Results 71 to 80 of about 48,735,301 (199)

Simultaneous Generation of Topographic Models and Manning Roughness Coefficient Maps From Tri‐Stereoscopic Satellite Images: Application to the Huarmey River, Peru

The Photogrammetric Record, Volume 41, Issue 195, July‐September 2026.
Tri‐stereoscopic PeruSat‐1 imagery enables the simultaneous generation of 0.70 m‐resolution topography and spatially distributed Manning roughness maps, achieving 0.434 m vertical accuracy. Integrated into HEC‐RAS, these products provide consistent, high‐resolution inputs that improve hydraulic modelling and flood risk assessment in data‐scarce river ...
Jorge L. Miranda‐Pita, Pedro A. Plaza‐Álvarez, Jorge Lopez‐Rebollo, Diego González‐Aguilera   +3 more
wiley   +1 more source

Mapping the distribution of natural ecosystems on peatlands through vegetation using the object-based image analysis (obia) method in bangko district, rokan hilir regency, riau.

IOP Conference Series: Earth and Environmental Science, 2022
Abstract Expansion of the use of natural ecosystems on peatlands is increasing rapidly in Bangko District, Rokan Hilir Regency, Riau. This utilization tends to cause damage to the natural ecosystem of peatlands which has a major impact on the local environment (in situ) and the surrounding environment (ex situ), so a mapping is needed to
M.S. Roganda, Sigit Heru Murti, Wirastuti Widyatmanti   +2 more
openaire   +1 more source

APLIKASI OBJECT-BASED IMAGE ANALYSIS (OBIA) UNTUK DETEKSI PERUBAHAN PENGGUNAAN LAHAN MENGGUNAKAN CITRA ALOS AVNIR-2 [PDF]

, 2012
Ketersediaan data penginderaan jauh semakin banyak, diiringi pula teknik ekstraksi informasinya. Salah satunya berupa Object-Based Image Analysis (OBIA).
R. Suharyadi, R. Suharyadi; Fakultas Geografi UGM, Wibowo, Tunjung S; Fakultas Geografi UGM   +1 more
core  

Sediment addition to address tidal marsh elevation deficits caused by farm impoundments: a Delaware Bay, New Jersey, United States case study

Restoration Ecology, Volume 34, Issue 5, July 2026.
Abstract Introduction Dredge material use is emerging as an important technique for restoring marshes threatened by historic mismanagement and sea‐level rise, yet optimal methods to maximize ecological benefit remain under development. The Delaware Estuary is in urgent need of restoration, as historic agricultural conversion caused substantial and ...
Stephanie Feigin, Joseph A. M. Smith, Steve Hafner, Theo Diehl, Aleksandr Modjeski, Tim Dillingham, Shane Godshall, Joanna Burger, Larry Niles   +8 more
wiley   +1 more source

Remote Sensing for Monitoring and Managing Urban Soils in Coastal Areas: A Review

Soil Use and Management, Volume 42, Issue 3, July‐September 2026.
ABSTRACT Coastal urban soils (CUS) exhibit distinct physical–chemical properties due to the combined effects of intense interaction among anthropogenic and natural pressures, resulting in a unique, complex and highly vulnerable system. While CUS are vital for the urban coastal environment and its inhabitants, numerous factors significantly threaten ...
Antonio Ganga, Alessandro Auzzas, Rafael Barroca Silva, Gian Franco Capra   +3 more
wiley   +1 more source

Mapping Crop Calendar Events and Phenology-Related Metrics at the Parcel Level by Object-Based Image Analysis (OBIA) of MODIS-NDVI Time-Series: A Case Study in Central California [PDF]

Remote Sensing, 2018
Remote sensing technology allows monitoring the progress of vegetation and crop phenology in large regions. Seasonal vegetation trends are commonly estimated from high temporal resolution but coarse spatial resolution satellite imagery, e.g., from MODIS-NDVI (Moderate Resolution Imaging Spectroradiometer—Normalized Difference Vegetation Index) time ...
Ana I. de Castro, Johan Six, Richard E. Plant, José M. Peña 0003   +3 more
openaire   +4 more sources

Sentinel 1a-2a Incorporating an Object-Based Image Analysis Method for Flood Mapping and Extent Assessment [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This study presents flood extent extraction and mapping from Sentinel images. Here we suggest an algorithm for extracting flooded areas from object-based image analysis (OBIA) using Sentinel-1A and Sentinel-2A images to map and assess the flood extent ...
D. Azhand, D. Azhand, S. Pirasteh, M. Varshosaz, M. Varshosaz, H. Shahabi, H. Shahabi, S. Abdollahabadi, H. Teimouri, M. Pirnazar, X. Wang, W. Li   +11 more
doaj   +1 more source

Biofortification of finger millet with zinc and iron under biochar amendment: Effects of soil and foliar fertilization on yield and grain quality

Agrosystems, Geosciences &Environment, Volume 9, Issue 2, June 2026.
Abstract Biofortification is an effective strategy to improve the micronutrient content of staple crops. However, biofortification of finger millet (Eleusine coracana L.) with zinc (Zn) and iron (Fe) has not been adequately investigated under biochar amendment.
Alinafe Manjawire, Peter Omara, Vegard Martinsen, Rajiv Kumar Srivastava, Fred Otim, Tonny L. Provin, Ronnie Schnell, Alfred Obia   +7 more
wiley   +1 more source

Studi Komparasi Teknik Klasifikasi berbasis Objek terhadap Citra Resolusi Spasial Menengah dan Tinggi untuk Pemetaan Tutupan Lahan di Sebagian Kabupaten Kulonprogo

Majalah Geografi Indonesia
Abstrak Tingginya kebutuhan informasi tutupan lahan dalam berbagai sektor perencanaan dapat disediakan secara time-and-cost effective melalui analisa citra penginderaan jauh, diantaranya menggunakan OBIA (object based image analysis).
Erisa Ayu Waspadi Putri, Projo Danoedoro, Nur Mohammad Farda   +2 more
doaj   +1 more source

Detecting Long-Term Urban Forest Cover Change and Impacts of Natural Disasters Using High-Resolution Aerial Images and LiDAR Data

Remote Sensing, 2020
Urban forests provide ecosystem services; tree canopy cover is the basic quantification of ecosystem services. Ground assessment of the urban forest is limited; with continued refinement, remote sensing can become an essential tool for analyzing the ...
Raoul Blackman, Fei Yuan
doaj   +1 more source