Technical Methodology for ASTER Global Water Body Data Base
A waterbody detection technique is an essential part of a digital elevation model (DEM) generation to delineate land⁻water boundaries and set flattened elevations. This paper describes the technical methodology for improving the initial tile-based waterbody data that are created during production of...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2018
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs10121860 https://doaj.org/article/eb4d5078e09c4375a8ff84a9c385d078 |
id |
ftdoajarticles:oai:doaj.org/article:eb4d5078e09c4375a8ff84a9c385d078 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:eb4d5078e09c4375a8ff84a9c385d078 2023-05-15T18:18:05+02:00 Technical Methodology for ASTER Global Water Body Data Base Hiroyuki Fujisada Minoru Urai Akira Iwasaki 2018-11-01T00:00:00Z https://doi.org/10.3390/rs10121860 https://doaj.org/article/eb4d5078e09c4375a8ff84a9c385d078 EN eng MDPI AG https://www.mdpi.com/2072-4292/10/12/1860 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs10121860 https://doaj.org/article/eb4d5078e09c4375a8ff84a9c385d078 Remote Sensing, Vol 10, Iss 12, p 1860 (2018) ASTER instrument stereo digital elevation model global database optical sensor water body detection Science Q article 2018 ftdoajarticles https://doi.org/10.3390/rs10121860 2022-12-31T10:54:28Z A waterbody detection technique is an essential part of a digital elevation model (DEM) generation to delineate land⁻water boundaries and set flattened elevations. This paper describes the technical methodology for improving the initial tile-based waterbody data that are created during production of the Advanced Spaceborne Thermal Emission and Reflection radiometer (ASTER) GDEM, because without improvement such tile-based waterbodies data are not suitable for incorporating into the new ASTER GDEM Version 3. Waterbodies are classified into three categories: sea, lake, and river. For sea-waterbodies, the effect of sea ice is removed to better delineate sea shorelines in high latitude areas: sea ice prevents accurate delineation of sea shorelines. For lake-waterbodies, the major part of the processing is to set the unique elevation value for each lake using a mosaic image that covers the entire lake area. Rivers present a unique challenge, because their elevations gradually step down from upstream to downstream. Initially, visual inspection is required to separate rivers from lakes. A stepwise elevation assignment, with a step of one meter, is carried out by manual or automated methods, depending on the situation. The ASTER global water database (GWBD) product consists of a global set of 1° latitude-by-1° longitude tiles containing water body attribute and elevation data files in geographic latitude and longitude coordinates and with one arc second posting. Each tile contains 3601-by-3601 data points. All improved waterbody elevation data are incorporated into the ASTER GDEM to reflect the improved results. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Remote Sensing 10 12 1860 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ASTER instrument stereo digital elevation model global database optical sensor water body detection Science Q |
spellingShingle |
ASTER instrument stereo digital elevation model global database optical sensor water body detection Science Q Hiroyuki Fujisada Minoru Urai Akira Iwasaki Technical Methodology for ASTER Global Water Body Data Base |
topic_facet |
ASTER instrument stereo digital elevation model global database optical sensor water body detection Science Q |
description |
A waterbody detection technique is an essential part of a digital elevation model (DEM) generation to delineate land⁻water boundaries and set flattened elevations. This paper describes the technical methodology for improving the initial tile-based waterbody data that are created during production of the Advanced Spaceborne Thermal Emission and Reflection radiometer (ASTER) GDEM, because without improvement such tile-based waterbodies data are not suitable for incorporating into the new ASTER GDEM Version 3. Waterbodies are classified into three categories: sea, lake, and river. For sea-waterbodies, the effect of sea ice is removed to better delineate sea shorelines in high latitude areas: sea ice prevents accurate delineation of sea shorelines. For lake-waterbodies, the major part of the processing is to set the unique elevation value for each lake using a mosaic image that covers the entire lake area. Rivers present a unique challenge, because their elevations gradually step down from upstream to downstream. Initially, visual inspection is required to separate rivers from lakes. A stepwise elevation assignment, with a step of one meter, is carried out by manual or automated methods, depending on the situation. The ASTER global water database (GWBD) product consists of a global set of 1° latitude-by-1° longitude tiles containing water body attribute and elevation data files in geographic latitude and longitude coordinates and with one arc second posting. Each tile contains 3601-by-3601 data points. All improved waterbody elevation data are incorporated into the ASTER GDEM to reflect the improved results. |
format |
Article in Journal/Newspaper |
author |
Hiroyuki Fujisada Minoru Urai Akira Iwasaki |
author_facet |
Hiroyuki Fujisada Minoru Urai Akira Iwasaki |
author_sort |
Hiroyuki Fujisada |
title |
Technical Methodology for ASTER Global Water Body Data Base |
title_short |
Technical Methodology for ASTER Global Water Body Data Base |
title_full |
Technical Methodology for ASTER Global Water Body Data Base |
title_fullStr |
Technical Methodology for ASTER Global Water Body Data Base |
title_full_unstemmed |
Technical Methodology for ASTER Global Water Body Data Base |
title_sort |
technical methodology for aster global water body data base |
publisher |
MDPI AG |
publishDate |
2018 |
url |
https://doi.org/10.3390/rs10121860 https://doaj.org/article/eb4d5078e09c4375a8ff84a9c385d078 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Remote Sensing, Vol 10, Iss 12, p 1860 (2018) |
op_relation |
https://www.mdpi.com/2072-4292/10/12/1860 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs10121860 https://doaj.org/article/eb4d5078e09c4375a8ff84a9c385d078 |
op_doi |
https://doi.org/10.3390/rs10121860 |
container_title |
Remote Sensing |
container_volume |
10 |
container_issue |
12 |
container_start_page |
1860 |
_version_ |
1766194315962351616 |