Juan ANTONIO Morales

Juan ANTONIO Morales
Universidad de Huelva | UHU · Faculty of Experimental Sciences

PhD

About

143
Publications
21,434
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2,346
Citations
Citations since 2017
66 Research Items
798 Citations
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2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
Additional affiliations
May 1990 - present
Universidad de Huelva
Position
  • Professor

Publications

Publications (143)
Article
This article can be found on The Conversation website: https://theconversation.com/a-qui-appartiennent-ces-empreintes-de-pieds-vieilles-de-300-000-ans-195953
Article
This article can be found on The Conversation website: https://theconversation.com/recently-found-neanderthal-footprints-in-the-south-of-spain-could-be-275-000-years-old-195346
Article
This article can be found on The Conversation website: https://theconversation.com/y-si-los-que-pasearon-por-donana-no-fueron-los-neandertales-193545
Article
Full-text available
Hominin footprints were recently discovered at Matalascañas (Huelva; South of Iberian Peninsula). They were dated thanks to a previous study in deposits of the Asperillo cliff to 106 ± 19 ka, Upper Pleistocene, making Neandertals the most likely track-makers. In this paper, we report new Optically Stimulated Luminescence dating that places the homi...
Poster
Full-text available
The dating of sites occupied by hominins is a key element in order to understand their evolution. It provides information on the spatio-temporal distribution of taxa, which is essential to infer their appearance, migration and disappearance. The knowledge of the chronological context is particularly important when studying hominin footprints since...
Article
Full-text available
The detachment and mobilization of boulders from rocky shore platforms by waves involves complex geomorphic and hydrodynamic processes. Understanding these processes requires precise information on the rates and patterns of movement of these megaclasts scaled against the wave conditions that generate boulder mobility. Repeat photogrammetry and stru...
Conference Paper
Full-text available
The NW step corresponds to the only sector not altered by the action of man that communicates part of the eastern bay with the western area of the outer bay of Cádiz. This area is delimited by different underwater shoals and rocky promontories that give it rare bathymetric and morpho-physiographic characteristics. This scarcity of available sedimen...
Conference Paper
Full-text available
The records of a sonographic survey on an underwater area of almost 140 km² located in front of the Bay of Cádiz, identified a fringe of over 40 km2 occupied by a large field of bedmarks of anthropic origin of over from more. The analysis of their distribution and configuration shows that they correspond to a large area where the repeated effects o...
Chapter
Throughout this book it has become clear that the coast is a place of permanent change. Coastal change is perceived as a hazard by humans, because people and their constructions are vulnerable to these changes. However, there is no real possibility of coastal change affecting humans if there is no exposure to it. In the previous sentence, the conce...
Chapter
Tidal inlets are channels that separate different barrier islands or are located between a barrier and the mainland. It is through these channels that the mechanism of tidal circulation between the open marine environment and the environments protected by the barrier takes place. Tidal deltas are sandy bodies located at the ends of the tidal inlets...
Chapter
The composition of the materials deposited on the coast depends on the clarity of the waters, the amount of suspended matter and the distribution of sediments by the currents that reach the coast, but, above all, on the sedimentary supply.
Chapter
The previous chapters have described how chemical and biological processes are active on all coasts, although it is the physical processes that determine the patterns of morpho-sedimentary evolution. However, on many coasts, chemical and biological processes exert the main control of sedimentation and, therefore, are directly responsible for coasta...
Chapter
Tidal flats are depositional surfaces where sedimentation of mud and sand occurs and that are located in the space limited by sea level between high and low waters. Because of their location, they are completely covered by water during high tide and are exposed to air at low tide. Obviously, these are tide-dominated environments and therefore have...
Chapter
Weathering residues and pyroclastic particles that reach the coast from the mainland, as well as any carbonate class generated in the marine environment, can be reworked, transported and deposited within the coastal system. Thus, these particles of sedimentary material end up being part of the sequence deposited in one of the coastal environments....
Chapter
In the previous chapters, the origin of siliciclastic sediments has been discussed, including how they reach the coast from the continent through the mechanical transport of particles generated by weathering processes. In addition to these solid particles, inland waters transport a dissolved ionic charge that comes from the chemical disintegration...
Chapter
Most of the world’s coasts develop in hard or cohesive materials typical of mountainous continental margins. Indeed, since the work of (Emery and Kuhn in Geol Soc Am Bull 93:644–654, 1982), the literature has commonly reported that 80% of the world’s coasts can be categorized as rocky or cliffs. However, these coasts do not usually appear in our mi...
Chapter
In the previous chapter we analyzed the processes that control the sedimentary contribution that reaches the coast from the mainland. However, significant amounts of sedimentary material can also come from the continental shelf through processes of a purely marine origin. These act in combination with the processes associated with tides and waves t...
Chapter
As described in the preceding chapters, coastal areas have been studied by a broad group of geological disciplines, each of which offers a different focus or approach to these areas and the environments developed therein.
Chapter
Based on the different perspectives of geological disciplines on the objectives in the studies of coastal geology, a variety of research methods are used.
Chapter
If one thing can be concluded from the previous chapters, it is that human economic and social activities are permanently threatened by coastal processes in both the long and short term. In addition, the natural balance of the coast is in turn threatened by these same human activities. This two-way interaction between humans and natural processes i...
Chapter
Barriers in general, and barrier islands in particular, constitute a significant system between coastal environments. They are sedimentary bodies made up mainly of sand, built by the action of the waves on the front of the mainland and separated from it by a body of water called a lagoon. The sedimentary building of the barriers can take place on t...
Chapter
The coast is the place where the sea meets the continent. It is obvious that the location of this meeting place depends on the height of the water level as well as on the height of the terrain. Both of these change over time. Sea level movements in absolute terms can have the same effects on the coast as vertical land movements. In fact, the coast...
Chapter
Throughout the chapters of this book, the state of current geological knowledge about the coast has been discussed.
Chapter
Like estuaries, deltas represent another kind of river mouth. In this case, the river has been able to accumulate such a significant amount of sediment that it has been able to build a large sedimentary structure, thus forming a coastal ledge.
Chapter
River mouths can be considered as transitional environments affected by river dynamics and marine processes (tides and waves). In general terms, there are two main types of river mouth: estuaries and deltas. The first of these are established as those systems where the main sedimentation occurs in a coastal valley, while in the second ones the sedi...
Chapter
As seen in the first chapter of this book, the coast can be defined as the fringe of terrain where the continent meets the sea. However, the coast is actually not so easy to define, since there are multiple variables involved. On the one hand, there are land fringes that can be affected by marine processes under certain conditions; on the other han...
Chapter
Beaches are widely represented sedimentary coastal environments, occupying about 20% of the world’s coastline. Like the rocky coasts, these are environments dominated by the action of waves, although in this case the genesis of beaches involves their cumulative effect. This type of sedimentary accumulation can be associated with different environme...
Chapter
Climate is the set of atmospheric variables existing in a given place over a long period of time. Among the variables that constitute climate are precipitation, atmospheric humidity, temperature, atmospheric pressure, insolation and wind. Climate should not be confused with weather, because, although the latter is an expression of the same variable...
Chapter
Changes in climate and sea level movements throughout Earth’s history have been accompanied by major changes in the oceans. On the one hand, there is evidence of numerous modifications in the environmental characteristics (physical, chemical and biological) of ocean waters. On the other hand, plate tectonics have provided a changing framework of th...
Chapter
Coastal environments are probably the most variable systems on the Earth’s surface. Many changes that occur on the coast are repetitive in space and in time, while others are slowly being produced by way of trends and others take place in the form of isolated events. It is also interesting to distinguish between the repetitive changes that occur in...
Chapter
The majority of the population of most of the world’s countries are based in coastal areas, a fact that has been true throughout history (Carter in Coastal Environments: An Introduction to the Physical, Ecological, and Cultural Systems of Coastlines, Academic Press, London, 1988). However, since the second half of the twentieth century, human activ...
Chapter
Defining a scientific discipline is not an easy task, because each concept has had its own historical evolution and been submitted to multiple points of view which have led to different definitions or even to distinct concepts. So, the study of geology, and particularly coastal geology, has undergone an evolution which has been intimately entwined...
Chapter
Ancient oceans and paleocontinents have combined to form coastal systems throughout Earth’s history. Many of these coastal systems have been preserved in the sedimentary record as stratigraphic formations corresponding to different geological periods. There is an abundance of scientific literature on many of these formations, especially those in Eu...
Chapter
The action of wind as a transport agent on the coast was analyzed in Sect. 9.3. Its role can be summarized by three different effects: (1) contribution of sand from the continent to coastal systems; (2) erosion by deflation on the surface of beaches; and (3) accumulation in coastal areas protected from waves. In this last sense, deposits of sand fr...
Chapter
Biological processes occur on all coasts to a greater or lesser extent. In many coastal environments these processes are overshadowed by the importance of the energy deployed by physical processes, and in others by the magnitude of chemical processes. However, in both cases organisms always play a role and have a major influence on the effect the d...
Chapter
The sea surface, far from remaining static, experiences periodic oscillations related to the gravitational pull of the orbiting spheres. These oscillations constitute the phenomenon called the tide.
Chapter
Every coast presents a variety of landforms and environments which have been classically described and classified by geographers and whose dynamics have been studied by geologists and coastal engineers.
Chapter
The waves are undulations of the surface between two fluids, water and air, that have a remarkable influence on coastal dynamics. This importance is manifested in the dynamic functioning and transport of sediments from open coastal areas. Waves are also the fundamental cause of the genesis and evolution of environments such as barrier islands and b...
Chapter
The action of waves, tides and marine currents, as well as their interaction with continental agents, is a continuous phenomenon of erosion, transport and deposition of material in cycles that mark the ordinary sedimentary dynamics of coastal systems. However, these ordinary dynamics are interrupted at certain times by specific phenomena that displ...
Article
Full-text available
Les empreintes de pieds sont un vestige paléoanthropologique unique représentant de brefs moments de vie. Elles fournissent de nombreuses informations comme la taille et la composition des groupes qui les ont laissés mais sont rares dans le registre fossile par rapport au matériel ostéologique et archéologique. Cette rareté est notamment importante...
Article
Les empreintes de pieds sont un vestige paléoanthropologique unique représentant de brefs moments de vie. Elles fournissent de nombreuses informations comme la taille et la composition des groupes qui les ont laissés mais sont rares dans le registre fossile par rapport au matériel ostéologique et archéologique. Cette rareté est notamment importante...
Article
Full-text available
For more than 40 years, the industrial complex which developed near Huelva (in SW Spain) produced a huge amount of phosphogypsum as a waste product of manufacturing fertilizers. This waste was stockpiled in a stack 25 m high, covering 1200 ha of what was once a salt marsh. The weight of that enormous amount of waste produced active subsidence in th...
Poster
Full-text available
Hominin footprints represent a unique vestige giving access to brief moments of life, an unusual time scale in archaeology or palaeoanthropology. They provide information not only on the locomotor behaviour of individuals (locomotor anatomy including soft tissue, motion capture) but also on the size and composition of the groups that made them, par...
Article
Lacustrine coasts, especially those associated with shallow highly fluctuating lakes, do not evolve in exactly the same way as marine coasts. Climate variability can significantly modify the morphology of the water body, affecting the lake surface area, the available fetch, and the water depth, resulting in possible changes to wave generation and p...
Article
This article can be found on The Conversation website: https://theconversation.com/un-paseo-por-la-playa-de-donana-asi-encontramos-las-primeras-huellas-de-neandertales-en-la-peninsula-iberica-157338
Article
Full-text available
Here, we report the recent discovery of 87 Neandertal footprints on the Southwest of the Iberian Peninsula (Doñana shoreline, Spain) located on an upper Pleistocene aeolian littoral setting (about 106 ± 19 kyr). Morphometric comparisons, high resolution digital photogrammetric 3D models and detailed sedimentary analysis have been provided to charac...
Article
Morales, R.; Borrego, J.; Carro, B.M., and Morales, J.A, 2020. Depositional facies along the banks of Guadalquivir Estuary (SW Spain). In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp. 573–577. Coconut Creek (Florida), ISSN 0749-0208. The Guadalquivir Estuary is located at c...
Article
Morales, J.A.; Sedrati, M.; Boulmirate, O.; Borrego, J., and Carro, B.M., 2020. Measuring dimensions of ship-generated waves in Guadalquivir Estuary banks (SW Spain): Hydrodynamic considerations. In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp. 568–572. Coconut Creek (Flori...
Article
Full-text available
The Guadiana estuary is a coastal system located in the southwest of the Iberian Peninsula and is the natural border between Portugal and Spain. It is a rock-bounded estuary which extends along more than 40 km and is characterized by a semidiurnal mesotidal regime. This paper represents an approach to the bedload transport across two flow sections...
Conference Paper
Full-text available
In 2017, the proposal of 5 place names of underwater relief formations was submitted to the intergovernmental oceanic Commission of UNESCO. These shoals are located in the Bay of Cadiz, facing the cliff-lined coast of Rota. This rocky complex corresponds to deep foothills of the associated coastline, combining morphologies of positive relief scarp,...
Poster
Full-text available
In 2017, the proposal of 5 place names of underwater relief formations was submitted to the intergovernmental oceanic Commission of UNESCO. These shoals are located in the Bay of Cadiz, facing the cliff-lined coast of Rota. This rocky complex corresponds to deep foothills of the associated coastline, combining morphologies of positive relief scarp,...
Chapter
Spain is definitely a coastal country. The Spanish coast extends along more than 9000 Km and 22 of the 50 Spanish provinces have coastal edges over the Atlantic Ocean or the Mediterranean Sea (Fig. 1.1). In general terms it is a low altitude coast, but is too diverse displaying different littoral environments. The beaches are the most valuable envi...
Chapter
The estuary of the Odiel and Tinto rivers is located in the southwest of the Iberian Peninsula on the western Gulf of Cadiz (Atlantic Ocean). The Huelva estuary is constituted by the common mouth of the Odiel and Tinto Rivers in a “Y” shape oriented in a N-S direction across 35 km long incised valley. This estuary was generated after the Flandrian...
Chapter
Presently, there is a high degree of knowledge about the coastal dynamics of many segments of the coast. The highlights of the functioning of wind, waves, tides and currents in each one of the sectors composing the Spanish coast have been studied and described. The main geomorphologic and sedimentary features of, so as the depositional or erosional...
Chapter
Full-text available
The Guadiana Estuary is a good example of rock bounded estuary which consists of a single narrow estuarine channel with a meandering morphology imposed by faults systems affecting the hard geology of the substrate. Only along the last kilometers of the estuarine channel, the valley opens when Cenozoic Guadalquivir Basin formations appear. In this a...
Chapter
Full-text available
The Huelva Coast forms the littoral sector of the SW Iberian Peninsula which extends from the mouth of the Guadiana River, on the border with Portugal, to the mouth of the Guadalquivir River. From a physiographic point of view, the Huelva Coast can be considered a linear, low and sandy coast formed by long beaches, although it could be divided in d...
Chapter
This monograph presents the state of art of the geologic knowledge about the Spanish coast obtained through scientific research in the last 30 years. From a general point of view, coasts are the most quickly changing systems of the Earth. This is critical, since many human resources, such as the main part of economic and social activities, are loca...
Article
Full-text available
This paper describes and interprets the internal structure of the Aeolian dunes developed in two profiles of the coastal front of the Doñana spit using subsurface images recorded by Ground Penetrating Radar. The inside of these dunes shows two different types of internal structure. Some strings have a clear structure of stacking of through cross be...
Conference Paper
Full-text available
Several studies on barred beaches in settings with mesotidal to macrotidal regimes have focused on cross-shore and alongshore bar mobility. Whereas the general link between hydrodynamics, sediment transport and the response of the intertidal bars and shoreline evolution has been recognized in the literature, the role of coastal defense structures (...
Article
Full-text available
On coasts of tectonically active areas, where old tsunami deposits are in a fragmentary state, the study of paleo-tsunamis provides data for interpreting facies and processes. In order to recognize facies, a study has been carried out on a sector of the SW coast of Spain, where some historical tsunamis are documented, such as that caused by the Lis...
Chapter
Side-scan sonar is an acoustic technique to obtain accurate images of underwater beds. In estuarine channels these images reveal a variety of bedforms that enable determination of the dominant flow regime and hydrodynamic processes, especially related to bedload transport.
Article
Full-text available
The Tina Menor estuary is a highly confined incised valley with advanced sedimentary infilling. The outstanding feature of this estuary is its longitudinal zonation, which forms four segments from the outer to the inner limit: Mouth complex, Bay, Tidal flats and Upper channel. The innermost part of the Bay and the Tidal Flats (semi-reclaimed areas)...
Article
Full-text available
The Tina Menor estuary is a highly confined incised valley with advanced sedimentary infilling. The outstanding feature of this estuary is its longitudinal zonation, which forms four segments from the outer to the inner limit: Mouth complex, Bay, Tidal flats and Upper channel. The innermost part of the Bay and the Tidal Flats (semi-reclaimed areas)...
Article
Full-text available
Bedform fields from the Piedras River mouth (Huelva, SW Spain) have been studied using side-scan sonar techniques, combined with visual scuba-dives, and direct geometric measuring. The dominant flow regime has been determined from the results in these tidal environments, where erosive processes dominate during ebb, transporting sand as a bedload to...
Article
Full-text available
The morphology of many Spanish estuarine mouths has been modified over recent decades to improve access to the harbours located inside. The normal practice has been the construction of jetties along one or both sides of the mouth to improve the flow though the main estuarine channel and thereby prevent the formation of bars in the main channel bed...
Article
Full-text available
The estuary of the Guadiana River is located in the southwestern Iberian Peninsula and serves as border between Spain and Portugal for more than 40 km. This estuary consists of a narrow rock bounded channel with meandering morphology imposed by the geologic materials. Its mouth is affected by a mesotidal regime, with tidal ranges comprised between...
Article
Full-text available
The morphodynamic response of a mixed-energy ebb-tidal delta (Guadiana estuary, southern Portugal) and its down-drift barrier island (Canela Island) to channel relocation and stabilisation by jetties is examined using a series of sequential bathymetric maps and vertical aerial photographs spanning five decades. Morphological analysis indicates that...
Conference Paper
Full-text available
El desarrollo de una Carta Arqueológica, pasa por la necesaria familiarización con los términos Carta Arqueológica, Catálogo Arqueológico e Inventario Arqueológico; al estudiar la bibliografía apreciamos un solape entre criterios estrictamente científicos y la incorporación al lenguaje administrativo de categorías, que en ocasiones al estudiar los...
Article
Full-text available
The establishment of the flow regime in moderate and high energy coastal environments, such as those that are present in the Huelva coast (SW Spain), is interested to know the response of the environment to the action of usual seasonal hydrodynamic agents (tides and waves). The analysis of the variability of bedforms and their relationship with the...
Book
Full-text available
Ha llegado el turno de organizar las VII Jornadas de Geomorfología Litoral entre el 17 y 19 de julio de 2013, que se celebran en el marco del edificio del Campus de Llamaquique, donde se ubican Facultad y Departamento de Geología de la Universidad de Oviedo (Asturias). Para ello, nos comprometimos en Tarragona a traer este evento al espacio físico...
Chapter
Full-text available
Oceans Odyssey 2 presents the results of the discovery and archaeological survey of ten deep-water wrecks by Odyssey Marine Exploration. In the Western Approaches and western English Channel, a mid-17th century armed merchantman, the guns of Admiral Balchin's Victory (1744), the mid-18th century French privateer La Marquise de Tourny and six German...
Conference Paper
Full-text available
The 75m bulk cargo Empire Warrior was sunk after a successfully attack of III Reich German Luftwaffe squadron of Focke-Wulf Condor 300, at 5:14 in the morning of June 19 of 1941, one and half nautical mile from the river Guadiana mouth; while she was anchored near the sand bar waiting the arrival of the coast pilot to navigate upstream to the port...
Conference Paper
Full-text available
In this paper, we present the preliminary results of the preventive archaeological control of earthworks and underwater archaeological surveys developed during 2011 by the company Ánfora Gestión Integral del Patrimonio S.L, in the river Carreras Estuary. Those archaeological works allows understand the complex archaeological interest and the patrim...
Poster
Full-text available
The site is located about 3.5 nautical miles off the Portuguese coastline and 18 meters deep, she rests in a silty-muddy bed in Portuguese territorial waters. Damages caused by the explosion of the attack, the impact on the bottoms after its collapse and the illegal fishing with explosives have caused a collapse of the structure of the hull of the...
Poster
AIM AND METHODS During the summer of 2008 a Side-Scan sonar survey was developed in the area in order to elaborate a seabed mapping of the potential archaeological area; part of the aims were the delimitation of the area of archaeological remains and obtain a general perspective of degradation of this historical ship. This poster describes the cond...
Conference Paper
Full-text available
The Tina Mayor and Tina Menor estuaries are confined by narrow rocky mouths that only allow the formation of unevolved sedimentary barriers. The sedimentary estuarine valleys wedged between the rocky slopes are directly related to the geometry of the river valley, which produces circulation water bodies and sediments, with the twin influence of ebb...
Conference Paper
Full-text available
We include here the Teaching Project of the University of Huelva entitled "Virtual Geologic Field-Trips: A teaching experience developed by students". It is focused on the development of a webpage that shows our geological fieldtrips from the viewpoint of the students. The website includes several geologic itineraries with information about WHERE,...