120 resources related to Volcanic activity
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- Most published Xplore authors for Volcanic activity
The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.
All fields of satellite, airborne and ground remote sensing.
OCEANS 2020 - SINGAPORE
An OCEANS conference is a major forum for scientists, engineers, and end-users throughout the world to present and discuss the latest research results, ideas, developments, and applications in all areas of oceanic science and engineering. Each conference has a specific theme chosen by the conference technical program committee. All papers presented at the conference are subsequently archived in the IEEE Xplore online database. The OCEANS conference comprises a scientific program with oral and poster presentations, and a state of the art exhibition in the field of ocean engineering and marine technology. In addition, each conference can have tutorials, workshops, panel discussions, technical tours, awards ceremonies, receptions, and other professional and social activities.
To promote awareness, understanding, advancement and application of ocean engineering and marine technology. This includes all aspects of science, engineering, and technology that address research, development, and operations pertaining to all bodies of water. This includes the creation of new capabilities and technologies from concept design through prototypes, testing, and operational systems to sense, explore, understand, develop, use, and responsibly manage natural resources.
The conference is the primary forum for cross-industry and multidisciplinary research in automation. Its goal is to provide a broad coverage and dissemination of foundational research in automation among researchers, academics, and practitioners.
It is expected that GRS Letters will apply to a wide range of remote sensing activities looking to publish shorter, high-impact papers. Topics covered will remain within the IEEE Geoscience and Remote Sensing Societys field of interest: the theory, concepts, and techniques of science and engineering as they apply to the sensing of the earth, oceans, atmosphere, and space; and ...
Theory, concepts, and techniques of science and engineering as applied to sensing the earth, oceans, atmosphere, and space; and the processing, interpretation, and dissemination of this information.
Applications-oriented material in the field of instrumentation and measurement.
Measurements and instrumentation utilizing electrical and electronic techniques.
Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The Transactions publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.
2011 Eighth International Conference on Fuzzy Systems and Knowledge Discovery (FSKD), 2011
The main idea of rough set theory is to extract decision rules by attribute reduction and value reduction in the premises of keeping the ability of classification. In this paper, an algorithm on value reduction and for extracting decision rule based on the membership function is proposed. All the decision rules on decision table and the minimal rule set of ...
IEEE Transactions on Magnetics, 2001
In order to examine the relationship between volcanic explosions and electromagnetic phenomena, we constructed the continuous extremely low frequency (ELF) band measuring system, which is composed of geoelectric potential differences (GPDs) and geomagnetic fields (GF's) at the foot of Mt. Sakurajima, Kyushu Island, Japan. The results of the measurements show that the measuring system is able to measure the natural ...
2008 Second Workshop on Use of Remote Sensing Techniques for Monitoring Volcanoes and Seismogenic Areas, 2008
Due to its high eruptive activity, Piton de La Fournaise is an ideal case study to follow ground deformation associated with eruptive activity. Ground deformation is monitored in the field by the Volcanological Observatory of Piton de La Fournaise. GPS data reveal the presence of two time scales of ground deformation: (1) large short-term displacements (up to 20×10<sup>3</sup> mm d<sup>-1</sup> ...
International Geoscience and Remote Sensing Symposium, 'Remote Sensing: Moving Toward the 21st Century'., 1988
2008 Second Workshop on Use of Remote Sensing Techniques for Monitoring Volcanoes and Seismogenic Areas, 2008
Atmospheric sulfur dioxide is an important indicator of volcanic activity. Space based atmospheric sensors like GOME-2 on MetOp and OMI on EOS-Aura make it possible to detect the emissions of volcanic SO2 and monitor volcanic activity and eruptions on a global scale. With GOME-2, it is possible to detect and track volcanic eruption plumes and SO2 from passive degassing in ...
Local Activity, Memristor, and 137 - Leon Chua: 2016 International Conference on Rebooting Computing
NeuroGrid: Recording action potentials and large-scale network activity from the surface of the brain - IEEE Brain Workshop
Day 2 Welcome - Promise Activity: Making a Difference - WIE ILC 2018
Q&A with Dr. Jennifer Gelinas: IEEE Brain Podcast, Episode 8
Wind Power: The Technology
IEEE Collabratec: How to Manage Your Settings
Computing Beyond Moore's Law - William Vanderlinde: 2016 International Conference on Rebooting Computing
Disaster Meets Engineering: TechNews on IEEE.tv
Q&A with Chris Berka: IEEE Brain Podcast, Episode 9
Why is NETWORKING better with IEEE Collabratec?
IROS TV 2019- Robot vs. Robot- Autonomous Drone Racing
Roozbeh Ghaffari of MC10 accepts the IEEE Spectrum Emerging Technology Award - Honors Ceremony 2016
Q&A Government Agencies Panel: 2016 International Conference on Rebooting Computing
Educational Programs in QIS at UT Austin - Brian La Cour - ICRC San Mateo, 2019
Generation of Models for Wireless Sensor Network Assessment
264-µW IR-UWV Transmitter - Renzhi Liu - RFIC Showcase 2018
Power Electronics University Research: APEC 2019
Sean Sliger of Neuropace accepts the IEEE Spectrum Technology in the Service of Society Award - Honors Ceremony 2016
IEEE @ SXSW 2015 - DIY Brain Hacking: Electroceuticals & You
The main idea of rough set theory is to extract decision rules by attribute reduction and value reduction in the premises of keeping the ability of classification. In this paper, an algorithm on value reduction and for extracting decision rule based on the membership function is proposed. All the decision rules on decision table and the minimal rule set of reduced conditional attribute set without core-valued table would be attained by this algorithm.
In order to examine the relationship between volcanic explosions and electromagnetic phenomena, we constructed the continuous extremely low frequency (ELF) band measuring system, which is composed of geoelectric potential differences (GPDs) and geomagnetic fields (GF's) at the foot of Mt. Sakurajima, Kyushu Island, Japan. The results of the measurements show that the measuring system is able to measure the natural phenomena properly and the GPDs in the horizontal direction are observed which are assumed to be associated with the volcanic activity of Mt. Sakurajima when the seismometer was active.
Due to its high eruptive activity, Piton de La Fournaise is an ideal case study to follow ground deformation associated with eruptive activity. Ground deformation is monitored in the field by the Volcanological Observatory of Piton de La Fournaise. GPS data reveal the presence of two time scales of ground deformation: (1) large short-term displacements (up to 20×10<sup>3</sup> mm d<sup>-1</sup> ) monitored a few min to hours prior each eruption (2) and since 2000, small long-term ground displacements recorded during pre-eruptive unrests (0.4-0.7 mm d<sup>-1</sup> of summit inflation) and after major distal eruptions (0.3-1.3 mm d<sup>-1</sup> of summit deflation). The large GPS dataset available to follow the eruptive cycles is particularly useful to validate the remote sensing data as shown by the Globvolcano project. The good correlation between GPS and PSInSAR data recorded during pre-eruptive unrest periods allowed us to validate the ground deformation mapping using PSInSAR data at Piton de La Fournaise. The combination of PSInSar and GPS data, in the future, will give us complementary data to investigate the ground deformation associated with eruptive cycles on a larger space scale and thus better constrain the deformation sources.
Atmospheric sulfur dioxide is an important indicator of volcanic activity. Space based atmospheric sensors like GOME-2 on MetOp and OMI on EOS-Aura make it possible to detect the emissions of volcanic SO2 and monitor volcanic activity and eruptions on a global scale. With GOME-2, it is possible to detect and track volcanic eruption plumes and SO2 from passive degassing in near-real time (NRT). This is particularly important for early warning services, as increases in SO2 fluxes are an indicator for new episodes of volcanic unrest. The SO2 daily measurements from space are used for several early warning services related volcanic risk (Exupery, GlobVolcano) and for aviation warning purposes (GSE-PROMOTE).
We have investigated the deformation affecting the Campi Flegrei caldera (Italy), from 2002 to the end of 2006, by analyzing ENVISAT ASAR IS-2 data. This study has been performed by exploiting the SBAS-DInSAR algorithm that allows us to detect earth surface displacements and to investigate their temporal evolution via the generation of deformation time series. The presented analysis highlighted the renewed volcanic activity that started on mid-2005; moreover, we have combined the ascending and descending data in order to separate the vertical and east-west components of the detected displacements. The obtained results have been confirmed by the leveling data collected by the Osservatorio Vesuviano.
A Ground Based SAR Interferometer (GB-InSAR) was installed at Stromboli volcano (Italy) in February 2003 to continuously monitor the behaviour of the morphological depression known as Sciara del Fuoco, SdF, with alerting purposes. This was decided as a consequence of the collapse of a large landslide from the NW slope of the SdF and the subsequent tsunami occurred on December 2002. The GB-In SAR system, working at Ku band, was set up on the stable right flank of the SdF; it has been continuously working and during this last five years has permitted to follow the temporal and spatial evolution of the mass movement in the SdF and the crater. Interferometric maps have permitted to assess the deformation field over a large portion of the target area and to characterize different processes. The system allowed to observe in particular two main events occurred on 5 April 2003 (a major explosion) and on 27 February 2007 (beginning of the effusive phase) respectively. The potential of the use of DInSAR from satellite platforms working at C band to understand the dynamic of the whole volcano has been also investigated. Different images acquired from the ERS2, RADARSAT and ENVISAT satellites before and after the 2003 collapse of the landslide, and before and after the 2007 event, have been interferometrically processed as well. Notwithstanding the restricted number of available images, the ground deformation occurred on the island due to the volcanic activity has been obtained with spatial and temporal characteristics complementary to those ones provided by GB-InSAR.
In recent years, great effort has been dedicated to understanding the phenomena connected with volcanic activities. In particular, the behavior of flowing lava during a big eruption is of great interest in managing emergency activities. The very first parameters to be taken into account in studying the path of the lava flow are those defining the crust properties, which are highly dependent on the cooling process. In this paper, the improvement of a multisensorial measurement system already presented by the authors is proposed, which allows the estimation of the emittance value at higher resolution than the previous architecture. This feature permits the study of the heat transfer process in the boundary regions of the lava flow during crust formation. This is an important task for experts in order to predict the behavior of the lava flow, with emittance strictly correlated to the heat transfer process and, hence, to the crust formation.
Stratospheric aerosols significantly influence both the Earth's climate and the chemical composition of the stratosphere. Volcanic aerosols injected into the stratosphere, due to large volcanic eruptions, further enhance the effect on the climate and possibly lead to ozone depletion in the middle latitude stratosphere. The authors studies focus primarily on the change in the distribution of stratospheric aerosols before and after volcanic activity. The particle backscatter and other properties of stratospheric aerosols are studied to describe their variations. The Penn State Rayleigh/Raman lidar utilizes a Nd:YAG laser transmitting at both the doubled (532 nm) and tripled (355 nm) frequencies. The detector is equipped with separate channels to measure the low and high altitude signals from both the 532 nm and 355 nm as well as the Raman shifted returns due to N/sub 2/ and H/sub 2/O (660 nm and 607 nm). The LAMP lidar was first deployed on board the RV Polarstem during the LADIMAS campaign and has since been in operation in the United States. Scattering due to stratospheric aerosols from volcanic activity has been studied across different latitudes and over time. The effects due to Mt. Pinatubo (Philippines) and Mt. Hudson (Chile) eruptions have been compared.<<ETX>>
In this paper we show the results of an airborne differential SAR interferometry (DInSAR) experiment carried out over the Perugia area, center of Italy, by using the X-Band OrbiSAR system. Measurements on corner reflectors allowed us evaluating the system detection capability.
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