Geospatial Analysis of the Non-Surveyed (Estimated) Coastlines in Inoh’s Map, 1821

The history of modern maps in Japan began with Inoh’s map that was made by surveying the whole of Japan on foot 200 years ago. Inoh’s team investigated coastlines, major roads, and geographical features such as rivers, lakes, temples, forts, village names, etc. The survey was successively conducted...

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Main Authors: Yuki Iwai, Yuji Murayama
Format: Article
Language:English
Published: MDPI AG 2021-08-01
Series:ISPRS International Journal of Geo-Information
Subjects:
Online Access:https://www.mdpi.com/2220-9964/10/9/580
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author Yuki Iwai
Yuji Murayama
author_facet Yuki Iwai
Yuji Murayama
author_sort Yuki Iwai
collection DOAJ
description The history of modern maps in Japan began with Inoh’s map that was made by surveying the whole of Japan on foot 200 years ago. Inoh’s team investigated coastlines, major roads, and geographical features such as rivers, lakes, temples, forts, village names, etc. The survey was successively conducted ten times from 1800 to 1816. Inoh’s map is known as the first scientific map in Japan using a systematic method. However, the actual survey was conducted only for 75% of the coastlines in Japan and the remaining 25% was drawn by Inoh’s estimation (observation). This study investigated how the non-surveyed (estimated) coastlines were distributed in the map and why the actual survey was not conducted in these non-surveyed coastlines. Using GIS, we overlaid the geometrically corrected Inoh’s map (Digital Inoh’s Map Professional Edition) with the current map published by the Geospatial Information Authority (GSI) of Japan for examining the spatial difference. We found that the non-surveyed coastlines were in places where the practice of actual surveying was topographically difficult because of the limited surveying technology of those days. The analytical result shows that 38.6% of the non-surveyed coastlines were cliffs, 25.7% were rocky beaches, and 6.2% were wetlands and tidal lands (including rice fields and tidal flats).
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spelling doaj.art-4f6356bf16e746a797b259b93ec8b4982023-11-22T13:24:40ZengMDPI AGISPRS International Journal of Geo-Information2220-99642021-08-0110958010.3390/ijgi10090580Geospatial Analysis of the Non-Surveyed (Estimated) Coastlines in Inoh’s Map, 1821Yuki Iwai0Yuji Murayama1Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, JapanFaculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, JapanThe history of modern maps in Japan began with Inoh’s map that was made by surveying the whole of Japan on foot 200 years ago. Inoh’s team investigated coastlines, major roads, and geographical features such as rivers, lakes, temples, forts, village names, etc. The survey was successively conducted ten times from 1800 to 1816. Inoh’s map is known as the first scientific map in Japan using a systematic method. However, the actual survey was conducted only for 75% of the coastlines in Japan and the remaining 25% was drawn by Inoh’s estimation (observation). This study investigated how the non-surveyed (estimated) coastlines were distributed in the map and why the actual survey was not conducted in these non-surveyed coastlines. Using GIS, we overlaid the geometrically corrected Inoh’s map (Digital Inoh’s Map Professional Edition) with the current map published by the Geospatial Information Authority (GSI) of Japan for examining the spatial difference. We found that the non-surveyed coastlines were in places where the practice of actual surveying was topographically difficult because of the limited surveying technology of those days. The analytical result shows that 38.6% of the non-surveyed coastlines were cliffs, 25.7% were rocky beaches, and 6.2% were wetlands and tidal lands (including rice fields and tidal flats).https://www.mdpi.com/2220-9964/10/9/580Inoh’s maphistorical mapscoastlinesterrainland usehistorical GIS
spellingShingle Yuki Iwai
Yuji Murayama
Geospatial Analysis of the Non-Surveyed (Estimated) Coastlines in Inoh’s Map, 1821
ISPRS International Journal of Geo-Information
Inoh’s map
historical maps
coastlines
terrain
land use
historical GIS
title Geospatial Analysis of the Non-Surveyed (Estimated) Coastlines in Inoh’s Map, 1821
title_full Geospatial Analysis of the Non-Surveyed (Estimated) Coastlines in Inoh’s Map, 1821
title_fullStr Geospatial Analysis of the Non-Surveyed (Estimated) Coastlines in Inoh’s Map, 1821
title_full_unstemmed Geospatial Analysis of the Non-Surveyed (Estimated) Coastlines in Inoh’s Map, 1821
title_short Geospatial Analysis of the Non-Surveyed (Estimated) Coastlines in Inoh’s Map, 1821
title_sort geospatial analysis of the non surveyed estimated coastlines in inoh s map 1821
topic Inoh’s map
historical maps
coastlines
terrain
land use
historical GIS
url https://www.mdpi.com/2220-9964/10/9/580
work_keys_str_mv AT yukiiwai geospatialanalysisofthenonsurveyedestimatedcoastlinesininohsmap1821
AT yujimurayama geospatialanalysisofthenonsurveyedestimatedcoastlinesininohsmap1821