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Record W2242445149

Insar Applications in Environmental Sciences

2015· article· en· W2242445149 on OpenAlex
Diana Gheorghe, Iuliana Armaș

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueGeopolitics History and International Relations · 2015
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicMarine and environmental studies
Canadian institutionsnot available
Fundersnot available
KeywordsRemote sensingRadarInterferometric synthetic aperture radarExtraterrestrial lifeSynthetic aperture radarRadar imagingVenusSpace-based radarSatelliteSpacecraftGeologyComputer scienceRadar engineering detailsTelecommunicationsAerospace engineeringEngineeringPhysicsAstrobiology
DOInot available

Abstract

fetched live from OpenAlex

1. IntroductionSince 1978 a new type of remote sensing has been developed - radar remote sensing, but it was not until 1990 when the applications for this type of remote sensing started to be tested. The present paper tries to present the applications for Interferometric Synthetic Aperture Radar (InSAR) by expounding some cogent papers and their results. Even though there is plenty literature for the methodological approach (Adam et al., 2009, Blanco-Sanchez et al., 2008, Poneos and Dana, 2008, Scheuchl et al., 2009, Simonetto and Follin, 2012, Wegmuller et al., 2010, Zhu et al., 2009, Zhu and Bamler, 2010) in this paper we will focus only on the practical approach for this technique.SAR (Synthetic Aperture Radar) technology involves the existence of a certain type of radar, capable of sending and receiving a long wave signal, based on the move registered by the radar between the antenna mounted on a spacecraft or aircraft, and the object. This type of radar can provide remote images with high resolution. The applications of this technology go beyond the atmosphere into the extraterrestrial environment. An example of extraterrestrial application is the Magellan mission (Campbell, 1995) that studied Venus. The satellite was launched in June 1989 and its mission was to map Venus's surface. The mission lasted for three years and the satellite mapped 98% of the surface with a spatial resolution of the images of about 100 m.The principle behind this technology is to cast a radar signal towards an object, which is reflected and reaches back to the antenna. Depending on the time and the properties of the reflected beam, the signal is used to generate images. A major advantage of radar images, compared to optic ones, is that they can be acquired during the night and also they have a high spatial resolution of about 1 m.SAR images started to be acquired in 1978, when the first SAR satellite (SEASAT) was launched but became popular only after the 1990s as technology improved.After the 1990s many radar satellites were launched: ERS-1 (launched in 1991 by ESA), ERS-2 (launched in 1995), JERS-1 (1992, Japan), RADARSAT (1995, Canada), ALOS PALSAR (2005, Japan). Two of the newest radar satellites are TerraSAR-X (2007) and TanDEM-X (2010), both launched by DLR (German Spatial Agency). TanDEM's mission is to second TerraSAR and to map the entire terrestrial surface to obtain a global digital elevation model with a 1 m resolution.Closely related with the SAR technology, InSAR (Interferometric Synthetic Aperture Radar) uses at least two SAR images (the product obtained is called interferogram) to track the temporal changes of different objects of interest, to map the vertical movements or the texture changes from certain areas or to obtain a very high resolution DEM.The InSAR technique is used frequently in earth sciences because it can measure the finest vertical movements, thus it is being used in many domains, especially in monitoring natural hazards. Also, InSAR reveal better results in urban areas because of scatter elements, so this paper focuses mostly on InSAR applications in urban areas.2. Application of InSARThe applications for this technology ranges from geology - tectonics and neotectonics, earthquakes, volcanology (Perlock et al., 2009) to geomorphology - elevations and subsidence, sometimes under 1 mm, caused by groundwater over exploitation or by old mines, to glaciology (Bamber et al., 1999, Rott et al., 2007) and to land use - forest monitoring and land use changes (Amarsaikhan et al., 2007, Del Frate et al., 2008), but also in urban applications (Dell'Acqua et al., 2011, Dell'Acqua and Gamba, 2003), building extraction and measuring (Bennett and Blacknell, 2003, Dong et al., 2011), and change detection (Schmitt et al., 2011, Thonfeld and Menz, 2011).This technique is successfully applied in risk studies, from prevention to mitigation. In these cases InSAR is useful for monitoring the elements at risk, early response and rapid assessment of damages (Brunner et al. …

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.484
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.033
GPT teacher head0.214
Teacher spread0.181 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it