Results 21 to 30 of about 196,454 (289)

Acoustic Seafloor Classification Using the Weyl Transform of Multibeam Echosounder Backscatter Mosaic

open access: yesRemote Sensing, 2021
The use of multibeam echosounder systems (MBES) for detailed seafloor mapping is increasing at a fast pace. Due to their design, enabling continuous high-density measurements and the coregistration of seafloor’s depth and reflectivity, MBES has become a ...
Ting Zhao   +4 more
doaj   +1 more source

Estimation of magnitudes of debris flows in selected torrential watersheds in Slovenia [PDF]

open access: yes, 2006
In this paper the application of different methods for estimation of magnitudes of rainfall-induced debris flows in 18 torrents in the Upper Sava River valley, NW Slovenia, and in 2 torrents in Pohorje, N Slovenia is described. Additional verification of
Mikoš, Matjaž, Sodnik, Jošt
core   +2 more sources

Geochemical reactivity of subsurface sediments as potential buffer to anthropogenic inputs: a strategy for regional characterization in the Netherlands [PDF]

open access: yes, 2011
Geochemical reactivity of subsurface sediments as potential buffer to anthropogenic inputs: a strategy for regional characterization in the ...
Gaans, P.F.M., van   +3 more
core   +3 more sources

Classifications of runoff and sediment data to improve the rating curve method

open access: yesJournal of Agricultural Engineering, 2017
In this study, data classification method was evaluated to increase accuracy of estimating suspended sediment load. To achieve this objective, suspended sediment in Chehelgazi and Khalife Tarkhan rivers in Kurdistan, Iran, were estimated using sediment ...
Hossein Khaledian   +2 more
doaj   +1 more source

Klasifikasi Jenis dan Sebaran Sedimen Menggunakan Data Multibeam Echosounder Multi-Temporal di Alur Pelayaran Barat dan Timur Surabaya

open access: yesJournal of Geospatial Information Science and Engineering, 2021
Pelabuhan Tanjung Perak Surabaya merupakan salah satu pelabuhan utama di Indonesia yang memiliki peran penting dalam transportasi laut Indonesia.
Fadilla Ivana Ayuningtyas   +1 more
doaj   +1 more source

Remote sensing of sediment characteristics by optimized echo-envelope matching [PDF]

open access: yes, 2003
A sediment geoacoustic parameter estimation technique is described which compares bottom returns, measured by a calibrated monostatic sonar oriented within 15° of vertical and having a 10°–21° beamwidth, with an echo envelope model based on high ...
de Moustier, Christian   +1 more
core   +2 more sources

Islandinium pacificum sp. nov., a new dinoflagellate cyst from the upper Quaternary of the northeast Pacific [PDF]

open access: yes, 2020
Round brown process-bearing cysts (RBPC) produced by dinoflagellates (Dinophyceae) occur as an important part of assemblage diversities in seafloor sediments worldwide. Here a new species, Islandinium pacificum, is described from surface sediment samples
Gurdebeke, Pieter   +4 more
core   +2 more sources

Mapping of Sediment on the Waters Around Panjang Island, Banten Bay, Indonesia

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2021
This study was conducted to map the surface sediment conditions in the waters around Panjang Island, Banten Bay. The survey method was conducted in February 2015 by taking sediment samples using a grab sampler at 15 stations.
Syawaludin A Harahap   +3 more
doaj   +1 more source

Enhancing seabed sediment classification with multibeam echo-sounding and self-training: a case study from the East Sea of South Korea

open access: yesFrontiers in Earth Science
IntroductionAccurate classification of seabed sediments is essential for marine spatial planning, resource management, and scientific research. While direct sampling yields precise sediment information, it is costly and spatially limited.
Changhoon Lee   +4 more
doaj   +1 more source

Estimation of policy-relevant reference conditions throughout national river networks

open access: yesMethodsX, 2021
A method for objectively estimating reference states for suspended fine sediment (turbidity) is presented. To be fit for water policy development and implementation the method had to satisfy four requirements: (1) the method must not be dependent on data
Rick J. Stoffels   +7 more
doaj   +1 more source

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