Zjišťování změn polohy ELA ledovců v pohoří Cordillera Blanca, Peru, z dat DPZ

Cílem této diplomové práce je zmapovat změny ledovců v Cordillera Blanca v období od roku 1987 do roku 2014. Tato diplomová práce zaměřuje pozornost na tři hory a jedenáct ledovců v severní části Cordillera Blanca. Vstupní data tvoří 29 Landsat scén (Landsat 4,5,7 a 8) a ASTER globální digitální výškový model verze 2. Poloautomatický klasifikační algoritmus je vytvořen na základě prahových hodnot zjištěných spektrální analýzou vybraných typů krajinného pokryvu v Cordillera Blanca. Kromě toho, výšková změna střední sněžné čáry (Equilibrium line altitude - ELA) je vypočtena pro všechny tři hory a jedenáct ledovců. Dále je počítána změna ledovců v závislosti na sklonu a aspektu. Výsledky této práce jsou prezentovány v podobě map, tabulek a grafů. Výsledky klasifikace jsou porovnány s GLIMS databází ledovců a s terénním měřením provedeném Mgr. Adamem Emmerem. Na závěr jsou diskutovány výhody a nevýhody snímků pořízených novým satelitem Landsat 8. Klíčová slova: DPZ, Landsat, klasifikace, mapování sněhu a ledu, ELA, Cordillera BlancaThe aim of this diploma thesis is to monitor glacier change in the Cordillera Blanca in the period from 1987 to 2014. This diploma thesis focuses on three mountains and eleven glaciers in the northern part of the Cordillera Blanca. The input data consist of 29 Landsat scenes (Landsat 4,5,7 and 8) and the ASTER global digital elevation model version 2. Semi-automatic classification algorithm is created based on threshold values detected by spectral analyses of selected land cover types in the Cordillera Blanca. Additionally, the mean snowline (equilibrium line) altitude change is computed for all of the three mountains and eleven glaciers. Besides, glacier change depending on slope and aspect is evaluated. The results of this diploma thesis are presented in maps, tables and charts. The results of the classification are compared with the GLIMS Glacier Database and the field measurements provided by Adam Emmer, MSc. Finally, the advantages and disadvantages of the new Landsat 8 satellite sensor are discussed. Key words: Remote sensing, Landsat, classification, ice and snow detection, ELA, Cordillera BlancaKatedra aplikované geoinformatiky a kartografieDepartment of Applied Geoinformatics and CartographyPřírodovědecká fakultaFaculty of Scienc

Detection of Equilibrium Line Altitude (ELA) Changes from Remote Sensing Data; Case Study from the Cordillera Blanca, Peru

The aim of this diploma thesis is to monitor glacier change in the Cordillera Blanca in the period from 1987 to 2014. This diploma thesis focuses on three mountains and eleven glaciers in the northern part of the Cordillera Blanca. The input data consist of 29 Landsat scenes (Landsat 4,5,7 and 8) and the ASTER global digital elevation model version 2. Semi-automatic classification algorithm is created based on threshold values detected by spectral analyses of selected land cover types in the Cordillera Blanca. Additionally, the mean snowline (equilibrium line) altitude change is computed for all of the three mountains and eleven glaciers. Besides, glacier change depending on slope and aspect is evaluated. The results of this diploma thesis are presented in maps, tables and charts. The results of the classification are compared with the GLIMS Glacier Database and the field measurements provided by Adam Emmer, MSc. Finally, the advantages and disadvantages of the new Landsat 8 satellite sensor are discussed. Key words: Remote sensing, Landsat, classification, ice and snow detection, ELA, Cordillera Blanc

Analysis and optimalization of the accessibility of emergency services in the CR using GIS tools

The bachelor's thesis deals with modeling the current situation of Emergency medical services in the Czech Republic in terms of surface area coverage and accessibility of the ground rescue units. Also the subject of the project is to suggest improvements in distribution of outpost of Emergency medical services after the changes in act of emergency medical services, which newly declares the arriving time to 20 minutes. The project was developed in ArcGIS 10. The basic hypothesis of a lower number of ambulance outposts after optimization was confirmed, but the assumption, that emergency medical services have reserves for worse traffic situations, was partly refuted. Key words network analysis, Emergency medical services, Network Analyst, accessibility, optimizatio