Essays about: "digital elevation model DEM"

Showing result 1 - 5 of 48 essays containing the words digital elevation model DEM.

1. 1. GIS and remote sensing based mapping of microtopography and vegetation composition in a boreal mire complex

   University essay from SLU/Dept. of Forest Ecology and Management

   Author : Nils Helge Havertz; [2023]
   Keywords : Microtopography modelling; Remote sensing; Boreal mixed mires; Object Based Image Analysis OBIA ; random forest RF ;

   Abstract : Small scale variations in mire surface elevation referred to as microtopography are fundamental characteristics of mire ecosystems especially in the boreal region. Microtopography commonly classified into hummocks and hollows play a major role in several ecological, hydrological and biogeochemical processes including vegetation composition and carbon and methane dynamics. READ MORE

3. 2. Road traffic noise simulations based on 3D city models

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Wenjing Liu; [2023]
   Keywords : 3D city model; 3CIM; CNOSSOS-EU; noise simulation; city noise evaluation; data tailor; FME; SoundPLAN; Geomatics; Earth and Environmental Sciences;

   Abstract : Urban development and densification cause noise problems that can have a negative impact on human health. In 2002, the European Union (EU) stated the European Noise Directive (END) with the purpose to evaluate environmental noise levels (including the sources road, railway, and air traffic) in the member states every 5 years. READ MORE

4. 3. Evaluating DInSAR for measuring seasonal elevation dynamics at the Vissátvuopmi palsa mire complex in Northern Sweden

   University essay from Göteborgs universitet/Institutionen för geovetenskaper

   Author : André Farjami; [2022-09-09]
   Keywords : ;

   Abstract : During recent years the palsa mires of Fennoscandia have reported to be undergoing extensive lateral degradation, and in a warming environment the palsa mires of Sweden among others are threatened to thaw completely by the end of this century. Since subarctic peatlands account for 30% of the global soil organic carbon storage, small degradation changes in these areas globally, can potentially change the greenhouse gas emissions on a worldwide scale. READ MORE

5. 4. Urban infrastructure inundation risk from permanent sea-level rise scenarios in London (UK), Bangkok (Thailand) and Mumbai (India): A comparative analysis

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Shawn Pace; [2021]
   Keywords : Geography; GIS; Climate Change; Sea-Level Rise; Urban Infrastructure; DEM; London; Mumbai; Bangkok; Earth and Environmental Sciences;

   Abstract : Due to anthropogenically created climate change, global cities are facing inundation by rising sea levels. This study aimed to fill knowledge gaps in understanding the exposure of urban infrastructure such as roads, railways, buildings and parks to sea-level rise (SLR) scenarios, and how this would affect local populations. READ MORE

6. 5. Methods for assessing the consistency of the New National Height Model

   University essay from KTH/Fastigheter och byggande

   Author : Sandra Rangelova; [2021]
   Keywords : DEM; LiDAR; Air-borne LiDAR; strip adjustment; quality control; DEM; LiDAR; Luftburna LiDAR; bandjustering; kvalitetskontroll;

   Abstract : Digital Elevation Models (DEM) are a simple representation of the Earth’s surface. DEMs play an important role in the field of remote sensing and GIS and are used as basis for mapping and analysis for a vest majority of scientific applications. READ MORE