Manuel BerrocosoUniversidad de Cádiz | UCA · Department of Mathematics
Manuel Berrocoso
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Publications (104)
The seismic event of the 2016 Amatrice earthquake and its subsequent aftershocks have provided a significant opportunity to study seismic waves and their effects on the Apennine región, a very active seismic area. This research utilizes GPS data from three geodetic networks (ItalPos, NetGEO, and RING) to analyze the seismic waves generated by the e...
This manuscript describes the design, development, and implementation of a prototype system based on seismogeodetic techniques, consisting of a low-cost MEMS seismometer/accelerometer, a biaxial inclinometer, a multi-frequency GNSS receiver, and a meteorological sensor, installed at the Doñana Biological Station (Huelva, Spain) that transmits multi...
The tectonic activity produced by the interaction between the Eurasian and African plates continually generates high seismic activity and the possibility of tsunamis occurring in the Gulf of Cadiz, Spain. The occurrence of these phenomena and the associated threat implies the need to implement a seismogeodesic system made up of a GNSS receiver, a s...
The area of the Betic Cordillera, located in Southern Spain, is an active earthquake region. On May 11 2011, a 5.1 magnitude earthquake occurred with epicenter near the town of Lorca. This seismic event was generated on the Al-hama de Murcia fault. In this paper we present the results of processing the GPS data corresponding to the time at which th...
Aerial frames and satellite imagery are widely recognized data sources from which to produce maps. For volcanoes, maps enable the quantification of erupted ash and the destruction caused.The last eruptive sequence on Deception Island was endured from 1967 to 1970. Analogue maps were produced via classical photogrammetric methods with a high degree...
The advent of GPS provided a new way of measuring surface displacements due to earthquakes by deploying GPS networks within active seismic areas. Japan is located in the confluence of several tectonic plates, hence its seismicity. In order to surveille this activity, one of wider GPS network in the world was deployed, i.e., GEONET. By processing da...
El material didáctico “Maths Puzzle: Manual para el profesorado” es un material para educadores, orientado a favorecer el aprendizaje de las matemáticas, en el aula o en casa, a través de actividades donde se evidencia la aplicabilidad de las matemáticas y su vinculación con el campo de la ingeniería, el sector tecnológico o la naturaleza.
Algunos...
El material didáctico “Maths Puzzle: Manual para el alumnado” es un material sencillo, directo y cercano con la intención de favorecer la motivación del alumnado hacia las matemáticas a través de actividades contextualizadas, donde se evidencia la aplicabilidad de las matemáticas en contextos como el campo de la ingeniería, el sector tecnológico o...
On 10 October 2011, a submarine eruption occurred in El Hierro island. Thus, the eruptive process in the Canary islands was reactivated after 40 years of inactivity. The main objective of this work is to evaluate, using Functional Data Analysis, how the surface deformation phenomenon explains the seismic–volcanic activity in the island. The GNSS-GP...
At present, different methods are used for processing GPS time series data obtained from a network of GNSS stations. Solutions converted to velocity and displacement allow the generation of different geodynamic models in areas influenced by tectonic and volcanic activity. This study focuses on the comparative analysis of the solutions obtained thro...
GNSS systems allow precise resolution of the geodetic positioning problem through advanced techniques of GNSS observation processing (PPP or relative positioning). Current instrumentation and communications capabilities allow obtaining geocentric and topocentric geodetic high frequencies time series, whose analysis provides knowledge of the tectoni...
GNSS geodetic time series analysis allows the study of the geodynamic behavior of a specific terrestrial area. These time series define the temporal evolution of the geocentric or topocentric coordinates obtained from geodetic stations, which are linear or non-linear depending, respectively, on the tectonic or volcanic–tectonic character of a regio...
Deception Island (South Shetland Islands) is one of the most active volcanoes in Antarctica, with more than 15 explosive eruptive events registered over the past two centuries. Recent eruptions (1967, 1969 and 1970) and volcanic unrest episodes in 1992, 1999 and 2014–15 demonstrate that the occurrence of future volcanic activity is a valid and pres...
Macaronesia is a complex oceanic region spanning three tectonic plates in the northeast Atlantic ocean. It is composed of four archipelagos, widely distributed and limited to the east by the Iberian Peninsula and north-western coast of Africa. This study aims to clarify recent Macaronesian kinematics from 19 GNSS stations located on the four archip...
Este trabajo presenta un estudio detallado para la determinación del nivel medio del mar (NMM), las constituyentes de marea y un geoide de precisión en las islas Decepción y Livingston y el entorno del mar de Bransfield. Para realizar estos trabajos es necesario definir el marco de referencia geodésico, para ello se han utilizaron las redes geodési...
El Instituto Panamericano de Geografía e Historia (ipgh) ha financiado el proyecto GEOF 04 2018, para la modernización del seguimiento de los niveles del lago Titicaca en la estación hidrométrica del puerto de Guaqui, Bolivia. El proyecto ha consistido en la instalación de una nueva regla limnimétrica, así como la
adquisición y colocación de un sen...
Resumen: La determinación del nivel de referencia vertical y la pendiente hidráulica en las hidrovías de la Amazonía peruana es un problema que afecta la seguridad de la navegacion y a los proyectos de ingeniería y de investigación. Actualmente en las hidrovías de la Amazonía peruana, no se cuenta con un nivel de referencia vertical relacionado al...
Cerro Blanco Volcanic Complex (CBVC) is one of the youngest caldera complexes in the Southern Central Andes. Subsidence registered at CBVC has shown a slowdown in deformation velocity since 1992 (2.6 cm/yr) to 2010 (0.87 cm/yr). We update the deformation state of this caldera system by processing DInSAR data between 2003 and 2020 and GPS as a compl...
Traditionally volcanic-hazard assessments have been applied to stratovolcanoes, where volcanic hazard maps represent important tools for volcanic crisis management and land-use planning. In recent years, several improvements have been made for monogenetic volcanic fields focused on, among other things, the development of spatial models to deal with...
Traditionally volcanic-hazard assessments have been applied to stratovolcanoes, where volcanic hazard mapsrepresent important tools for volcanic crisis management and land-use planning. In recent years, severalimprovements have been made for monogenetic volcanic fields focused on, among other things, the development ofspatial models to deal with on...
Deception Island (South Shetland Islands) is one of the most active volcanoes in Antarctica. In the 1988–1989 austral summer, after the most recent eruptive process on the island (1967–1970), monitoring of volcanic activity through geophysical and geodetic techniques was resumed by Spanish and Argentinean scientists. In order to monitor the island'...
The Hydrometric Network of the Bolivian Navy (RHAB) database lacks the ease of consultation required by a modern administrator for the optimization of the management of hydrological resources. Therefore, we presented a new methodology, generalizable to any country, to develop a multidisciplinary geographic information system (GIS) on the web. It is...
After the 2004 unrest on Tenerife (Canary Islands), the Global Navigation Satellite System (GNSS) network called TEGETEIDE was designed and deployed with seven survey mode stations to contribute to a volcanic alert system. Starting in 2008, public access data from continuous GNSS stations, managed by public institutions, were included in this netwo...
This paper demonstrates the usefulness of approaching the dynamic study of the precise positioning of a network of permanent global positioning system (GPS) stations through functional data analysis. The displacement data for each GPS station, obtained from observations of the global navigation satellite system, are a discrete sample of the positio...
Increased thermal activity was detected to coincide with the onset of volcano inflation in the seawater-filled caldera at Deception Island. This thermal activity was manifested in pulses of high water temperature that coincided with ocean tide cycles. The seawater temperature anomalies were detected by a thermometric sensor attached to the tide gau...
Resumen El Instituto Panamericano de Geografía e Historia (ipgh) ha financiado el proyecto GEOF 04 2018, para la modernización del seguimiento de los niveles del lago Titicaca en la estación hidrométrica del puerto de Guaqui, Bolivia. El proyecto ha consistido en la instalación de una nueva regla limnimétrica, así como la adquisición y colocación d...
The positioning systems combined with geographic information systems are fundamental tools for the georeferencing of cartography from diverse origins and periods of time that allows us to link thematic information of maps or images with the real position in the field.
With this paper we seek to define a methodology for the use of old cartography in...
Infrastructures need constant inspection and maintenance for monitoring of deterioration. Therefore, the vast number of consequences that would have a possible collapse. Non-destructive testing techniques are increasingly used in the inspection tasks. In this way, the inspection does not interfere with the structure and the infrastructure service i...
The positioning systems combined with geographic information systems are fundamental tools for the georeferencing of cartography from diverse origins and periods of time that allows us to link thematic information of maps or images with the real position in the field.
With this paper we seek to define a methodology for the use of old cartography in...
As it is well known, GNSS data analysis is a powerful tool to study geodynamic processes. However, observational methodologies and data analysis results should be adapted to determine local or even regional effects. It is particularly important in tectonic plate boundary areas when looking for subduction zone limits.
When using Continuous GNSS (CGN...
The Andalusian Positioning Network (RAP) is a regional GNSS permanent net-work in Southern Spain that offers a public service for precise positioning in real-time (RAP-IP). Most of the registered users are linked to the construction sector, so the collapse of the housing bubble and the Spanish economic crisis influenced the use of RAP services from...
The Andalusian Positioning Network (RAP) is a regional
GNSS permanent network in Southern Spain that offers a public service
for precise positioning in real-time (RAP-IP). Most of the registered users
are linked to the construction sector, so the collapse of the housing bubble
and the Spanish economic crisis influenced the use of RAP services from...
The Andalusian Positioning Network (RAP) is a regional GNSS permanent network in southern Spain that offers two public services for precise positioning: real-time (RAP-IP) and post processing (RAP-FTP). The most of registered users are linked to the construction sector, so the collapse of the housing bubble and the Spanish economic crisis influence...
En 2010, como consecuencia, de un proyecto de investigación (referencia del proyecto) que lidera el grupo de Volcanismo Activo del Consejo Superior de Investigaciones Científicas (CSIC) se establece una colaboración entre el CSIC, el INETER (Nicaragua) y el Laboratorio de Astronomía, Geodesia y Cartografía de la Universidad de Cádiz (LAGC). Entre l...
A detailed study is presented of the tidal constituents for Livingston and Deception Islands (Antarctica) obtained at the LIVMAR and DECMAR tide
gauge stations. Data were acquired with tide gauge pressure sensors, and calculated from a long time series of 798 days of data-logging, using the
least-squares harmonic estimation method. The results show...
In order to establish a better value of the mean sea level in the South Shetland, in 2007 the first gauges in Livingston and Deception islands was installed. LIVMAR and DECMAR tide gauge stations are located in Livingston and Deception Island, respectively. Due to the harsh conditions of the area, with sea ice for long periods of the year, pressure...
In recent years concerns have been growing in the scientific community over the definition of scientific responsibilities during emergencies, and the legal status of scientists involved in the corresponding decision-making. It is clear that the legal framework is one of the main elements affecting this issue; however, many factors may affect both t...
In order to establish an approximate value of the mean sea level in the South Shetland, in 2007 the first gauges in Livingston and Deception islands was installed. Due to the harsh conditions of the area, with sea ice for long periods of the year, pressure sensors were installed near the coast but deep enough to not be affected by ice.
Two tidal re...
The processing of measurement data from satellite constellations such as Global Navigation Satellite Systems (GNSS), including the well-known Global Positioning System (GPS), have been successfully applied to virtually all areas of geophysical sciences. In this work, a method is described where Geographical Information Systems (GIS) are employed to...
The 2011 volcanic unrest at El Hierro Island illustrated the need for a Volcanic Alert System (VAS) specifically designed for the management of volcanic crises developing after long repose periods. The VAS comprises the monitoring network, the software tools for analysis of the monitoring parameters, the Volcanic Activity Level (VAL) management, an...
In July 2011 at El Hierro (Canary Islands, Spain), a volcanic unrest was detected, with significant deformations followed by increased seismicity. A submarine eruption started on 10 October 2011 and ceased on 5 March 2012, after the volcanic tremor signals persistently weakened through February 2012. However, the seismic activity did not end when t...
Significant deformations, followed by increased seismicity detected since 2011 July at El Hierro, Canary Islands, Spain, prompted the deployment of additional monitoring equipment. The climax of this unrest was a submarine eruption first detected on 2011 October 10, and located at about 2 km SW of La Restinga, southernmost village of El Hierro Isla...
This paper describes the development of a multi-parameter system for monitoring volcanic activity. The system permits the remote access and the connection of several modules in a network. An embedded ARMTM processor has been used, allowing a great flexibility in hardware configuration. The use of a complete Linux solution (DebianTM) as Operating Sy...
A principios de 2013, durante la fase final del proceso eruptivo que tuvo lugar en la isla de El Hierro (2011-2013), se recibió el encargo por parte de la Dirección General de Seguridad y Emergencia del Gobierno de Canarias de elaborar los mapas de peligro volcánico de La Palma. Si bien en aquellos momentos no se habían registrado cambios relevante...
A methodology for near real-time surface deformation analysis was developed and applied at Deception Island. It relies on a minimum of three strategically deployed benchmarks’ position variations at sub-daily rates determined by GNSS-GPS (Global Navigation Satellite Systems - Global Positioning System) geodetic techniques. The benchmarks’ positions...
El Hierro Island in the Canary Archipelago recently experienced a submerged eruption a few kilometers off its southern shore, detected 2011 October 10 on the island’s south-rift alignment. The seismic activity suddenly increased around mid 2011 July, and ground deformation was then detected on the only geodetic benchmark that is continuously observ...
Deception Island is one of the most visited places in Antarctica. There are biological, geological, and archeological features that are major attractions within Port Foster, its horse shoe-shaped natural inner bay, and two scientific bases that are occupied during austral summers. Deception Island is an active volcano, however, and needs to be moni...
Subduction comes to an end when all oceanic lithosphere is consumed and continental or
transitional crust, with positive buoyancy, becomes involved. During continental collision, the
fi nal stage of subduction may be characterized by slab breakoff, limited continental subduction,
and delamination below the fold-and-thrust belt. We report receiver f...
This article describes a reconstruction made of the palaeo-volcanic edifice on Deception Island (South Shetland Islands, Antarctica) prior to the formation of its present caldera. Deception Island is an active Quaternary volcano located in the Bransfield Strait, between the South Shetland Islands and the Antarctic Peninsula. The morphology of the i...
When establishing the relative distance between two GNSS–GPS stations with sub-centimeter accuracy, it is necessary to have auxiliary data, some of which can only be collected some time after the moment of measurement.However, for monitoring highly-active geodynamic areas, such as volcanoes and landslides, data precision is not as essential as rapi...
Surface deformation parameters and its use in volcano monitoring have evolved from classical geodetic procedures up to those based on Global Navigation Satellite Systems (GNSS), in particular the most widely used and known Global Positioning System (GPS), profiting from the automated data processing, positioning precision and rates, as well as the...
During the nearly 40 years covered by the study, major height differences of over ± 25 m have been revealed in the volcanic landscape of the 1970 craters in Deception Island, an active volcano in the South Shetland Islands (West Antarctica). In the last 14 years, the mean volcanic filling rate has been 1 m yr-1 and the mean erosion rate has been -0...
The surface deformation has been an essential parameter for the onset
and evolution of the eruptive process of the island of El Hierro
(October 2011) as well as for forecasting changes in seismic and
volcanic activity during the crisis period. From GNSS-GPS observations
the reactivation is early detected by analizing the change in the
deformation o...
El Hierro Island (Canary Islands, Spain) has undergone a submarine
eruption a few kilometers to its southeast, detected October 10, on the
rift alignment that cuts across the island. However, the seismicity
level suddenly increased around July 17 and ground deformation was
detected by the only continuously observed GNSS-GPS (Global Navigation
Satel...
The FFM (Failure Forecast Method) is developed from the eruption of St.
Helens, being repeatedly applied to forecast eruptions and recently to
the prediction of seismic activity in active volcanic areas. The
underwater eruption of El Hierro Island has been monitored from three
months before starting (October 10, 2011). This allowed a large
catalogu...
From the July 19, 2011 an increase of seismicity, accompanied by a
remarkable process of deformation, was detected on the island of El
Hierro. This reactivation process, instrumental and scientifically
monitored, culminates in the occurrence of a submarine eruption, with
the emergence of a strong tremor signal, in the south of the island on
October...
Deception Island is an active volcano in the South Shetland Islands (Antarctic). Its eruptions have been recorded since 1842, the last episode occurring between 1967 and 1970. This study quantifies the geomorphological changes which have taken place as a result of historical volcanic activity on the island. The linear and volumetric results obtaine...
During the 2007–08 Spanish Antarctic campaign, two moorings of bottom pressure sensors were carried out over a ten week period. This paper presents the results of the tidal analysis from sea level records obtained at Deception and Livingston islands (South Shetland Islands, Antarctica). The main objective of this paper is to present a detailed stud...
A numerical, non-linear, barotropic, two-dimensional tidal model was implemented and used to simulate the M 2 , S 2 , O 1 and K 1 constituents in Port Foster (Deception Island, Antarctica). The model has been validated by comparing the simulation results against measured water levels data collected in several stations inside the domain. Once the mo...
Since 1986 our group has joined in campaigns to the Antarctic Peninsula and Shetland Islands. With the support of the Spanish Bases in Livinston Island and Deception Island, although the first campaigns had little frequency, in the last 12 years geodetic and geophysical observations have been made every austral summer. From those observations sever...
Establishment of a geodetic network in Tenerife is the starting point for the use of GPS and other precise geodetic techniques in the support of the study of kinematics and their relation with island volcanic activity. This paper is focused on the characterization of volcanotectonic activity of Tenerife, to determine the geodynamic framework for vo...
The goal of this paper is to study the velocity field and deformation parameters in Southern Spain and surrounding areas (Ibero-Maghrebian region) using GPS episodic measurements. Results are compared to those previously published as well as deformation parameters derived from seismic data. For this purpose, a geodetic GPS network of 12 stations wa...