have been tested t...
Book
Full-text available
Ceramic material is certainly a key element in the cultural heritage, particularly in historical buildings, from antiquity to the present. Ceramics applied to architecture involves specific problems when addressing preservation, as well as conservation and restoration interventions. Knowledge about the origin and selection of suitable raw materials...
Conference Paper
Most Egyptian limestones contain clays. Volume change of clay minerals (swelling / shrinking) induced by changing environmental conditions, especially humidity, causes accelerated physical deterioration of limestone. Petrographic investigation by scanning electron microscopy (SEM) of Helwan limestone (biomicritic limestone) revealed the existence o...
Chapter
Full-text available
Inorganic raw materials, here termed geomaterials, derived from the Earth's crust and used in construction after appropriate processing make a genetically and functionally varied group of mineral resources. Although their basic functions have remained almost unchanged for centuries, some new attributes, meanings and impacts on society are still eme...
Article
Full-text available
The area known as Pedriza de Manzanares forms part of the Upper Manzanares River Basin and of the recently (June 2013) listed Sierra de Guardarrama National Park, located in the Spanish province of Madrid. The region is home to Late Palaeozoic granites characteristic of the Spanish Central Systam, which were intruded during the Variscan Orogeny and...
Chapter
This study presents a new experimental chamber, which builds upon previous methods of testing salt weathering. This method is based on capillary rising in samples, as this corresponds to the actual imbibition process in building stone. This set-up allows control in setting both a specific thermal regime and cycling temperatures. Some of the signifi...
Article
Full-text available
The relationship between the static and dynamic elastic modulus in rock materials has been frequently addressed in scientific literature. Overall, when it comes to the study of materials with a wide range of elastic moduli, the functions that best represent this relationship are non-linear and do not depend on a single parameter. In this study, the...
Conference Paper
Full-text available
Air pollution usually derives in the development of black crusts on the surface of cultural heritage materials. A methodological approach for the morphological, mineralogical and chemical characterization of black crusts developed on limestone on historic buildings of Cairo, Milano, Budapest and Madrid, besides suspended and settling particulate ma...
Conference Paper
Full-text available
Se presenta el diseño de un sistema instrumental para la monitorización de la geoconservación y el uso público de un elemento patrimonial (icnofósiles de gusanos gigantes en un estrato cuarcítico del Ordovícico Inferior) en el LIG del Boquerón del Estena, situado en el Parque Nacional de Cabañeros (Toledo-Ciudad Real). El sistema recoge datos de la...
Chapter
Full-text available
The knowledge that societies have of their geological environment and of the materials used in their heritage is of great importance for the sustainable use and conservation of traditional natural stone architecture. Similar weathering mechanisms occur in natural environments and the built environment and, in both cases, weathering may endanger bot...
Article
Full-text available
ABSTRACT: Limestone is one of the most frequent building stones used in monuments in Egypt from ancient Egyptian times and salt weathering is one of the main threats to these monuments. During this work, cylindrical limestone samples (2 cm diameter and approx. 4 cm length) from Mokattam group, one of the most frequent materials in historic Cairo, w...
Article
Full-text available
Limestone is one of the most frequent building stones used in monuments in Egypt from ancient Egyptian times and salt weathering is one of the main threats to these monuments. During this work, cylindrical limestone samples (2 cm diameter and approx. 4 cm length) from Mokattam group, one of the most frequent materials in historic Cairo, were subjec...