Results 71 to 80 of about 125,832 (310)

Detection of changes in coral reef communities using Landsat-5 TM and Landsat-7 ETM+ data

Canadian Journal of Remote Sensing, 2003
Satellite remote sensing is increasingly used to map and monitor coral reefs. From 1984 to the present, Landsat-5 thematic mapper (TM) and Landsat-7 enhanced thematic mapper plus (ETM+) images provide the longest time series available for change detection analysis over coral reefs. A time series of four Landsat-5 images and one Landsat-7 image spanning
Palandro, D., Andréfouët, S., Muller-Karger, Frank E, Dustan, P., Hu, C., Hallock, P.   +5 more
openaire   +2 more sources

Application of LANDSAT to the surveillance and control of lake eutrophication in the Great Lakes basin [PDF]

The author has identified the following significant results. Computer techniques were developed for mapping water quality parameters from LANDSAT data, using surface samples collected in an ongoing survey of water quality in Saginaw Bay.
Rogers, R. H.
core   +1 more source

Improving forest age estimation to understand subtropical forest regrowth dynamics using deep learning image segmentation of time‐series historical aerial photographs

Remote Sensing in Ecology and Conservation, EarlyView.
Accurately estimating forest age is key to understanding how forests recover and evaluating restoration success. We developed a two‐step deep learning approach using historical greyscale aerial photographs to map forest age at fine spatial scales. By combining a pre‐trained model with localized fine‐tuning, our U‐Net + ResNet50 architecture achieved ...
Ying Ki Law, Yi‐Fei Gu, Shuwen Liu, Guangqin Song, Aland H. Y. Chan, Cham Man Tse, Zhonghua Liu, Martha J. Ledger, Billy C. H. Hau, Sawaid Abbas, Jin Wu   +10 more
wiley   +1 more source

Hydrothermally altered mineral mapping of the Malanjkhand copper mineralization in India using Landsat satellite data

Geology, Ecology, and Landscapes
The study evaluates how Landsat-5 Thematic Mapper (TM), Landsat-7 Enhanced Thematic Mapper Plus (ETM+), and Landsat-8 Operational Land Imager (OLI) satellite data can be used to detect and map hydrothermally altered minerals in the Malanjkhand copper ...
Subhanil Guha, Himanshu Govil, Gaurav Mishra, Rohit Kumar Giri   +3 more
doaj   +1 more source

Utilização de imagens TM/LANDSAT-5 como ferramenta no mapeamento de solos Utilization of TM/LANDSAT-5 images as a tool in soil surveys

Revista Brasileira de Engenharia Agrícola e Ambiental, 2001
Imagens orbitais TM/LANDSAT-5 foram tratadas por técnicas de processamento digital, com o objetivo de se testar a viabilidade da utilização desta técnica em mapeamento de solos.
Zuleide M. C. Lima, Mateus R. Ribeiro, Alexandre T. de O. Lima   +2 more
doaj   +1 more source

LANDSAT 4 and 5: Emergency [PDF]

The primary purpose of LANDSAT is to study Earth resources. Each satellite contains a Thematic Mapper (TM) and a Multispectral Scanner (MSS) imaging device plus mission unique hardware.
Gonzales, L., Webb, W.
core   +1 more source

Using phenology to improve invasive plant detection in fine‐scale hyperspectral drone‐based images

Remote Sensing in Ecology and Conservation, EarlyView.
Using drone‐based hyperspectral images of mixed temperate successional forests collected over a growing season, detection algorithms were produced for three invasive species of interest, which are not only invasive in Virginia but also much of the U.S.: Ailanthus altissima (tree of heaven), Elaeagnus umbellata (autumn olive), and Rhamnus davurica ...
Kelsey S. Huelsman, Howard E. Epstein, Xi Yang, Roderick Walker   +3 more
wiley   +1 more source

An algorithm for automating the registration of USDA segment ground data to LANDSAT MSS data [PDF]

The algorithm is referred to as the Automatic Segment Matching Algorithm (ASMA). The ASMA uses control points or the annotation record of a P-format LANDSAT compter compatible tape as the initial registration to relate latitude and longitude to LANDSAT ...
Graham, M. H.
core   +1 more source

Evaluating land–sea linkages using land cover change and coral reef monitoring data: A case study from northeastern Puerto Rico

Remote Sensing in Ecology and Conservation, EarlyView.
Land cover change that leads to increased nutrient and sediment runoff is an important driver of change in coral reef ecosystems. In this study, we combined satellite remote sensing and field monitoring to assess concomitant changes in watershed land cover and coral cover in northeastern Puerto Rico in 2000–2015.
Pirta Palola, Sasha Hills, Simon J. Pittman, Edwin A. Hernández‐Delgado, Antoine Collin, Lisa M. Wedding   +5 more
wiley   +1 more source

Assessing Long Term Stability of Landsat 5 TM, Landsat 7 ETM+ and Landsat 8 OLI

, 2017
The radiometric calibration stability of Landsat 5 (L5) Thematic Mapper (TM), Landsat 7 (L7) Enhanced Thematic Mapper Plus (ETM+) and Landsat 8 (L8) Operation Land Imager (OLI) is continuously monitored, trended, and updated using various on-board and vicarious calibration techniques. The on-board calibrators in L5 TM and L7 ETM+ were deemed unreliable
Micijevic, Esad, Mishra, Nischal, Helder, Dennis   +2 more
openaire   +1 more source