Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Harli Jürgenson"'
Autor:
Ahto Kangur, Kristi Nigul, Allar Padari, Andres Kiviste, Henn Korjus, Diana Laarmann, Eneli Põldveer, Risto Mitt, Lee E. Frelich, Kalev Jõgiste, John A. Stanturf, Teele Paluots, Vivika Kängsepp, Harli Jürgenson, Steffen M. Noe, Allan Sims, Marek Metslaid
Publikováno v:
Forestry Studies. 75:15-40
The study area is in the Järvselja Training and Experimental Forest Centre, Estonia. The conservation of Järvselja old-growth forest started in 1924 when the area was excluded from all management activities and left to natural development. The aim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfb2f6b37d04961eb32a50cf65263566
https://doi.org/10.2478/fsmu-2021-0009
https://doi.org/10.2478/fsmu-2021-0009
Autor:
Artu Ellmann, Harli Jürgenson
Publikováno v:
Geodesy and Cartography, Vol 34, Iss 2 (2012)
Nowadays, many geodetic and engineering applications require that the two essential components of the vertical positioning – the height and the corresponding reference surface (geoid), are determined precisely. The recent advancements of satellite
Externí odkaz:
https://doaj.org/article/478a9f0e74404262921035e9f8565104
Publikováno v:
Geodesy and Cartography, Vol 34, Iss 4 (2012)
The idea was to compare the geoid in sea areas by an independent method, like GPS levelling, on the mainland. On the earth surface we can compare the gravimetric geoid with GPS levelling to get an accuracy estimation and tilt information. On the sea
Externí odkaz:
https://doaj.org/article/b4d3fe34999e4bba8d398f83df9c0ebd
Publikováno v:
Geodesy and Cartography, Vol 37, Iss 1 (2011)
This paper focuses on issues related to the calculation of a high-precision fitted geoid model on Estonian territory. Model Est-Geoid2003 have been used in Estonia several years in geodesy and other applications. New data from precise levelling, new
Externí odkaz:
https://doaj.org/article/cc0a6adfb1fa4d729c41400591564515
Autor:
Allar Padari, Diana Laarmann, John A. Stanturf, Ahto Kangur, Steffen M. Noe, Andres Kiviste, Kalev Jõgiste, Teele Paluots, Marek Metslaid, Lee E. Frelich, Vivika Kängsepp, Eneli Põldveer, Harli Jürgenson, Kristi Nigul, Henn Korjus
Publikováno v:
Forests, Vol 12, Iss 184, p 184 (2021)
Forests
Volume 12
Issue 2
Forests
Volume 12
Issue 2
In light of the difficulties in stand volume estimation of natural forests, we analyzed height–diameter relationships and derived a set of height estimation equations for volume estimation for naturally developing forest ecosystems, using the Järv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da4db76dfef4e5a16ba69406f3e526cc
https://doi.org/10.3390/f12020184
https://doi.org/10.3390/f12020184
Publikováno v:
Marine Geodesy. 36:138-163
This study investigates the applicability of hydrodynamic leveling by means of contemporary pressure gauges for achieving geodetic accuracy in height determination. The main problems associated with pressure gauges are rigorous connection to a nation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4e6dbf0577e1daf522c4dde35f557ef
https://doi.org/10.1080/01490419.2013.771594
https://doi.org/10.1080/01490419.2013.771594
Publikováno v:
International Association of Geodesy Symposia ISBN: 9783319246031
For accurate regional gravity field modelling it is vital to have dense and high quality data coverage. Ice gravimetry is a viable alternative to ship- and airborne gravimetry to help fill gaps over marine areas. A number of factors affect the accura
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e41ed8ab4e0b088ed8d748e1d3cb69a6
https://doi.org/10.1007/1345_2015_163
https://doi.org/10.1007/1345_2015_163
Publikováno v:
Gravity, Geoid and Height Systems ISBN: 9783319108360
Medium resolution (1–3 arc-min) gravity anomaly grids do not reflect reality very accurately over terraced landforms, which in turn may affect the uncertainty of subsequent geoid modelling. This inaccuracy is due to many factors. The gravimetric da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c202159fbb2d674ea2e61921d7562c2
https://doi.org/10.1007/978-3-319-10837-7_20
https://doi.org/10.1007/978-3-319-10837-7_20
Publikováno v:
SPIE Proceedings.
Small footprint airborne laser scanning (ALS) is widely used to collect topographic data over large areas. ALS point clouds provide high resolution datasets for variety of scientific and engineering applications, e.g. geomorphology, geodynamics and f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96e3f2190a149650710c7c76459518f6
https://doi.org/10.1117/12.2029189
https://doi.org/10.1117/12.2029189