Search results for "LiDAR"
showing 10 items of 475 documents
Using LIDAR topography data for determination of morphology and terrace levels of the River Ogre Valley in Middle Latvia Lowland [abstract].
2016
Volcanic CO_2 detection with a DFM/OPA-based lidar
2015
The DFM/OPA-based lidar BILLI was used to investigate the volcanic plume released by the hydrothermal vent of Pisciarelli, in the Campi Flegrei volcano. BILLI remotely measured CO2 concentrations in cross-sections of the nearvent plume using the differential absorption technique. To our knowledge, this is the first example of lidar-based measurement of volcanic CO2 . The spatial resolution was 1.5 m and the temporal resolution 20 s. © 2015 Optical Society of America.
Fast tracking of wind speed with a differential absorption LiDAR system: First results of an experimental campaign at Stromboli volcano
2017
Carbon dioxide ( CO 2 ) is considered a precursor gas of volcanic eruptions by volcanologists. Monitoring the anomalous release of this parameter, we can retrieve useful information for the mitigation of volcanic hazards, such as for air traffic security. From a dataset collected during the Stromboli volcano field campaign, an assessment of the wind speed, in both horizontal and vertical paths, performing a fast tracking of this parameter was retrieved. This was determined with a newly designed shot-per-shot differential absorption LiDAR system operated in the near-infrared spectral region due to the simultaneous reconstruction of CO 2 concentrations and wind speeds, using the same sample o…
February 2017 extreme Saharan dust outbreak in the Iberian Peninsula: from lidar-derived optical properties to evaluation of forecast models
2018
Abstract. An unprecedented extreme Saharan dust event was registered in winter time from 20 to 23 February 2017 over the Iberian Peninsula (IP). We report on aerosol optical properties observed under this extreme dust outbreak through remote sensing (active and passive) techniques. For that, EARLINET (European Aerosol Research LIdar NETwork) lidar and AERONET (AErosol RObotic NETwork) Sun-photometer Cimel CE 318 measurements are used. The sites considered are: Barcelona (41.38º N, 2.17º E), Burjassot (39.51º N, 0.42º W), Cabo da Roca (38.78º N, 9.50º W), Évora (38.57º N, 7.91º W), Granada (37.16º N, 3.61º W) and Madrid (40.45º N, 3.72º W). In general, large aerosol optical depths (AOD) and …
First-time lidar measurement of water vapor flux in a volcanic plume
2011
Abstract The CO 2 laser-based lidar ATLAS has been used to study the Stromboli volcano plume. ATLAS measured water vapor concentration in cross-sections of the plume and wind speed at the crater. Water vapor concentration and wind speed were retrieved by differential absorption lidar and correlation technique, respectively. Lidar returns were obtained up to a range of 3 km. The spatial resolution was 15 m and the temporal resolution was 20 s. By combining these measurements, the water vapor flux in the Stromboli volcano plume was found. To our knowledge, it is the first time that lidar retrieves water vapor concentrations in a volcanic plume.
Ancilus ezera un Litorīnas jūras krasta līnijas Ventspils lagūnas apkārtnē
2021
Secīgās Baltijas jūras attīstības stadijas ietekmējušas senās Ventspils lagūnas aptvertās teritorijas, kur konstatējami Ancilus ezera un Litorīnas jūras stadiju krasta veidojumi. Izvirzīts mērķis – detektēt un verificēt šo stadiju krasta līnijas, pielietojot automatizētu metodiku. Modelējot teritorijai atbilstošus laika periodus, iegūti 25 krasta līniju modeļi, kas apvienoti 10 krastos. Modeļi verificēti pret izveidoto reljefa modeli, kā arī attiecīgi iepriekšējo paleoģeogrāfisko un arheoloģisko pētījumu rezultātiem un šī darba laikā iegūto paraugu optiski stimulētās luminiscences datējumiem. Maģistra darbā dots precīzs skaidrojums par teritorijas attīstību akmens laikmetā, paplašinot arheo…
Etude de la côte viticole par laser aéroporté (Lidar)
2012
International audience
De l’individualisme à la solidarité sociale : la philosophie de la guerre dans les textes beauvoiriens
2016
The horrors and suffering of World War II directly affected Simone de Beauvoir. Exposed to destruction and pervasive death, and haunted by the separation from her beloved, she is bound to conclude that an individual—especially an intellectual—is powerless when confronted with extreme violence. In this context, the writer becomes increasingly aware that action must be taken to defend both the common good and those whose lives are under threat. The restrained existentialist—an independent woman focused on her personal development and happiness—thus undergoes a kind of evolution, and becomes an author sincerely concerned with other people and their basic needs— especially with those suffering …
Els horts solidaris, una eina per a la reinserció sociolaboral: el cas de l'Horta de València
2013
Charity gardens are a proposal for social intervention, which may form part of social and labour active inclusion policies, within the structure of the territory, generating a social and economic system. This study examines the model of French garden created in Réseau Cocagne and compares this with the analysis of similar business cases found in Spain. The paper focuses on the importance of using traditional agricultural spaces in peri-urban areas, through being areas where several factors and functions converge, capable of generating social, economic and environmental wealth helping to promote social inclusion.
Sicurezza e populismo. I migranti alla frontiera del diritto penale
2023
Il presente lavoro di ricerca ha ad oggetto la criminalizzazione delle migrazioni nell'èra del cosiddetto populismo, e in particolare del populismo penale. Invero, negli ultimi anni si è assistito ad una espansione incontrollata del potere punitivo che, sotto la pressione di un bisogno collettivo di sicurezza, ha condotto ad una vera e propria disumanizzazione del diritto penale (e punitivo-amministrativo), nel duplice significato che quest’ultima espressione rivestiva secondo la giurispoeta Mireille Delmas-Marty: "quello di un diritto penale che si sta deumanizzando, e quindi deumanizzato, in quanto sempre più distante dai principi dell'umanesimo giuridico; e quello di un diritto penale de…