scholarly journals A study on the Abruzzo 6 April 2009 earthquake by applying the RST approach to 15 years of AVHRR TIR observations

2010 ◽  
Vol 10 (2) ◽  
pp. 395-406 ◽  
Author(s):  
M. Lisi ◽  
C. Filizzola ◽  
N. Genzano ◽  
C. S. L. Grimaldi ◽  
T. Lacava ◽  
...  
Keyword(s):  
High Resolution ◽  
Active Regions ◽  
Thermal Infrared ◽  
Earthquake Occurrence ◽  
Adaptive Approach ◽  
Infrared Observations ◽  
Thermal Anomalies ◽  
Preliminary Results ◽  
The One ◽  
Very High

Abstract. A self adaptive approach (RST, Robust Satellite Technique) has been proposed as a suitable tool for satellite TIR surveys in seismically active regions devoted to detect and monitor thermal anomalies possibly related to earthquake occurrence. In this work, RST approach has been applied to 15 years of AVHRR (Advanced Very High Resolution Radiometer) thermal infrared observations in order to study the 6 April 2009 Abruzzo earthquake. Preliminary results show clear differences in TIR anomalies occurrence during the periods used for validation (15 March–15 April 2009) and the one (15 March–15 April 2008) without earthquakes with ML≥4.5, used for confutation purposes. Quite clear TIR anomalies appears also to mark main tectonic lineaments during the preparatory phases of others, low magnitude(3.9

Prediction of water temperature heterogeneity of braided rivers using very high resolution thermal infrared (TIR) images

2013 ◽  
Vol 34 (13) ◽  
pp. 4812-4831 ◽  
Author(s):  
Vincent Wawrzyniak ◽  
Hervé Piégay ◽  
Pascal Allemand ◽  
Lise Vaudor ◽  
Philippe Grandjean
Keyword(s):  
High Resolution ◽  
Water Temperature ◽  
Thermal Infrared ◽  
Braided Rivers ◽  
Very High

scholarly journals A TIE POINT MATCHING STRATEGY FOR VERY HIGH RESOLUTION SAR-OPTICAL STEREOGRAMMETY OVER URBAN AREAS

2017 ◽  
Vol XLII-1/W1 ◽  
pp. 411-417 ◽  
Author(s):  
C. P. Qiu ◽  
M. Schmitt ◽  
X. X. Zhu
Keyword(s):  
High Resolution ◽  
Urban Areas ◽  
Complex Terrain ◽  
Point Matching ◽  
High Resolution Data ◽  
Urban Scenes ◽  
Fully Automatic ◽  
Matching Strategy ◽  
The One ◽  
Very High

This paper presents a matching strategy for sparsely distributed tie points, which can be used to carry out SAR-optical stereogrammetry. Since matching homologue points in heterogeneous multi-sensor image of complex terrain remains a challenging task, the proposed procedure combines the tie point matching step with the estimation of the corresponding 3D object coordinates. The results of this study are two-fold: On the one hand, they show that fully automatic SAR-optical stereogrammetry using very high resolution data of urban scenes is generally feasible and can provide 3D accuracies in the meter-domain. On the other hand, they highlight the difficulty of multi-sensor image matching, as well as the importance of robust matching strategies.

High Resolution Scanning Microscopy—What Next?

1975 ◽  
Vol 33 ◽  
pp. 18-19
Author(s):  
A. V. Crewe
Keyword(s):  
High Resolution ◽  
Phase Contrast ◽  
Scanning Microscopy ◽  
Resolving Power ◽  
Current Status ◽  
Scanning Microscope ◽  
Conventional Microscope ◽  
The One ◽  
Very High

The current status of high resolution scanning microscopy is probably well enough known that it needs little elaboration. Perhaps it is sufficient to say that resolving power can be achieved which is equal to that of the conventional microscope, that contrast is very high, and that a variety of forms of contrast are available which make use of both elastic and inelastically scattered electrons. The one weakness of the scanning microscope of which we are aware is that it is not as efficient as the conventional microscope for phase contrast or obtaining diffraction information.

scholarly journals RST analysis of MSG-SEVIRI TIR radiances at the time of the Abruzzo 6 April 2009 earthquake

2009 ◽  
Vol 9 (6) ◽  
pp. 2073-2084 ◽  
Author(s):  
N. Genzano ◽  
C. Aliano ◽  
R. Corrado ◽  
C. Filizzola ◽  
M. Lisi ◽  
...  
Keyword(s):  
Thermal Infrared ◽  
Space Time ◽  
Abstract Space ◽  
Earthquake Occurrence ◽  
Natural Factor ◽  
Infrared Observations ◽  
Cloud Coverage ◽  
Infrared Imager ◽  
Anomalous Signal ◽  
First Time

Abstract. Space-time fluctuations of Earth's emitted Thermal Infrared (TIR) radiation have been observed from satellite months to weeks before earthquakes occurrence. The general RST approach has been proposed in order to discriminate normal (i.e. related to the change of natural factor and/or observation conditions) TIR signal fluctuations from anomalous signal transient possibly associated to earthquake occurrence. In this work RST approach is applied to the Abruzzo 6 April 2009 event (ML=5.8) by using for the first time MSG-SEVIRI (Meteosat Second Generation -Spinning Enhanced Visible and Infrared Imager) thermal infrared observations. A validation/confutation analysis has been performed in order to verify the presence/absence of anomalous space-time TIR transients in the presence/absence of significant seismic activity. March–April 2009 has been analyzed for validation purposes. Relatively unperturbed periods (no earthquakes with ML≥5) have been taken for confutation. A specific TIR anomalies space-time persistence analysis as well as a cloud coverage distribution test have been introduced in order to eliminate artifacts and outliers both in the validation and confutation phases. Preliminary results show clear differences in TIR anomalies occurrence during the periods used for validation and confutation purposes. Quite clear TIR anomalies appear also to mark main tectonic lines related to the preparatory phases of others, low magnitude (ML~4) earthquakes, occurred in the area.

scholarly journals Using RST approach and EOS-MODIS radiances for monitoring seismically active regions: a study on the 6 April 2009 Abruzzo earthquake

2010 ◽  
Vol 10 (2) ◽  
pp. 239-249 ◽  
Author(s):  
N. Pergola ◽  
C. Aliano ◽  
I. Coviello ◽  
C. Filizzola ◽  
N. Genzano ◽  
...  
Keyword(s):  
Active Regions ◽  
Environmental Risks ◽  
Infrared Observations ◽  
Thermal Anomalies ◽  
Earth Observing System ◽  
Moderate Resolution ◽  
Resolution Imaging ◽  
Moderate Resolution Imaging Spectroradiometer ◽  
Eos Modis ◽  
First Time

Abstract. In the last few years, Robust Satellite data analysis Techniques (RST) have been proposed and successfully applied for monitoring major natural and environmental risks. Among the various fields of application, RST analysis has been used as a suitable tool for satellite TIR surveys in seismically active regions, devoted to detect and monitor thermal anomalies possibly related to earthquake occurrence. In this work, RST has been applied, for the first time, to thermal infrared observations collected by MODIS (Moderate Resolution Imaging Spectroradiometer) – the sensor onboard EOS (Earth Observing System) satellites – in the case of Abruzzo (Italy) earthquake occurred on 6 April 2009 (ML~5.8). First achievements, shown in this work, seem to confirm the sensitivity of the proposed approach in detecting perturbations of the Earth�s emission thermal field few days before the event. The reliability of such results, based on the analysis of 10 years of MODIS observations, seems to be supported by the results achieved analyzing the same area in similar observation conditions but in seismically unperturbed periods (no earthquakes with ML≥5) that will be also presented.

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