Keywords: seafloor geodesy, volcano monitoring, Campi Flegrei caldera, Global Positioning System, time series, buoy. Despite the data being affected by environmental noise associated with sea and meteorological conditions, the horizontal GPS displacements on the buoys show a trend coherent with a radial deformation pattern. Campi Flegrei. A new method to assess long-term sea-bottom vertical displacement in shallow water using a bottom pressure sensor: application to Campi Flegrei, southern Italy. 29K likes. Monday to Friday from 08:30 to 16:30. The cGPS data has been processed in kinematic mode with the open source program package RTKLIB ver. Sea floor geodesy. SG, MD, and GD acquired cGPS data. (2014a). Layout of the buoys. This variability is particularly pronounced in the shallow layers of coastal areas, where additionally, the presence of rivers or waste waters introduce further variability in water properties. The weekly filtered GPS time series are shown in Figure 7. Measurement of seafloor deformation in the marine sector of the Campi Flegrei caldera (Italy). Book your tickets online for Campi Flegrei, Naples: See 86 reviews, articles, and 69 photos of Campi Flegrei, ranked No.126 on Tripadvisor among 855 attractions in Naples. J. Volcanol. Citation: De Martino P, Guardato S, Donnarumma GP, Dolce M, Trombetti T, Chierici F, Macedonio G, Beranzoli L and Iannaccone G (2020) Four Years of Continuous Seafloor Displacement Measurements in the Campi Flegrei Caldera. Black and orange arrows indicate observed (Table 3) and calculated displacements assuming a spherical source (Table 4), respectively. This paper does not necessarily represent DPC official opinion and Policies. Only 70% of the horizontal positions of the buoy are within 1 m of the origin, taken as the mean horizontal position in the considered period. From July 2017 to May 2020, the Campi Flegrei caldera has been characterized by larger vertical motion with a constant, quasi-linear trend over time (http://www.ov.ingv.it/ov/it/bollettini/275.html). Campi Flegrei (Phlegrean Fields) volcano . This software, based on the maximum likelihood estimation algorithm (MLE), estimates the linear trend in time series with temporally correlated noise. 86 Reviews #127 of 855 things to do in Naples. Europe ; Italy ; Campania ; Province of Naples ; Naples ; Things to Do in Naples ; Campi Flegrei; Search. Facebook. Modeling crustal deformation near activefaults and volcanic centers—a catalog of deformation models. 87 (4), 351–360. di . FIGURE 8. *Correspondence: Giovanni Iannaccone, giovanni.iannaccone@ingv.it, Front. 12, 147–153. There have been no new fumarole openings reported. GPS data are acquired with a sampling interval of 30 s and downloaded daily by the INGV-Monitoring Center in Naples for storage and processing. Over 85% of the horizontal positions of the buoy are within 30 cm of the origin, taken as the mean horizontal position in the considered period. One buoy is also equipped with a meteorological station (temperature, humidity, atmospheric pressure, wind direction and speed). Solid Earth 124 (11), 12116–12140. The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. Volcano monitoring using gps: developing data analysis strategies based on the June 2007 Kilauea volcano intrusion and eruption. J. Geophys. The location of the source is indicated by a red cross. The sill-like source has larger values of Np (number of source parameters) and χv2 (chi-squared per degrees of freedom) and the spheroid has a smaller value of χv2 than the spherical source but also has 3 additional geometrical parameters (Battaglia et al., 2013b). Application of a similar procedure is under study for the MEDUSA buoys which also are equipped with digital compass to measure pitch, roll and heading data. di. We used the dMODELS software package (Battaglia et al., 2013a; Battaglia et al., 2013b), which provides MATLAB functions and scripts to invert GPS data for the typical source shapes used in the volcanic environment (see eg: Gottsmann et al., 2006), such as spherical (McTigue, 1987), spheroidal (Yang et al., 1988) and sill (Fialko et al., 2001), embedded in a homogenous, isotropic, elastic half-space. Seismol Res. GI, PM, and GM wrote the manuscript with input from all of the co-authors. That's why studying how Campi Flegrei works is so vital. Acoustic methods use travel time measurements of acoustic wave packets between two reference locations together with estimation of the seawater sound speed. Here, for the MEDUSA data, we generate the weekly median time series of the cleaned kinematic solutions to which we applied an additional cleaning algorithm based on the interquartile range (IQR) statistic for outlier detection in the GPS position time series (Bock et al., 2000). Past hazard assessments in this region have focused on eruption hazards rather than on hazards from volcanic unrest. (A) North (top row), East (middle row) and Up (bottom row) components. The buoy CFSB is located at greater depth and is subject to larger horizontal fluctuations. (2018). Long-term seafloor experiment with the CUMAS module: performance, noise analysis of geophysical signals, and suggestions about the design of a permanent network. Geoth. Sections of this page. Video tratto da “guida all’Osservatorio Vesuviano” – Istituto Nazionale di Geofisica e Vulcanologia sezione di Napoli. Similarly, the variability of temperature and salinity over the time produces sea density changes detected as pressure variation by the BPR sensors. Continuous Global Positioning System (cGPS) data are available since April 2016 for the CFBA, CFBB and CFBC stations and since July 2016 for the CFSB station. doi:10.4401/ag-6431, Fialko, Y., Khazan, Y., and Simons, M. (2001). The editor and reviewers' affiliations are the latest provided on their Loop research profiles and may not reflect their situation at the time of review. 57 (2), S0213. Solid Earth 123, 66–83. 36,000 y.BP, Napoletanian Tuff eruption ca. This vertical correction is negligible for CFBA, CFBB and CFBC stations, due to the mechanical system adopted in the deployment of the three new buoys (Iannaccone et al., 2018). An outlier is defined as having a residual with respect to the weekly median greater than 2 times the IQR. The CFSB station is characterized by a very high noise level (Figure 6) and so is not been included in the horizontal component analysis. Given the success of the CUMAS experiment, three new buoys with GPS stations were deployed in early 2016 in the Gulf of Pozzuoli, forming the MEDUSA (Multiparametric Elastic-beacon Devices and Underwater Sensor Acquisition system) infrastructure. Hot Springs & Geysers, Volcanoes. Consegna entro il 31 gennaio 2021. dMODELS: a MATLAB software package for modelling crustal deformation near active faults and volcanic centers. We have shown that MEDUSA provides continuous GPS measurements in shallow water (less than 100 meter depth) with a comparable precision to the land GPS vertical displacement and competitive with other systems such those using seafloor pressure gauges or GPS-acoustic positioning. Campi Flegrei. Parco archeologico Campi Flegrei nuove ricognizioni al Portus Julius di Baia. 105 (B12), 28223–28253. MEDUSA has allowed extension into the Gulf of Pozzuoli of the Campi Flegrei geophysical monitoring system, which was exclusively land-based before 2016, improving the observation and assessment of seafloor deformation in the area and observation and location of earthquakes. 8:615178. doi: 10.3389/feart.2020.615178. Impact Factor 2.689 | CiteScore 3.3More on impact ›, Frontiers in Seafloor Geodesy Sorgenti d'acqua calda e geyser, Vulcani. The horizontal and vertical velocities, uncertainties, and noise properties were estimated from the weekly position time series of the 3 cGPS stations on the buoys (CFBA, CFBB and CFBC in Figure 7) and of the 21 cGPS stations deployed on land (De Martino et al., 2014b; Iannaccone et al., 2018), using the software package HECTOR (Bos et al., 2013). MEDUSA is fully integrated in the Campi Flegrei surveillance system: all the data acquired are transmitted to a unique, land acquisition center where they are analyzed and stored together with the data provided by the other land monitoring networks. Geophys. The latest report of the Vesuvius Volcano Observatory (INGV OV) shows that inflation of the Pozzuoli area continues at steady rates of up to 0,7 cm per month, totaling over 10 cm during the past 10 years for some places. Res. After a test period and four years of operation and improvement of the quality control and analysis procedures, the MEDUSA infrastructure now contributes continuous geodetic data to volcanological monitoring and studies of the marine sector of the Campi Flegrei caldera. Located in Naples, a 20-minute walk from San Paolo Stadium and 3.6 miles from Castel dell'Ovo, Campi Flegrei Studios provides air-conditioned accommodations with a balcony and free WiFi. Hot Springs & Geysers, Volcanoes. The volcanic field has been the site of some extremely violent eruptions in the past, although the few ones that occurred during historic times were small events. doi:10.1016/j.jvolgeores.2014.03.003, De Martino, P., Tammaro, U., and Obrizzo, F. (2014b). Power supply, data transmission and clock signals to the module equipment are provided through an armored, electro-mechanical cable, which also serves for module handling and installation/recovery. Ancora allerta meteo nei Campi Flegrei: da arancione a gialla per altre 24 ore. Campi Flegrei (Napoli, Italia) - Biglietti, foto e indirizzo. The uncertainties of the weekly positions (error bars) shown in Figure 7 represent the interquartile range (IQR) of each weekly median solution. doi:10.1029/jb092ib12p12931, Petersen, F., Kopp, H., Lange, D., Hannemann, K., and Urlaub, M. (2019). 22, 21. doi:10.1007/s10291-017-0686-6, Larson, K. M., Poland, M., and Miklius, A. J. Geophys. TABLE 3. cGPS station coordinates and component velocity and uncertainty from July 2017 to May 2020. We thank all the INGV-OV staff involved in the management and maintenance of the MEDUSA infrastructure and cGPS network. doi:10.1002/2016JB013459, De Martino, P., Guardato, S., Tammaro, U., Vassallo, M., and Iannaccone, G. (2014a). Note the different scale for the signal on the horizontal components (North and East) with respect to the vertical component (Up). CAMPI FLEGREI Bollettino Settimanale 14/04/2020 – 21/04/2020 (Aggiornamento al 21 aprile 2020 ore 12:00 locali) 1. The Campi Flegrei ("burning fields") or Phlegrean Fields is a large, 13-km-wide nested caldera located under the western outskirts of the citiy of Naples and under the Gulf of Pozzuoli. In this case, MEDUSA measurements would be essential for an early detection of an eventual magma rise in the marine sector of the caldera. The nearest airport is Naples International, 8.7 miles from Campi Flegrei Studios, and the property offers a paid airport shuttle service. J. Geophys. Campi Flegrei. The main limitation of the acoustic techniques arises from the variation over time of properties of the marine environment, with the consequent difficulty estimating the path length starting from the measurement of the propagation time. (2016). PM provided the cGPS data processing, time series analysis (with contribution from GD, FC, and TT) and data modelling. However, noise reduction through data position correction can be performed using heading, pitch and roll measurements produced by a digital compass on the top of each buoy. Noise in GPS coordinate time series. SINTESI STATO DI ATTIVITA’ Alla luce dei dati di monitoraggio si evidenzia: 1) SISMOLOGIA: Nell'ultima settimana nell’area dei Campi Flegrei sono stati registrati 21 terremoti (M dmax = … doi:10.1016/j.jog.2019.01.002, Williams, S. D. P. (2008). Lett. Rev. The statistics shows that a spherical source (McTigue, 1987) fits best the GPS deformation velocities. Elastic stress and deformation near a finite spherical magma body resolution of the point source paradox. doi:10.1002/2017JB014852, Iannaccone, G., Guardato, S., Vassallo, M., Elia, L., and Beranzoli, L. (2009). A buoy, named CUMAS (Cabled Underwater Multidisciplinary Acquisition System, Iannaccone et al., 2009; Iannaccone et al., 2010) was deployed in November 2006, at a sea depth of 97 m in the Gulf of Pozzuoli, the marine sector of the Campi Flegrei volcanic area, for an experiment of acoustic data transmission. This difference shows the influence of weather and sea conditions and marine water circulation on the horizontal components (Figures 3B–6B) which produces large fluctuations of the GPS signal, about 10% of which are above about 30 cm. Best of 2020 ; Road Trips ; Help Center ; Campi Flegrei, Naples: Address, Phone Number, Campi Flegrei Reviews: 4/5. 351 81 22 536 info @ tvcampiflegrei.it. Table 2 reports the correlation between the cGPS horizontal components of the couples of the buoys CFBA, CFBB and CFBC, in the period between 1 March 2018 and 31 May 2020. J. Volcanol. FIGURE 6. Consequently, we consider that under bad weather conditions the measurements of the position of the buoys is unreliable and we remove all data with fluctuations above ±30 cm in the North and East components. N. 126 di 857 Cose da fare a Napoli. A seismic swarm took place in the Campi Flegrei area near the Pisciarelli fumarole at the Solfatara crater in Italy, on Sunday night, April 26, 2020. This period, however, was characterized by small vertical movements. Nonostante i nostri continui richiami, per avere un territorio degno e vivibile fino ad oggi nulla è stato fatto da questa Amministrazione. Using a digital compass installed on the buoy, Xie et al. Earth Sci., 08 December 2020 Since April 2016, the GPS vertical displacements at the four buoys show a continuous uplift of the seafloor with cumulative measured uplift ranging between 8 and 20 cm. Campi Flegrei. 86 Reviews #126 of 855 things to do in Naples. We present 4 years of continuous seafloor deformation measurements carried out in the Campi Flegrei caldera (Southern Italy), one of the most hazardous and populated volcanic areas in the world. Nuovo rinvenimento nei Campi Flegrei (Luglio 2020), questa volta ad entusiasmare gli appassionati è stata la scoperta all'interno del Parco Archeologico delle Terme romane di Baia di un tratto dell'Acquedotto Augusteo. Figure 8 shows the vertical displacement observed at the RITE cGPS station located in the town of Pozzuoli, the area of maximum vertical deformation of the caldera, and at the four MEDUSA cGPS stations on the buoys. Fast error analysis of continuous GNSS observations with missing data. La TV Ufficiale dei Campi Flegrei. FIGURE 4. |, https://doi.org/10.3389/feart.2020.615178, http://www.ov.ingv.it/ov/it/bollettini/275.html. Front. doi:10.1029/jb093ib05p04249, Keywords: seafloor geodesy, volcano monitoring, Campi Flegrei caldera, Global Positioning System, time series, buoy, Citation: De Martino P, Guardato S, Donnarumma GP, Dolce M, Trombetti T, Chierici F, Macedonio G, Beranzoli L and Iannaccone G (2020) Four Years of Continuous Seafloor Displacement Measurements in the Campi Flegrei Caldera. doi:10.1007/s10291-007-0086-4, Xie, S., Law, J., Russell, R., Dixon, T. H., Lembke, C., Malservisi, R., et al. doi:10.1785/gssrl.81.6.916, Klos, A., Bos, M. S., and Bogusz, J. Geoth. They compared the expected vertical displacement in the marine sector to that predicted by a Mogi model computed using only horizontal and vertical, on-land, cGPS measurements in the period between April 2016 and July 2017. (A) North (top row), East (middle row) and Up (bottom row) components; (B) GPS kinematic positions shown in the horizontal plane; (C) Frequency histogram of the horizontal components. Front. Agosto 15, 2020 Agosto 15, 2020 di admin Arco Felice 15/08/20 rifiuti abbandonati e discariche a cielo aperto, «Amministrazione inesistente» Degrado ad Arco Felice, spiaggia Monachelle. Received: 08 October 2020; Accepted: 20 November 2020;Published: 08 December 2020. Premio Campi Flegrei 2020 concorso di fotografia + mostra. doi:10.1016/j.jvolgeores.2012.12.018, Bock, Y., Nikolaidis, R. M., de Jonge, P. J., and Bevis, M. (2000). The results for different volcanic sources obtained by cGPS data inversion are listed in Table 4. Campi Flegrei Studios offers a terrace. 2.4.2 (http://www.rtklib.com) to obtain positions of the buoys every 30 s. The reference station for cGPS data processing is LICO (Figure 1), located at a distance of about 10 km from the caldera center (a full description of the kinematic cGPS processing is reported in De Martino et al., 2014a). Summer Camps 2020 From 22 June to 31 July the Summer Camps of the Sub Campi Flegrei Center in collaboration with Legambiente Città Flegrea at the Lido Montenuovo for children aged 6 to 12 years. 93 (B5), 4249–4257. Geoth. Each buoy is connected by a power supply and data transmission cable to a seafloor module equipped with geophysical and oceanographic sensors placed a few meters from the buoy ballast (Figure 2A). Summer Camps 2020 From 22 June to 31 July the Summer Camps of the Sub Campi Flegrei Center in collaboration with Legambiente Città Flegrea at the Lido Montenuovo for children aged 6 to 12 years. Available at: pubs.usgs.gov/tm/tm13b1/, Battaglia, M., Cervelli, P. F., and Murray, J. R. (2013b). 124, 14–24. To achieve the centimeter accuracy in the Up component need for seafloor deformation monitoring, BPR time series must be integrated with other complementary measurements such as sea level observations at local tide gauges, atmospheric pressure measurements and measures related to seawater column density (i.e. SINTESI STATO DI ATTIVITA’ Alla luce dei dati di monitoraggio si evidenzia: 1) SISMOLOGIA: Nell'ultima settimana nell’area dei Campi Flegrei sono stati registrati 29 terremoti (M dmax = … Facebook; Twitter; Pinterest ; Email; Italien – Ein vulkanischer Erdbebenschwarm hat die Bewohner im westlichen Großraum Neapel vergangene Nacht aus dem Schlaf gerissen. Annu. The position of the best fit source to the cGPS data from July 2017 to May 2020 (red cross in Figure 9) is very similar to source position inferred by Iannaccone et al., 2018 in the time span April 2016 to July 2017. J. Int. FIGURE 2. The seafloor sector of the caldera has been monitored since early 2016 by the MEDUSA marine research infrastructure, consisting of four instrumented buoys installed where sea depth is less than 100 m. Each MEDUSA buoy is equipped with a cabled, seafloor module with geophysical and oceanographic sensors and a subaerial GPS station providing seafloor deformation and other environmental measures. Cats: gps coordinate time series analysis software. Res. Real-time data transmission to a land acquisition center is provided by 5 GHz Wi-Fi. Next, we jointly inverted the horizontal and vertical deformation velocities measured at all the 24 cGPS stations (Figure 1) since July 2017 to investigate the caldera deformation. GPS kinematic time series (30 sec sampling) of the CFBA station. J. Geodyn. April 2020 Jens Skapski. A Campi Flegrei vagy Flegrei-mezők egy kalderákból, azaz kiszélesedett kráterekből álló vulkáni terület Dél-Olaszországban, Nápolytól és a Vezúvtól északnyugatra, a Pozzuoli-öböl körül és a Flegrei-félszigeten.Különféle vulkáni kúpok (összesen 27), kráterek és kalderák sűrű csoportosulása. Geodetic measurements on the seafloor are more frequently performed at large depths, typically greater than 1,000 m, than in shallow water. FIGURE 3. However, BPR measurement suffers from greater uncertainties than GPS. 86 recensioni. 254, 1–4. (A) North (top row), East (middle row) and Up (bottom row) components; (B) GPS kinematic positions shown in the horizontal plane; (C) Frequency histogram of the horizontal components. GPS kinematic time series (30 s sampling) of the CFBB station. This swarm began at 03:51 on 26/04/2020 and was made up of 34 earthquakes with magnitudes ranging from 0.0 to 3.1 and hypocentral depth between 1-2 km. Despite the high noise level of the horizontal GPS components of MEDUSA, our results showing coherence with the corresponding onshore data indicate that useful signal can be obtained. Geophys. GPS time series at Campi Flegrei caldera (2000–2013). (A) Horizontal and (B) vertical cGPS velocity fields at Campi Flegrei caldera from July 2017 to May 2020. Campi Flegrei, Pozzuoli. The vertical deformation decreases radially from the center and vanishes on the caldera’s border, about 6 km away. J. Geophys. Each buoy is equipped with a Leica GR10 GPS receiver and AR20 antenna. Each module includes: a three-component broadband seismic sensor, two low-frequency omnidirectional hydrophones, a three-component MEMS accelerometer and an absolute pressure recorder. Sarà una enorme occasione per conoscere meglio il pianeta, i cambiamenti epocali e le sfide globali a cui siamo chiamati. Today, there is no sign of imminent reawakening of activity, although there are abundant signs of the presence of a still active magma chamber in the forms of solfataras, warm springs, gas emissions etc. Campi Flegrei, la tv regionale della gente e dei territori Digitale terrestre: 555hd e 877hd Streaming e on demand: www.tvcampiflegrei.it Another common technique in marine geodesy that is suitable for monitoring vertical ground displacement is based on the variation of hydrostatic pressure at the sea bottom measured by a bottom pressure recorder (BPR). The deformation field observed in the Campi Flegrei area is generally axi-symmetric with the maximum of vertical displacement measured at the RITE GPS station (Figure 1), at the center of the caldera (De Martino et al., 2014b). Oggetto del bando: L’Associazione Flegrea PHOTO, in collaborazione con il Parco Archeologico Campi Flegrei, bandisce il "Premio Campi Flegrei 2020”, VI edizione del concorso fotografico nazionale, con mostra finale, finalizzato alla diffusione della conoscenza dei Campi Flegrei, alla promozione delle sue bellezze paesaggistiche, naturalistiche ed archeologiche. Three geological phases or periods are recognised and distinguished. Weekly UP time series recorded by MEDUSA cGPS stations on the buoys compared to data observed in the maximum deformation area at the RITE cGPS station. Campi Flegrei. Diving Center - Centro Sub Campi Flegrei. Two main acoustic techniques have been developed: 1) a GPS-Acoustic combination technique (GPS/A) where a kinematic GPS on a platform at the sea surface is combined with acoustic wave ranging to determine the position of a network of transponder on the seafloor (Bürgman and Chadwell, 2014) This technique has been used extensively to investigate crustal deformation at oceanic spreading centers and subduction thrust faults; usually the measurements are performed in campaign-style with research vessels or light inexpensive floating GPS stations using a glider. doi:10.1007/s00190-012-0605-0, Bürgmann, R.,, and Chadwell, D. (2014). Jump to. Articles, United States Geological Survey (USGS), United States, California Volcano Observatory, United States Geological Survey, United States. J. Geophys. Best of 2020 ; Help Centre ; Campi Flegrei, Naples: Address, Phone Number, Campi Flegrei Reviews: 4/5. View all CAMPI FLEGREI Bollettino Settimanale 17/03/2020 – 24/03/2020 (Aggiornamento al 24 marzo 2020 ore 12:00 locali) 1. Moreover, Figures 3–6, shows that the amplitudes of the GPS horizontal displacements for the three newer buoys (CFBA, CFBB and CFBC stations) are about one third of those of the older CUMAS buoy (CFSB station). Res. Moreover, an erratic instrumental drift of BPRs must be taken into account (Chierici et al., 2016). L'Associazione Flegrea PHOTO, con la collaborazione del Parco Archeologico Campi Flegrei e il patrocinio dei Comuni di Pozzuoli, Bacoli e Monte di Procida, ha lanciato la VI edizione del concorso fotografico nazionale "Premio Campi Flegrei 2020". Solid Earth 115 (B7), B07406. The property, housed in a building dating from 1970, is 4.3 miles from Galleria Borbonica and … Figure 9 shows the observed and calculated horizontal and vertical cGPS velocity field for the spherical source.