An automated approach to detecting instream wood using airborne laser scanning in small coastal streams

Kuiper, Spencer Dakin; Coops, Nicholas C.; Jarron, Lukas R.; Tompalski, Piotr; White, Joanne C.

doi:10.1016/j.jag.2023.103272

Cited by 4 publications

(2 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To supplement field methods used to characterize wood accumulations, remotely sensed imagery and topographic data are often used to extract physical and ecological attributes of a river corridor and to detect change over time. Existing remote sensing tools for collecting wood characteristic data include using airborne lidar (Abalharth et al, 2015;Atha & Dietrich, 2016;Dakin Kuiper et al, 2023;Ulloa et al, 2015), terrestrial laser scanning (Grigillo et al, 2015;Tonon et al, 2014), or structure-from-motion (SfM) photogrammetry using images collected from drones (Sanhueza et al, 2018;Spreitzer et al, 2022) or mounted cameras (Spreitzer et al, 2019(Spreitzer et al, , 2020. Spreitzer et al (2022) used SfM photogrammetry to develop an empirical approach for the approximation of wood accumulation characteristics (porosity, volume, packing arrangement) without needing to know the solid wood volume.…”

Section: Existing Methods For Characterizing Woodrich River Corridorsmentioning

confidence: 99%

Handheld lidar as a tool for characterizing wood‐rich river corridors

Marshall,

Morrison,

Jones

et al. 2024

River Research & Apps

View full text Add to dashboard Cite

Wood accumulations influence geomorphic, hydraulic, and ecologic functions within a river corridor, but characterizing these accumulations presents challenges across a range of field and remote sensing methodologies. We evaluate the ability of handheld lidar scanners, specifically lidar‐scanning capabilities of a fourth‐generation iPad Pro, to collect three‐dimensional wood accumulation data, which can be used to inform measurements of wood volume, porosity, complexity, and roughness. We discuss the potential and limitations of this novel methodology for river research and management. We found that handheld lidar presents a cost‐effective input for data‐processing workflows that field measurements of wood accumulation dimensions cannot as easily replicate including (1) a user‐friendly means of data collection and visualization; (2) accurate comparisons of wood volume over time; (3) integration into workflows to measure porosity parameters; and (4) potential use in informing hydraulic and morphodynamic models. Consideration of study area constraints and intended use of scans are prerequisites to using handheld lidar as an effective tool. We identified some specific limitations of using handheld lidar scanners in wood‐rich river corridors, including (1) scanners perform poorly when wood is under water or surrounded by dense vegetation; (2) scanners require physical access to areas of interest at distances less than 5 m; (3) scans need to be manually georeferenced; and (4) scans require manual measurements for any dimensional data, which still have associated user time and error. Handheld lidar as a scientific tool is rapidly developing and there is substantial room for expansion of applications, utilization, and advances in the use of this tool in river research and management.

show abstract

Section: Existing Methods For Characterizing Woodrich River Corridorsmentioning

confidence: 99%

Handheld lidar as a tool for characterizing wood‐rich river corridors

Marshall,

Morrison,

Jones

et al. 2024

River Research & Apps

View full text Add to dashboard Cite

show abstract

“…Kualitas ini ditentukan dari kepadatan, kehalusan serat, kekohohan, tingkat kelembaban dan lokasi tumbuh [1]. Penentuan kualitasnya dapat menghasilkan produk unggulan berupa furnitur yang ramah lingkungan [2].…”

Section: Pendahuluanunclassified

Perancangan Meja Lipat Multifungsi yang Ergonomis Menggunakan Metode Pahl and Beitz dan Value Engineering pada Mahasiswa Aktif di Daerah Ngawi

Adellia,

Safirin

2023

jatiunik. jurnal. ilm. teknik. manaj. industri.

View full text Add to dashboard Cite

Di era saat ini yaitu pandemi maupun tidak banyak pekerja dan mahasiswa yang belajar di rumah menggunakan meja lipat, namun belum ergonomis hal ini menyebabkan penggunanya kurang nyaman. Penelitian ini bertujuan untuk menghasilkan rancangan produk meja lipat multifungsi yang ergonomis dengan biaya minimal dengan metode Value Engineering dan Pahl and Beitz menggunakan perhitungan antropometri. Hasil yang didapat dari perhitungan produk meja lipat mutlfiungsi yang ergonomis ini adalah dimensi meja 75x54cm, untuk tinggi kaki meja 35-40cm. Hasil dari metode value engineering dari 3 alternatif yang dibuat yang terpilih adalah alternatif 3 dengan harga minimal. Alternatif 3 ini memiliki value sebesar 1,25 dengan biaya Rp355.000 dengan harga asli meja lipat sebesar Rp100.000 karena adanya penambahan fitur lampu, tempat minum, USB, dan kaki meja dapat di adjust. Dengan penelitian ini diharapkan meja lipat dapat dibuat secara ergonomis agar pengguna merasa nyaman dan aman.

show abstract

Current progress in quantifying and monitoring instream large wood supply and transfer in rivers

Ruiz‐Villanueva,

Aarnink,

Ghaffarian

et al. 2024

Earth Surf Processes Landf

View full text Add to dashboard Cite

Large wood drives both the form and function of gravel‐bed rivers draining forested basins. Previously overlooked benefits of wood in rivers are now widely recognized. Together with flow and sediment regimes, the wood regime controls rivers' physical and ecological integrity. Yet large quantities of wood transported during floods can pose additional hazards, potentially damaging infrastructures like bridges or dams and exacerbating flooding. However, unlike the water and sediment regimes intensively studied over the past decades, the instream wood regime or budgeting has been only recently defined and thus is still rarely quantified. The instream wood budget describes the cascading processes from supply or recruitment, entrainment, and transport to deposition, storage and decay (i.e., fragmentation or decomposition). These processes show high spatial and temporal variability but can be characterized by magnitude, frequency, timing, duration and mode. Instream wood budgeting is challenging, primarily because of the lack of observations, monitoring stations, and standardized protocols to acquire data. This contribution reviews the most recent advances to quantify the different instream wood budget components, notably the wood supply, and transfer. Case studies showing applications of biogeochemistry, videography, artificial intelligence, numerical modelling or tracking illustrate the current progress. Because critical challenges remain, we identify and describe some of them and discuss how the wood in riverine sciences may develop in the future.

show abstract

An automated approach to detecting instream wood using airborne laser scanning in small coastal streams

Cited by 4 publications

References 33 publications

Handheld lidar as a tool for characterizing wood‐rich river corridors

Handheld lidar as a tool for characterizing wood‐rich river corridors

Perancangan Meja Lipat Multifungsi yang Ergonomis Menggunakan Metode Pahl and Beitz dan Value Engineering pada Mahasiswa Aktif di Daerah Ngawi

Current progress in quantifying and monitoring instream large wood supply and transfer in rivers

Contact Info

Product

Resources

About