2024-03-29T15:20:49Z
http://revistes.ub.edu/index.php/index/oai
oai:revistes.ub.edu:article/8016
2022-02-10T17:21:43Z
GEOACTA:GEOLIT
driver
v2
http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.7
2022-02-10T17:21:43Z
U
Vol. 13 No. 2 (2015): Selected contributions from the 7th Iberian Conference on Coastal Geomorphology (JGEOLIT2013), Oviedo (Spain); 167
Shore platform and cliff notch transitions along the La Paz Peninsula, southern Baja, Mexico
TRENHAILE, A.S.; Department of Earth and Environmental Sciences. University of Windsor. Windsor, Ontario, Canada, N9B 3P4. Tel.: +001 519 253 3000 ext 2184; Fax: +001 519 973 7081.
PORTER, N.I.; Department of Earth and Environmental Sciences. University of Windsor. Windsor, Ontario, Canada, N9B 3P4. Tel.: +001 519 253 3000 ext 2184; Fax: +001 519 973 7081.
PRESTANSKI, K.; Department of Earth and Environmental Sciences. University of Windsor. Windsor, Ontario, Canada, N9B 3P4. Tel.: +001 519 253 3000 ext 2184; Fax: +001 519 973 7081.
2015-06-22
Copyright
Geologica Acta is the property of the UB, GEO3BCN, IDAEA and UAB. Geologica Acta must be cited for any partial or full reproduction. Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows anyone to reproduce and disseminate the content of the journal and even make derivative works crediting authorship and provenance and distributing possible derivative works under the same or an equivalent license.
Author Rights
Authors retain the copyright on their papers and are authorized to post them on their own web pages or institutional repositories. The copyright was retained by the journal from the year 2003 until 2009. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission from Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.
url:http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.7
Array
Increasing exposure to wave action produces a northerly transition from high tidal notches to shore platforms inthe andesitic lahar deposits of the La Paz Peninsula, southern Baja, Mexico. Twenty-four notches were surveyedand wear pins were cemented into the apex of each notch. Thirty-six transverse micro-erosion meter (TMEM)stations were installed on three surveyed platforms. Field measurements were made over a 2.5 year period.The wear pins suggested notch backwearing (horizontal erosion) is <2mm yr-1. The shore platforms were fairlynarrow (a few tens of metres) and steeper (1º) than most platforms in similar microtidal environments, reflectinga weak wave environment and resistant rocks. Mean TMEM downwearing (vertical erosion) rates for each of thethree platforms ranged from 0.14mm yr-1 to 0.42mm yr-1. There was a good relationship between notch height(difference in elevation between the floor and the roof at the front of the notch) and exposure to wave action, butnotch depth is time-dependent and the relationship with exposure was not statistically significant. Notch heightwas also related to the orientation and wave fetch of the site. Field evidence suggested that the notches were notproduced by bioerosion or chemical weathering but by alternate wetting and drying or salt weathering from hightidal immersion and wave-generated splash and spray. Coastal morphology is fairly well adjusted to present sealevel although notch occurrence in the upper portion of the high tidal zone suggests that there is slow tectonic uplift in this region.
oai:revistes.ub.edu:article/8468
2022-02-10T17:21:43Z
GEOACTA:GEOLIT
driver
v2
http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.5
2022-02-10T17:21:43Z
U
Vol. 13 No. 2 (2015): Selected contributions from the 7th Iberian Conference on Coastal Geomorphology (JGEOLIT2013), Oviedo (Spain); 137
Bedform variability and flow regime in a barrier-inlet system. The mesotidal Piedras mouth (Huelva, SW Spain)
MORALES, J.A.; Departamento de geología, universidad de Huelva. Avda. 3 de marzo, s/n, 21007 Huelva, Spain.
DELGADO, I.; Departamento de geología, universidad de Huelva. Avda. 3 de marzo, s/n, 21007 Huelva, Spain.
GUTIÉRREZ-MAS, J.M.; Departamento de Ciencias de la Tierra, Universidad de Cádiz, Campus Río San Pedro, s/n, Puerto Real, Cádiz, Spain.
2015-06-22
Copyright
Geologica Acta is the property of the UB, GEO3BCN, IDAEA and UAB. Geologica Acta must be cited for any partial or full reproduction. Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows anyone to reproduce and disseminate the content of the journal and even make derivative works crediting authorship and provenance and distributing possible derivative works under the same or an equivalent license.
Author Rights
Authors retain the copyright on their papers and are authorized to post them on their own web pages or institutional repositories. The copyright was retained by the journal from the year 2003 until 2009. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission from Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.
url:http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.5
Array
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 towards the mouth and central sector of the tidal channel. The process is reversed during tidal floods. During neap tides, larger bedforms maintain their geometry and position, whereas small ripples are re-oriented under different tidal conditions. Sand patches, dunes and ripples are interpreted as sediment bypassing zones. Large forms indicate high energy flow, which can only migrate when flow velocity reaches threshold values for the movement, with net sand transport towards open areas. Depositional features indicate low, moderate, and high-energy conditions. Here, a depositional regime dominated by sediment accommodation is dominant, where sandy sediments are continuously remobilized, transported and re-deposited, even closer to the estuarine mouth. In inner zones finer particles, such as clay and silt, are transported by tides as suspended matter and deposited in protected inner areas. The final results are long narrow tidal flats, which alternate with sandy areas dominated by erosion.
oai:revistes.ub.edu:article/9231
2022-02-10T17:21:43Z
GEOACTA:GEOLIT
driver
v2
http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.2
2022-02-10T17:21:43Z
U
Vol. 13 No. 2 (2015): Selected contributions from the 7th Iberian Conference on Coastal Geomorphology (JGEOLIT2013), Oviedo (Spain); 97
GIS as a tool to detect flat erosional surfaces in coastal areas: a case study in North Spain
DOMÍNGUEZ-CUESTA, M.J.; Department of Geology, University of Oviedo. C/ Arias de Velasco s/n, 33005, Oviedo, Spain. Fax: 00 34 985 103 103
JIMÉNEZ-SÁNCHEZ, M.; Department of Geology, University of Oviedo. C/ Arias de Velasco s/n, 33005, Oviedo, Spain. Fax: 00 34 985 103 103
GONZÁLEZ-FERNÁNDEZ, J.A.; Department of Geology, University of Oviedo. C/ Arias de Velasco s/n, 33005, Oviedo, Spain. Fax: 00 34 985 103 103
QUINTANA, L.; Department of Geology, University of Oviedo. C/ Arias de Velasco s/n, 33005, Oviedo, Spain. Fax: 00 34 985 103 103
FLOR, G.; Department of Geology, University of Oviedo. C/ Arias de Velasco s/n, 33005, Oviedo, Spain. Fax: 00 34 985 103 103
FLOR-BLANCO, G.; Department of Geology, University of Oviedo. C/ Arias de Velasco s/n, 33005, Oviedo, Spain. Fax: 00 34 985 103 103
2015-06-22
Copyright
Geologica Acta is the property of the UB, GEO3BCN, IDAEA and UAB. Geologica Acta must be cited for any partial or full reproduction. Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows anyone to reproduce and disseminate the content of the journal and even make derivative works crediting authorship and provenance and distributing possible derivative works under the same or an equivalent license.
Author Rights
Authors retain the copyright on their papers and are authorized to post them on their own web pages or institutional repositories. The copyright was retained by the journal from the year 2003 until 2009. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission from Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.
url:http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.2
Array
The delimitation of flat surfaces, such as marine or continental terraces, can be easily done if they are wellpreserved by using classic techniques such as fieldwork and photointerpretation. However, subsequent landscapeerosion can modify their initial morphology, hindering their recognition. This paper presents a methodologydesigned to identify and delineate flat erosional surfaces (known as rasas) in a sector of 1,228km2 in theCantabrian coast (eastern Asturias, N Spain). The spatial distribution of rasas was quantitatively established by comparing the Digital Terrain Model (DTM) with previously available information about flat surfaces alreadymapped. From a lithological point of view, rasas are modelled on Ordovician quartzite (9.7km2 of 1,228) mainlybetween 132–232m above sea level (a.s.l.) altitude and on Carboniferous limestone (2.9km2 of 1,228) mainlybetween 24–69m a.s.l. The use of Geographic Information Systems (GIS) combined with a quantitative analysisof the relief (using the hypsometric method) allowed us to develop a predictive approach for flat erosionalsurface detection. The methodology has been tested and validated in areas in which there were no erosionalsurfaces previously mapped. The results reveal new surfaces modelled on Ordovician quartzite (0.43km2), ataltitudes ranging from 200 to 250m, on Jurassic mixed formations (35.9km2) at 150–175m altitude, and onEocene limestone (1.1km2) at 110–120m altitude.
oai:revistes.ub.edu:article/9700
2022-02-10T17:21:43Z
GEOACTA:GEOLIT
driver
v2
http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.3
2022-02-10T17:21:43Z
U
Vol. 13 No. 2 (2015): Selected contributions from the 7th Iberian Conference on Coastal Geomorphology (JGEOLIT2013), Oviedo (Spain); 107
Dynamics and morpho-sedimentary interactions in the lower mesotidal estuary of Villaviciosa (NW Spain): A management proposal
FLOR, G.; Department of Geology. GeoQUO Research Group. Geomorphology and Quaternary, University of Oviedo. Arias de Velasco, s/n. 33005, Oviedo, Asturias.
FLOR-BLANCO, G.; Department of Geology. GeoQUO Research Group. Geomorphology and Quaternary, University of Oviedo. Arias de Velasco, s/n. 33005, Oviedo, Asturias.
REY, J.; Esgemar, S.A. Estudios Geológicos Marinos. Local M5 frente al Muelle 7, Puerto de Málaga, 29001, Málaga.
2015-06-22
Copyright
Geologica Acta is the property of the UB, GEO3BCN, IDAEA and UAB. Geologica Acta must be cited for any partial or full reproduction. Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows anyone to reproduce and disseminate the content of the journal and even make derivative works crediting authorship and provenance and distributing possible derivative works under the same or an equivalent license.
Author Rights
Authors retain the copyright on their papers and are authorized to post them on their own web pages or institutional repositories. The copyright was retained by the journal from the year 2003 until 2009. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission from Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.
url:http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.3
Array
The accumulation of sediment in the mouth of Villaviciosa estuary (NW Spain) is becoming an obstacle for the safe navigation in this estuary. One sector of its outer inlet is characterised by a broad shoal linked with a longshore bar of a beach, whose erosion is causing the silting of this area. On this basis, this paper aims to describe the processes that occurred in the lower part of the estuary due to the anthropogenic activities in the channel and inlet. For this purpose, several measurements were made in the water column and in the sedimentary bottoms to characterise the processes that occur in this area. Based on these results, a dynamic and morpho-sedimentary model was developed to examine the interactions between the lower estuary and the exposed part of the confining barrier beach, which allows to establish the evolutionary trends of sedimentary bottoms linked to the marina of El Puntal. Different management measures are carried out to reduce the impact of the sediment accumulation on the navigability, such as periodically dredging in the inlet of the estuary, and the subsequent dumping of the sediments in areas near to the closure depth. Consequently, future retreat of narrow inlet and sandy shoal can be avoided, maintaining the sedimentary volume in the system.
oai:revistes.ub.edu:article/9712
2022-02-10T17:21:43Z
GEOACTA:GEOLIT
driver
v2
http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.1
2022-02-10T17:21:43Z
U
Vol. 13 No. 2 (2015): Selected contributions from the 7th Iberian Conference on Coastal Geomorphology (JGEOLIT2013), Oviedo (Spain); 85
Long term recovery rates obtained using RFID technology at a mixed beach
CASAMAYOR, M.; Instituto de Oceanografía y Cambio Global. Universidad de Las Palmas de Gran Canaria. Campus Universitario Tafira, 35017 Las Palmas de Gran Canaria.
ALONSO, I.; Instituto de Oceanografía y Cambio Global. Universidad de Las Palmas de Gran Canaria. Campus Universitario Tafira, 35017 Las Palmas de Gran Canaria.
CABRERA, J.; Instituto Universitario de Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería, Universidad de Las Palmas de Gran Canaria
RODRÍGUEZ, S.; Instituto de Oceanografía y Cambio Global. Universidad de Las Palmas de Gran Canaria. Campus Universitario Tafira, 35017 Las Palmas de Gran Canaria.
SÁNCHEZ-GARCÍA, M.J.; Instituto Universitario de Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería. Universidad de Las Palmas de Gran Canaria. Campus Universitario de Tafira, 35017 Las Palmas de Gran Canaria.
2015-06-22
Copyright
Geologica Acta is the property of the UB, GEO3BCN, IDAEA and UAB. Geologica Acta must be cited for any partial or full reproduction. Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows anyone to reproduce and disseminate the content of the journal and even make derivative works crediting authorship and provenance and distributing possible derivative works under the same or an equivalent license.
Author Rights
Authors retain the copyright on their papers and are authorized to post them on their own web pages or institutional repositories. The copyright was retained by the journal from the year 2003 until 2009. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission from Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.
url:http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.1
Array
Recovery rates were obtained by radio frequency identification (RFID) technology in pebbles and cobbles at San Felipe beach, Gran Canaria. The aim of this work was to define which factors affected the recovery of tagged gravels. Several tests were performed to determine the detection depth threshold, and 16 field experiments were carried out over seventeen months after tracer deployment on the beach. Recovery rates are highly variable with time, ranging from 72.2% in the first recovery session to 25.8% in the last one. Nevertheless, a nearly stable situation was found for the final eight months. Apart from the effect of time, there were several factors that affected the recovery rate. Some of these were related to the particle, such as the position of the tag within the particle, as well as its weight, size and shape. Two environmental factors were considered. First, the elevation of the tracer on the beach showed that the recovery rate was higher with particles located above the storm berm. Second, wave height, which showed no relation with recovery rates even though during the experiment significant storms and periods of calm took place.
oai:revistes.ub.edu:article/13740
2022-02-10T17:21:43Z
GEOACTA:GEOLIT
driver
v2
http://revistes.ub.edu/index.php/GEOACTA/article/view/13740
2022-02-10T17:21:43Z
U
Vol. 13 No. 2 (2015): Selected contributions from the 7th Iberian Conference on Coastal Geomorphology (JGEOLIT2013), Oviedo (Spain)
Foreword
FLOR-BLANCO, G.; Universidad de Oviedo
FLOR, G.; Universidad de Oviedo
PANDO, L.; Universidad Oviedo.
MORALES, J.A.; Universidad de Huelva.
2015-06-22
Copyright
Geologica Acta is the property of the UB, GEO3BCN, IDAEA and UAB. Geologica Acta must be cited for any partial or full reproduction. Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows anyone to reproduce and disseminate the content of the journal and even make derivative works crediting authorship and provenance and distributing possible derivative works under the same or an equivalent license.
Author Rights
Authors retain the copyright on their papers and are authorized to post them on their own web pages or institutional repositories. The copyright was retained by the journal from the year 2003 until 2009. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission from Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.
url:http://revistes.ub.edu/index.php/GEOACTA/article/view/13740
Array
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oai:revistes.ub.edu:article/13756
2022-02-10T17:21:43Z
GEOACTA:GEOLIT
driver
v2
http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.4
2022-02-10T17:21:43Z
U
Vol. 13 No. 2 (2015): Selected contributions from the 7th Iberian Conference on Coastal Geomorphology (JGEOLIT2013), Oviedo (Spain); 123
Recent evolution of the river mouth intertidal zone at the Río San Pedro tidal channel (Cádiz Bay, SW Spain): controlling factors of geomorphologic and depositional changes
GUTIÉRREZ-MAS, J.M.; Department of Earth Sciences. Faculty of Marine and Environmental Sciences. Cádiz University (Spain). Campus Universitario Río San Pedro s/n, 11510-Puerto Real (Cádiz, Spain).
GARCÍA-LÓPEZ, S.; Department of Earth Sciences. Faculty of Marine and Environmental Sciences. Cádiz University (Spain). Campus Universitario Río San Pedro s/n, 11510-Puerto Real (Cádiz, Spain).
2015-06-22
Copyright
Geologica Acta is the property of the UB, GEO3BCN, IDAEA and UAB. Geologica Acta must be cited for any partial or full reproduction. Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows anyone to reproduce and disseminate the content of the journal and even make derivative works crediting authorship and provenance and distributing possible derivative works under the same or an equivalent license.
Author Rights
Authors retain the copyright on their papers and are authorized to post them on their own web pages or institutional repositories. The copyright was retained by the journal from the year 2003 until 2009. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission from Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.
url:http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.4
Array
Sedimentary and photogrammetric analysis of a sector of Cádiz Bay (SW Spain), including the intertidal zone on the left bank of the Río San Pedro tidal channel, were performed to understand its environmental evolution and the main factors that controled it. The study of this especially vulnerable environment has allowed to establish its depositional and morphological responses to the dynamic processes caused by recent environmental or climate changes. In the bank of the Río San Pedro tidal channel, there is a well-developed saltmarsh, which alternates with sandy beaches the data indicate erosional processes. The saltmarsh retreat rate was estimated in 0.65m/yr from 1977 to 2008. In this time-period, the tidal channel experienced a lateral displacement toward the SE of 1.24m/yr, and the beach width decreased from 50 to 21m. Three evolutionary stages were established: a youth stage, represented by a relatively high water energy beach environments; a maturity stage: represented by saltmarsh with deposition of mud and halophyte vegetation; a reactivation stage: represented by erosive features in the saltmarsh, such as tidal pools, tidal channel, etc. The geological location of Cádiz, close to the Eurasian–African plate boundary, account for its relatively high seismic and tsunami activity, that caused significant depositional changes in the area. Others important factors controlling the sedimentation are: first the tides, followed by the waves and the proximity to a sand source, such as the sandy mantle of La Algaida.
oai:revistes.ub.edu:article/13757
2022-02-10T17:21:43Z
GEOACTA:GEOLIT
driver
v2
http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.6
2022-02-10T17:21:43Z
U
Vol. 13 No. 2 (2015): Selected contributions from the 7th Iberian Conference on Coastal Geomorphology (JGEOLIT2013), Oviedo (Spain); 155
Characterization of wind-blown sediment transport with height in a highly mobile dune (SW Spain)
NAVARRO, M.; Applied Physics Dept., Sea Sciences Faculty. University of Cadiz, CASEM, Campus Universitario Puerto Real, 11510- Puerto Real, Cádiz, Spain.
MUÑOZ-PEREZ, J.J.; Applied Physics Dept., Sea Sciences Faculty. University of Cadiz, CASEM, Campus Universitario Puerto Real, 11510- Puerto Real, Cádiz, Spain.
ROMÁN-SIERRA, J.; Applied Physics Dept., Sea Sciences Faculty. University of Cadiz, CASEM, Campus Universitario Puerto Real, 11510- Puerto Real, Cádiz, Spain.
RUIZ-CAÑAVATE, A.; Applied Physics Dept., Sea Sciences Faculty. University of Cadiz, CASEM, Campus Universitario Puerto Real, 11510- Puerto Real, Cádiz, Spain.
GÓMEZ-PINA, G.; Demarcación de Costas Andalucía-AtlánticoCádiz, Spain.
2015-06-22
Copyright
Geologica Acta is the property of the UB, GEO3BCN, IDAEA and UAB. Geologica Acta must be cited for any partial or full reproduction. Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows anyone to reproduce and disseminate the content of the journal and even make derivative works crediting authorship and provenance and distributing possible derivative works under the same or an equivalent license.
Author Rights
Authors retain the copyright on their papers and are authorized to post them on their own web pages or institutional repositories. The copyright was retained by the journal from the year 2003 until 2009. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission from Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.
url:http://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2015.13.2.6
Array
The Valdevaqueros dune is located at one of the windiest points of Europe, where the frequent occurrence ofstrong easterly winds has generated a highly mobile dune. Several rotating cup anemometers in vertical array anda self-designed vertical sand trap, were placed to retain the drift sands at different heights over the surface in orderto determine theoretical and actual sand transport rates in the Valdevaqueros dune system. General results showthat 90% of the wind-blown sand is transported within the first 20cm above the dune crest surface. Theoretical transport rates based on different empirical formulae were 0.33 to 0.78 times the in-situ sand transport rate detected,which was 2.08·10-2kgm-1s-1 under moderate wind power (mean speed ranging from 8.4 to 17.9ms-1). Analysis ofdifferent statistical grain-size parameters helped to understand sand transport distribution at different heights.