Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Petteri Alho"'
Publikováno v:
Journal of Hydrology: Regional Studies, Vol 53, Iss , Pp 101749- (2024)
Study region: Finland divided into three subregions, each representing different environmental conditions. Study focus: This study investigates long-term changes in unregulated river discharge. Trends in high- and low-flow event volumes, magnitudes,
Externí odkaz:
https://doaj.org/article/e30b810674564801b084c72de093e5e5
Autor:
Carlos Gonzales-Inca, Mikel Calle, Danny Croghan, Ali Torabi Haghighi, Hannu Marttila, Jari Silander, Petteri Alho
Publikováno v:
Water, Vol 14, Iss 14, p 2211 (2022)
This paper reviews the current GeoAI and machine learning applications in hydrological and hydraulic modeling, hydrological optimization problems, water quality modeling, and fluvial geomorphic and morphodynamic mapping. GeoAI effectively harnesses t
Externí odkaz:
https://doaj.org/article/b02e7cc96dee4fea8c324caaf2fc3f77
Autor:
Tua Nylén, Elina Kasvi, Jouni Salmela, Harri Kaartinen, Antero Kukko, Anttoni Jaakkola, Juha Hyyppä, Petteri Alho
Publikováno v:
PLoS ONE, Vol 14, Iss 12, p e0225936 (2019)
This study aimed at illustrating how direct measurements, mobile laser scanning and hydraulic modelling can be combined to quantify environmental drivers, improve vegetation models and increase our understanding of vegetation patterns in a sub-arctic
Externí odkaz:
https://doaj.org/article/d755ae3c15514ed8b723f08470d409e9
Publikováno v:
Water, Vol 12, Iss 7, p 1874 (2020)
Macro-turbulent flows (i.e., coherent flow structures reaching through the whole water column), have not been studied widely in northern seasonally frozen rivers during both open-channel and ice-covered flow conditions. Thus, we aim: (1) to detect an
Externí odkaz:
https://doaj.org/article/b7f6a8bc68d14554931a89a10c2bb7ff
Autor:
Ville Kankare, Jari Vauhkonen, Markus Holopainen, Mikko Vastaranta, Juha Hyyppä, Hannu Hyyppä, Petteri Alho
Publikováno v:
Forests, Vol 6, Iss 6, Pp 1839-1857 (2015)
The demand for cost-efficient forest aboveground biomass (AGB) prediction methods is growing worldwide. The National Land Survey of Finland (NLS) began collecting airborne laser scanning (ALS) data throughout Finland in 2008 to provide a new high-det
Externí odkaz:
https://doaj.org/article/66decd69a6604ca48be4bfa44bfe7730
Autor:
Claude Flener, Yunsheng Wang, Leena Laamanen, Elina Kasvi, Jenni-Mari Vesakoski, Petteri Alho
Publikováno v:
Water, Vol 7, Iss 1, Pp 217-247 (2015)
The use of acoustic Doppler current profilers (ADCP) for measuring streamflow and discharge is becoming increasingly widespread. The spatial distribution of flow patterns is useful data in studying riverine habitats and geomorphology. Until now, most
Externí odkaz:
https://doaj.org/article/c479272a133c45d890f83a9090548365
Publikováno v:
ISPRS International Journal of Geo-Information, Vol 3, Iss 3, Pp 871-890 (2014)
Rapid prototyping has received considerable interest with the introduction of affordable rapid prototyping machines. These machines can be used to manufacture physical models from three-dimensional digital mesh models. In this paper, we compare the r
Externí odkaz:
https://doaj.org/article/b4fa506da5104c0a8884ea666ecf90fe
Autor:
Ville Kankare, Marianna Joensuu, Jari Vauhkonen, Markus Holopainen, Topi Tanhuanpää, Mikko Vastaranta, Juha Hyyppä, Hannu Hyyppä, Petteri Alho, Juha Rikala, Marketta Sipi
Publikováno v:
Forests, Vol 5, Iss 8, Pp 1879-1895 (2014)
Preharvest information on the quality of Scots pine (Pinus sylvestris) timber is required by the forest industry in Nordic countries, due to the strong association between the technical quality and product recovery of this species in particular. The
Externí odkaz:
https://doaj.org/article/84aa29990b484140a6f3d09963484024
Autor:
Jenni-Mari Vesakoski, Petteri Alho, Juha Hyyppä, Markus Holopainen, Claude Flener, Hannu Hyyppä
Publikováno v:
Water, Vol 6, Iss 2, Pp 271-300 (2014)
Topographic depressions have an important role in hydrological processes as they affect the water balance and runoff response of a watershed. Nevertheless, research has focused in detail neither on the effects of acquisition and processing methods no
Externí odkaz:
https://doaj.org/article/aead3a4a17f64bfcb48c546f7eee9794
Autor:
Claude Flener, Matti Vaaja, Anttoni Jaakkola, Anssi Krooks, Harri Kaartinen, Antero Kukko, Elina Kasvi, Hannu Hyyppä, Juha Hyyppä, Petteri Alho
Publikováno v:
Remote Sensing, Vol 5, Iss 12, Pp 6382-6407 (2013)
Accurate terrain models are a crucial component of studies of river channel evolution. In this paper we describe a new methodology for creating high-resolution seamless digital terrain models (DTM) of river channels and their floodplains. We combine
Externí odkaz:
https://doaj.org/article/6d585e6950df46968daca5e2d2421041