{"id":4183,"date":"2026-10-02T09:59:53","date_gmt":"2026-10-02T00:59:53","guid":{"rendered":"https:\/\/y42u.net\/tec001\/2026\/10\/02\/coastline-length-measurement-field\/"},"modified":"2026-10-02T09:59:53","modified_gmt":"2026-10-02T00:59:53","slug":"coastline-length-measurement-field","status":"publish","type":"post","link":"https:\/\/y42u.net\/tec001\/2026\/10\/02\/coastline-length-measurement-field\/","title":{"rendered":"\u65e5\u672c\u306e\u6d77\u5cb8\u7dda\u306f\u4f55\u30ad\u30ed\uff1f \u2014 32,170km\u3068\u7d0435,000km\u3001\u540c\u3058\u6d77\u5cb8\u7dda\u3067\u7b54\u3048\u304c2\u3064\u3042\u308b\u7406\u7531"},"content":{"rendered":"<style>img.autopost-single-image{width:30%;max-width:100%;height:auto;display:block;}@media (max-width: 768px){img.autopost-single-image{width:50%;}}<\/style>\n<p><img decoding=\"async\" style=\"width:80%;max-width:100%;height:auto;display:block;margin:0 auto;\" src=\"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/10\/gde-coastline-length-measurement-field.jpeg\" alt=\"\u65e5\u672c\u306e\u6d77\u5cb8\u7dda\u306f\u4f55\u30ad\u30ed\uff1f \u2014 32,170km\u3068\u7d0435,000km\u3001\u540c\u3058\u6d77\u5cb8\u7dda\u3067\u7b54\u3048\u304c2\u3064\u3042\u308b\u7406\u7531\"><\/p>\n<h1 id=\"32170km35000km2\">\u65e5\u672c\u306e\u6d77\u5cb8\u7dda\u306f\u4f55\u30ad\u30ed\uff1f \u2014 32,170km\u3068\u7d0435,000km\u3001\u540c\u3058\u6d77\u5cb8\u7dda\u3067\u7b54\u3048\u304c2\u3064\u3042\u308b\u7406\u7531<\/h1>\n<p><strong>\u74b0\u5883\u7701\u306e\u8abf\u67fb\u3067\u306f32,170.21km\u3001\u56fd\u571f\u4ea4\u901a\u7701\u306e\u8cc7\u6599\u3067\u306f\u7d0435,000km\u3067\u3059\u3002\u3069\u3061\u3089\u3082\u9593\u9055\u3044\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong> \u300c\u3069\u3053\u307e\u3067\u3092\u6d77\u5cb8\u3068\u3059\u308b\u304b\u300d\u306e\u5b9a\u7fa9\u3068\u3001\u300c\u3069\u308c\u304f\u3089\u3044\u7d30\u304b\u3044\u5730\u56f3\u3067\u6e2c\u308b\u304b\u300d\u306e\u7e2e\u5c3a\u304c\u9055\u3046\u304b\u3089\u3067\u3059\u3002\u6e2c\u91cf\u3092\u3057\u3066\u3044\u308b\u4eba\u306b\u306f\u99b4\u67d3\u307f\u306e\u3042\u308b\u8a71\u3067\u3059\u304c\u3001\u9577\u3055\u3068\u3044\u3046\u306e\u306f\u5bfe\u8c61\u3060\u3051\u3067\u306f\u6c7a\u307e\u308a\u307e\u305b\u3093\u3002\u5b9a\u7fa9\u3068\u7269\u5dee\u3057\u304c\u6c7a\u307e\u3063\u3066\u521d\u3081\u3066\u6570\u5b57\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"2\">2\u3064\u306e\u6570\u5b57\u306e\u51fa\u3069\u3053\u308d<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u51fa\u3069\u3053\u308d<\/th>\n<th>\u6570\u5b57<\/th>\n<th>\u6761\u4ef6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u74b0\u5883\u7701 \u81ea\u7136\u74b0\u5883\u4fdd\u5168\u57fa\u790e\u8abf\u67fb\uff08\u6d77\u5cb8\u8abf\u67fb\uff09<\/td>\n<td><strong>32,170.21km<\/strong><\/td>\n<td>\u5317\u65b9\u9818\u571f\u3092\u9664\u304f\u30022\u4e075\u5343\u52061\u306e\u6d77\u5cb8\u6539\u5909\u72b6\u6cc1\u56f3\u304b\u3089\u8a08\u6e2c<\/td>\n<\/tr>\n<tr>\n<td>\u56fd\u571f\u4ea4\u901a\u7701\u300c\u6d77\u5cb8\u306e\u7279\u5fb4\u300d<\/td>\n<td><strong>\u7d0435,000km<\/strong><\/td>\n<td>\u51fa\u5178\u306f\u5e73\u621028\u5e74\u5ea6\u7248 \u6d77\u5cb8\u7d71\u8a08\uff082016\u5e743\u670831\u65e5\u73fe\u5728\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5dee\u306f\u7d042,800km\u3002\u5317\u6d77\u9053\u306e\u6d77\u5cb8\u7dda\uff08\u672c\u571f4\u5cf6\u306e\u3046\u3061\u306e\u4e00\u90e8\uff09\u306b\u76f8\u5f53\u3059\u308b\u304f\u3089\u3044\u306e\u91cf\u304c\u3001\u6570\u3048\u65b9\u306e\u9055\u3044\u3067\u51fa\u5165\u308a\u3057\u307e\u3059\u3002<\/p>\n<p>\u74b0\u5883\u7701\u306e\u8abf\u67fb\u306e\u307b\u3046\u306f\u3001\u5185\u8a33\u307e\u3067\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u672c\u571f\uff08\u5317\u6d77\u9053\u30fb\u672c\u5dde\u30fb\u56db\u56fd\u30fb\u4e5d\u5dde\uff09\u2026 <strong>18,668.31km<\/strong>\uff08\u7dcf\u5ef6\u9577\u306e58.03%\uff09<\/li>\n<li>\u672c\u571f\u4ee5\u5916\u306e\u5cf6\u5dbc \u2026 <strong>13,501.90km<\/strong>\uff0841.97%\uff09<\/li>\n<\/ul>\n<p>\u5cf6\u3060\u3051\u30674\u5272\u3092\u5360\u3081\u3066\u3044\u308b\u306e\u304c\u3001\u5cf6\u56fd\u3089\u3057\u3044\u3068\u3053\u308d\u3067\u3059\u3002\u6539\u5909\u72b6\u6cc1\u3067\u5206\u3051\u308b\u3068\u3001\u6f6e\u9593\u5e2f\u304c\u81ea\u7136\u306e\u307e\u307e\u306e\u300c\u81ea\u7136\u6d77\u5cb8\u300d\u304c18,967.17km\uff0858.96%\uff09\u3001\u6f6e\u9593\u5e2f\u306b\u8b77\u5cb8\u30fb\u5824\u9632\u304c\u3042\u308b\u300c\u4eba\u5de5\u6d77\u5cb8\u300d\u304c8,598.95km\uff0826.73%\uff09\u3001\u6f6e\u9593\u5e2f\u306f\u81ea\u7136\u3060\u304c\u5f8c\u80cc\u304c\u4eba\u5de5\u5316\u3057\u305f\u300c\u534a\u81ea\u7136\u6d77\u5cb8\u300d\u304c4,340.36km\uff0813.49%\uff09\u3002\u5408\u8a08\u304c100%\u306b\u306a\u3089\u306a\u3044\u306e\u306f<strong>\u6cb3\u53e3\u90e8\u5206\u3092\u9664\u3044\u3066\u3044\u308b<\/strong>\u305f\u3081\u3067\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"1\">\u7406\u7531\u2460 \u300c\u6d77\u5cb8\u7dda\u300d\u306e\u5b9a\u7fa9\u304c\u9055\u3046<\/h2>\n<p><img decoding=\"async\" style=\"width:80%;max-width:100%;height:auto;display:block;margin:0 auto;\" src=\"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/09\/gde-fig-distance-three-ways.jpeg\" alt=\"\u540c\u30582\u70b9\u3092\u7403\u9762\u306b\u6cbf\u3063\u3066\u30fb\u5f26\u3067\u30fb\u6a19\u9ad8\u5dee\u8fbc\u307f\u3067\u6e2c\u3063\u305f3\u672c\u306e\u7dda\"><\/p>\n<p>\u74b0\u5883\u7701\u306e\u8abf\u67fb\u3067\u3044\u3046\u300c\u6d77\u5cb8\uff08\u6c40\u7dda\uff09\u300d\u306f\u3001<strong>\u524d\u6d5c\u3068\u5f8c\u6d5c\u3092\u5408\u308f\u305b\u305f\u5e2f<\/strong>\u3067\u3059\u3002\u524d\u6d5c\u306f\u6f6e\u306e\u6e80\u3061\u5e72\u3067\u6d77\u4e2d\u306b\u6ca1\u3057\u305f\u308a\u6d77\u9762\u4e0a\u306b\u73fe\u308c\u305f\u308a\u3059\u308b\u6f6e\u9593\u5e2f\u3001\u5f8c\u6d5c\u306f\u9ad8\u6f6e\u6d77\u5cb8\u7dda\u3088\u308a\u9678\u5074\u3067\u6ce2\u3084\u98a8\u304c\u4fb5\u98df\u30fb\u5806\u7a4d\u3092\u7e70\u308a\u8fd4\u3059\u533a\u57df\u3002\u3064\u307e\u308a\u300c\u6f6e\u306e\u5e72\u6e80\u3084\u98a8\u6ce2\u306b\u3088\u3063\u3066\u5f71\u97ff\u3092\u53d7\u3051\u308b\u9678\u5730\u304c\u6d77\u5cb8\u3067\u3042\u308b\u300d\u3068\u3044\u3046\u8003\u3048\u65b9\u306b\u7acb\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8003\u3048\u65b9\u306f\u78ef\u3084\u5d16\u306b\u3082\u62e1\u5f35\u3057\u3066\u9069\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3044\u3063\u307d\u3046\u6d77\u5cb8\u7d71\u8a08\u306f\u3001\u6d77\u5cb8\u4e8b\u696d\u306e\u57fa\u790e\u306b\u306a\u308b\u7d71\u8a08\u3067\u3059\u3002\u4f55\u304c\u6d77\u5cb8\u3068\u3057\u3066\u8a08\u4e0a\u3055\u308c\u308b\u304b\u306f\u3001\u7ba1\u7406\u3084\u4e8b\u696d\u306e\u67a0\u7d44\u307f\u306b\u6cbf\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u56fd\u571f\u5730\u7406\u9662\u306e\u300c\u5168\u56fd\u90fd\u9053\u5e9c\u770c\u5e02\u533a\u753a\u6751\u5225\u9762\u7a4d\u8abf\u300d\u3067\u306f\u3001\u9762\u7a4d\u3092\u6e2c\u308b\u5883\u754c\u3068\u3057\u3066\u306e\u6d77\u5cb8\u7dda\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u3061\u3089\u306f<a href=\"https:\/\/gmp.y42u.net\/2026\/09\/07\/japan-land-area-measurement-learning\/\">\u56fd\u571f\u306e\u9762\u7a4d\u306e\u6e2c\u308a\u65b9<\/a>\u3067\u6271\u3063\u305f\u3068\u304a\u308a\u3001\u6e80\u6f6e\u6642\u306e\u6c34\u969b\u3068\u3044\u3046\u5225\u306e\u6c7a\u3081\u65b9\u3067\u3059\u3002<\/p>\n<p><strong>\u540c\u3058\u300c\u6d77\u5cb8\u7dda\u300d\u3068\u3044\u3046\u8a00\u8449\u3067\u30013\u3064\u306e\u8cc7\u6599\u304c3\u3064\u306e\u7dda\u3092\u6307\u3057\u3066\u3044\u308b<\/strong>\u308f\u3051\u3067\u3059\u3002\u6570\u5b57\u304c\u4e00\u81f4\u3057\u306a\u3044\u306e\u306f\u5f53\u7136\u3067\u3001\u3080\u3057\u308d\u4e00\u81f4\u3057\u3066\u3044\u305f\u3089\u5076\u7136\u3092\u7591\u3046\u3079\u304d\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"2_1\">\u7406\u7531\u2461 \u7d30\u304b\u3044\u5730\u56f3\u3067\u6e2c\u308b\u3068\u9577\u304f\u306a\u308b<\/h2>\n<p>\u3053\u3061\u3089\u306f\u3082\u3063\u3068\u6839\u672c\u7684\u306a\u8a71\u3067\u3059\u3002<strong>\u6d77\u5cb8\u7dda\u306e\u9577\u3055\u306f\u3001\u4f7f\u3046\u7269\u5dee\u3057\u306e\u9577\u3055\u306b\u3088\u3063\u3066\u5909\u308f\u308a\u307e\u3059\u3002<\/strong><\/p>\n<p>\u5165\u308a\u6c5f\u304c\u305f\u304f\u3055\u3093\u3042\u308b\u6d77\u5cb8\u3092\u300110km\u306e\u7269\u5dee\u3057\u3067\u6e2c\u308b\u3068\u3001\u5c0f\u3055\u306a\u5165\u308a\u6c5f\u306f\u98db\u3070\u3055\u308c\u3066\u76f4\u7dda\u3067\u7d50\u3070\u308c\u307e\u3059\u30021km\u306e\u7269\u5dee\u3057\u306a\u3089\u3001\u98db\u3070\u3055\u308c\u3066\u3044\u305f\u5165\u308a\u6c5f\u304c\u62fe\u308f\u308c\u3066\u9577\u3055\u304c\u5897\u3048\u307e\u3059\u3002100m\u306a\u3089\u3082\u3063\u3068\u5897\u3048\u307e\u3059\u3002\u30ea\u30a2\u30b9\u6d77\u5cb8\u306e\u3088\u3046\u306a\u8907\u96d1\u306a\u6d77\u5cb8\u3067\u306f\u3001\u3053\u306e\u5897\u3048\u65b9\u304c\u6b62\u307e\u308a\u307e\u305b\u3093\u3002\u300c\u6d77\u5cb8\u7dda\u306e\u30d1\u30e9\u30c9\u30c3\u30af\u30b9\u300d\u3068\u547c\u3070\u308c\u308b\u73fe\u8c61\u3067\u3059\u3002<\/p>\n<p>\u3060\u304b\u3089<strong>\u300c\u7e2e\u5c3a\u3092\u66f8\u304b\u305a\u306b\u6d77\u5cb8\u7dda\u306e\u9577\u3055\u3092\u8a00\u3063\u3066\u3082\u3001\u60c5\u5831\u3068\u3057\u3066\u9589\u3058\u3066\u3044\u306a\u3044\u300d<\/strong>\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u74b0\u5883\u7701\u306e\u8abf\u67fb\u304c\u300c2\u4e075\u5343\u52061\u306e\u6d77\u5cb8\u6539\u5909\u72b6\u6cc1\u56f3\u306b\u533a\u5206\u3055\u308c\u305f\u8a08\u6e2c\u533a\u9593\u306e\u5ea7\u6a19\u5024\u3092\u30c7\u30b8\u30bf\u30a4\u30b6\u30fc\u3067\u6e2c\u5b9a\u300d\u3068\u8a08\u6e2c\u6761\u4ef6\u307e\u3067\u66f8\u3044\u3066\u3044\u308b\u306e\u306f\u3001\u305d\u306e\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a08\u6e2c\u306f\u4eba\u306e\u624b\u304c\u5165\u308b\u4f5c\u696d\u306a\u306e\u3067\u3001\u3070\u3089\u3064\u304d\u3082\u3042\u308a\u307e\u3059\u3002\u74b0\u5883\u7701\u306e\u8abf\u67fb\u3067\u306f\u3001<strong>1\u56f3\u8449\u4e2d\u306e\u5408\u8a08\u5024\u304c\u5148\u884c\u8abf\u67fb\u306e\u5024\u30682%\u4ee5\u4e0a\u306e\u5dee\u3092\u751f\u3058\u305f\u5834\u5408\u306f\u518d\u6e2c\u3059\u308b<\/strong>\u3068\u3044\u3046\u624b\u9806\u304c\u8a2d\u3051\u3089\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u9006\u306b\u8a00\u3048\u3070\u30012%\u7a0b\u5ea6\u306e\u5dee\u306f\u4f5c\u696d\u306e\u3070\u3089\u3064\u304d\u3068\u3057\u3066\u60f3\u5b9a\u3055\u308c\u3066\u3044\u305f\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u300232,000km\u306e2%\u306f640km\u3002\u5b9a\u7fa9\u306e\u9055\u3044\u3092\u63c3\u3048\u3066\u3082\u306a\u304a\u3001\u3053\u308c\u304f\u3089\u3044\u306e\u5e45\u306f\u6b8b\u308a\u307e\u3059\u3002<\/p>\n<p>\u540c\u3058\u3053\u3068\u306f\u3001\u5730\u56f3\u306e\u30ba\u30fc\u30e0\u30ec\u30d9\u30eb\u3092\u5909\u3048\u308b\u3068\u63cf\u304b\u308c\u308b\u6d77\u5cb8\u7dda\u306e\u5f62\u304c\u5909\u308f\u308b\u306e\u3068\u540c\u6839\u3067\u3059\u3002\u30d9\u30fc\u30b9\u30de\u30c3\u30d7\u306e\u7e2e\u5c3a\u3092\u5909\u3048\u3066\u6d77\u5cb8\u7dda\u306e\u9577\u3055\u3092\u8a08\u7b97\u3057\u76f4\u305b\u3070\u3001\u3084\u306f\u308a\u6570\u5b57\u304c\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"_1\">\u73fe\u5834\u306b\u3069\u3046\u52b9\u304f\u304b<\/h2>\n<p><img decoding=\"async\" style=\"width:80%;max-width:100%;height:auto;display:block;margin:0 auto;\" src=\"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/09\/gde-fig-island-12nm.jpeg\" alt=\"\u5cf6\u3092\u4e2d\u5fc3\u306b12\u6d77\u91cc\u306e\u9818\u6d77\u30ea\u30f3\u30b0\u3068EEZ\u30ea\u30f3\u30b0\u3002\u6d77\u5cb8\u7dda\u304c\u52d5\u304f\u3068\u5e2f\u3054\u3068\u52d5\u304f\"><\/p>\n<p>\u6d77\u5cb8\u7dda\u306f\u3001\u9818\u6d77\u3084EEZ\u3092\u6e2c\u308b\u57fa\u7dda\u306e\u3082\u3068\u306b\u306a\u308b\u7dda\u3067\u3059\u3002\u6d77\u5cb8\u7dda\u304c\u52d5\u3051\u3070\u3001\u305d\u3053\u304b\u3089\u5916\u3078\u5e83\u304c\u308b\u5e2f\u304c\u4e38\u3054\u3068\u52d5\u304d\u307e\u3059\u3002<a href=\"https:\/\/y42u.net\/tec001\/2026\/09\/16\/nishinoshima-area-survey-territorial-sea-field\/\">\u897f\u4e4b\u5cf6\u306e\u9762\u7a4d\u6e2c\u91cf<\/a>\u304c\u6ce8\u76ee\u3055\u308c\u308b\u306e\u306f\u3053\u306e\u7406\u7531\u3067\u3001\u9678\u304c\u5897\u3048\u308b\u3068\u7ba1\u8f44\u6d77\u57df\u304c\u5897\u3048\u308b\u3068\u3044\u3046\u95a2\u4fc2\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u73fe\u5834\u306e\u6e2c\u91cf\u3067\u306f\u3001\u3053\u3046\u8003\u3048\u3066\u304a\u304f\u3068\u8ff7\u3044\u307e\u305b\u3093\u3002<\/p>\n<ol>\n<li><strong>\u300c\u6d77\u5cb8\u7dda\u306e\u9577\u3055\u300d\u306e\u6570\u5b57\u3092\u5f15\u7528\u3059\u308b\u3068\u304d\u306f\u3001\u51fa\u5178\u3068\u7e2e\u5c3a\u3092\u4e00\u7dd2\u306b\u66f8\u304f\u3002<\/strong> \u66f8\u3051\u306a\u3044\u306a\u3089\u3001\u305d\u306e\u6570\u5b57\u306f\u4f7f\u308f\u306a\u3044\u307b\u3046\u304c\u5b89\u5168\u3067\u3059\u3002<\/li>\n<li><strong>\u81ea\u5206\u3067\u8a08\u6e2c\u3059\u308b\u306a\u3089\u3001\u3069\u306e\u56f3\u30fb\u3069\u306e\u30c7\u30fc\u30bf\u304b\u3089\u53d6\u3063\u305f\u304b\u3092\u6b8b\u3059\u3002<\/strong> \u540c\u3058\u533a\u9593\u3092\u5225\u306e\u30c7\u30fc\u30bf\u3067\u6e2c\u308a\u76f4\u3057\u305f\u3068\u304d\u306b\u3001\u5dee\u306e\u539f\u56e0\u3092\u5207\u308a\u5206\u3051\u3089\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u300c\u6d77\u5cb8\u7dda\u300d\u306e\u5b9a\u7fa9\u3092\u767a\u6ce8\u8005\u3068\u63c3\u3048\u308b\u3002<\/strong> \u6e80\u6f6e\u6642\u306e\u6c34\u969b\u304b\u3001\u6f6e\u9593\u5e2f\u3092\u542b\u3080\u5e2f\u304b\u3001\u8b77\u5cb8\u306e\u5929\u7aef\u304b\u3002\u3053\u3053\u304c\u63c3\u3063\u3066\u3044\u306a\u3044\u3068\u3001\u6210\u679c\u306e\u6570\u5b57\u304c\u5408\u308f\u306a\u3044\u7406\u7531\u304c\u6700\u5f8c\u307e\u3067\u5206\u304b\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ol>\n<p>\u3061\u306a\u307f\u306b\u74b0\u5883\u7701\u306e\u5831\u544a\u66f8\u306f\u300132,170km\u3068\u3044\u3046\u9577\u3055\u3092\u300c<strong>\u5730\u7403\u30924\u5206\u306e3\u5468\u3059\u308b\u307b\u3069<\/strong>\u300d\u3068\u8868\u73fe\u3057\u3066\u3044\u307e\u3059\u3002\u8d64\u9053\u306e\u5168\u5468\u306f\u7d0440,075km\u306a\u306e\u3067\u3001\u305d\u306e8\u5272\u307b\u3069\u3002\u65e5\u672c\u5217\u5cf6\u306e\u9577\u3055\u306f\u304a\u3088\u305d3,000km\u3067\u3059\u304b\u3089\u3001\u6d77\u5cb8\u7dda\u306f\u305d\u306e10\u500d\u3068\u3044\u3046\u8a08\u7b97\u306b\u306a\u308a\u307e\u3059\u3002\u5165\u308a\u6c5f\u3068\u5cf6\u304c\u3001\u305d\u308c\u3060\u3051\u306e\u9577\u3055\u3092\u7a3c\u3044\u3067\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<hr \/>\n<h2 id=\"_2\">\u307e\u3068\u3081<\/h2>\n<ul>\n<li>\u65e5\u672c\u306e\u6d77\u5cb8\u7dda\u306e\u9577\u3055\u306f\u3001\u74b0\u5883\u7701\u306e\u8abf\u67fb\u3067<strong>32,170.21km<\/strong>\uff08\u5317\u65b9\u9818\u571f\u3092\u9664\u304f\uff09\u3001\u56fd\u571f\u4ea4\u901a\u7701\u306e\u8cc7\u6599\u3067<strong>\u7d0435,000km<\/strong>\u3002\u5dee\u306f\u7d042,800km<\/li>\n<li>\u74b0\u5883\u7701\u306e\u5185\u8a33\u306f\u672c\u571f18,668.31km\uff0858.03%\uff09\u3001\u5cf6\u5dbc13,501.90km\uff0841.97%\uff09\u3002\u81ea\u7136\u6d77\u5cb858.96%\u30fb\u4eba\u5de5\u6d77\u5cb826.73%\u30fb\u534a\u81ea\u7136\u6d77\u5cb813.49%\uff08\u6cb3\u53e3\u90e8\u5206\u3092\u9664\u304f\u305f\u3081100%\u306b\u306a\u3089\u306a\u3044\uff09<\/li>\n<li>\u5dee\u304c\u51fa\u308b\u7406\u7531\u2460\u306f<strong>\u5b9a\u7fa9<\/strong>\u3002\u300c\u524d\u6d5c\uff0b\u5f8c\u6d5c\u306e\u5e2f\u300d\u300c\u6d77\u5cb8\u4e8b\u696d\u306e\u7d71\u8a08\u300d\u300c\u9762\u7a4d\u3092\u6e2c\u308b\u5883\u754c\u300d\u3067\u6307\u3057\u3066\u3044\u308b\u7dda\u304c\u9055\u3046<\/li>\n<li>\u5dee\u304c\u51fa\u308b\u7406\u7531\u2461\u306f<strong>\u7e2e\u5c3a<\/strong>\u3002\u7d30\u304b\u3044\u5730\u56f3\u3067\u6e2c\u308b\u307b\u3069\u5165\u308a\u6c5f\u304c\u62fe\u308f\u308c\u3066\u9577\u304f\u306a\u308b\uff08\u6d77\u5cb8\u7dda\u306e\u30d1\u30e9\u30c9\u30c3\u30af\u30b9\uff09\u3002\u74b0\u5883\u7701\u306e\u8a08\u6e2c\u306f2\u4e075\u5343\u52061\u306e\u56f3\u304b\u3089\u30c7\u30b8\u30bf\u30a4\u30b6\u30fc\u3067\u6e2c\u5b9a<\/li>\n<li>\u8a08\u6e2c\u4f5c\u696d\u81ea\u4f53\u306b\u3082\u3070\u3089\u3064\u304d\u304c\u3042\u308a\u3001\u74b0\u5883\u7701\u306e\u8abf\u67fb\u3067\u306f\u5148\u884c\u8abf\u67fb\u3068\u306e\u5dee\u304c<strong>2%\u4ee5\u4e0a\u306a\u3089\u518d\u6e2c<\/strong>\u3068\u3044\u3046\u624b\u9806\u3060\u3063\u305f<\/li>\n<li>\u6d77\u5cb8\u7dda\u306f\u9818\u6d77\u30fbEEZ\u306e\u57fa\u7dda\u306e\u3082\u3068\u306b\u306a\u308b\u7dda\u3067\u3082\u3042\u308b\u3002\u6570\u5b57\u3092\u5f15\u7528\u3059\u308b\u3068\u304d\u306f\u51fa\u5178\u3068\u7e2e\u5c3a\u3092\u5fc5\u305a\u6dfb\u3048\u308b<\/li>\n<\/ul>\n<h3 id=\"_3\">\u51fa\u5178<\/h3>\n<ul>\n<li>\u74b0\u5883\u7701 \u751f\u7269\u591a\u69d8\u6027\u30bb\u30f3\u30bf\u30fc\u300c\u7b2c2\u56de\u81ea\u7136\u74b0\u5883\u4fdd\u5168\u57fa\u790e\u8abf\u67fb 4\uff0e\u6d77\u57df\u306e\u81ea\u7136\u74b0\u5883 4-1 \u6d77\u5cb8\u8abf\u67fb\u300d\uff08\u8abf\u67fb\u65b9\u6cd5\u30fb\u6d77\u5cb8\uff08\u6c40\u7dda\uff09\u306e\u5b9a\u7fa9\u30fb\u7dcf\u5ef6\u957732,170.21km\u30fb\u81ea\u7136\uff0f\u4eba\u5de5\uff0f\u534a\u81ea\u7136\u306e\u5185\u8a33\u30fb\u518d\u6e2c\u57fa\u6e96\uff09 https:\/\/www.biodic.go.jp\/reports\/2-3\/a405.html<\/li>\n<li>\u56fd\u571f\u4ea4\u901a\u7701 \u6c34\u7ba1\u7406\u30fb\u56fd\u571f\u4fdd\u5168\u5c40\u300c\u6d77\u5cb8\u306e\u7279\u5fb4\u300d\uff08\u7dcf\u5ef6\u9577\u7d0435,000km\u3002\u51fa\u5178\uff1a\u5e73\u621028\u5e74\u5ea6\u7248 \u6d77\u5cb8\u7d71\u8a08\uff09 https:\/\/www.mlit.go.jp\/river\/kaigan\/main\/kaigandukuri\/sugata01.html<\/li>\n<li>\u56fd\u571f\u5730\u7406\u9662\u300c\u5168\u56fd\u90fd\u9053\u5e9c\u770c\u5e02\u533a\u753a\u6751\u5225\u9762\u7a4d\u8abf\u300d https:\/\/www.gsi.go.jp\/KOKUJYOHO\/MENCHO-title.htm<\/li>\n<\/ul>\n<blockquote><p>\n\u672c\u8a18\u4e8b\u306e\u6570\u5024\u306f2026\u5e7410\u6708\u6642\u70b9\u3067\u5404\u6a5f\u95a2\u304c\u516c\u8868\u3057\u3066\u3044\u308b\u8cc7\u6599\u306b\u57fa\u3065\u304d\u307e\u3059\u3002\u6d77\u5cb8\u7d71\u8a08\u306f\u5e74\u5ea6\u3054\u3068\u306b\u66f4\u65b0\u3055\u308c\u308b\u305f\u3081\u3001\u6700\u65b0\u5024\u306f\u51fa\u5178\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002\n<\/p><\/blockquote>\n<hr \/>\n<h2 id=\"_4\">\u6b21\u306b\u78ba\u8a8d\u3059\u308b<\/h2>\n<ul>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/09\/16\/nishinoshima-area-survey-territorial-sea-field\/\">\u897f\u4e4b\u5cf6\u306e\u9762\u7a4d\u306f\u3069\u3046\u6e2c\u308b\uff1f<\/a> \u2014 \u6d77\u5cb8\u7dda\u304c\u52d5\u304f\u3068\u9818\u6d77\u3068EEZ\u304c\u3069\u3046\u52d5\u304f\u306e\u304b\u3001\u5b9f\u969b\u306e\u6e2c\u91cf\u306e\u624b\u9806\u304b\u3089\u5206\u304b\u308a\u307e\u3059<\/li>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/09\/28\/longest-straight-road-earth-curvature-field\/\">\u5730\u7403\u4e0a\u3067\u6700\u3082\u9577\u3044\u76f4\u7dda\u9053\u8def\u306f\u3069\u3053\uff1f<\/a> \u2014 \u300c\u9577\u3055\u300d\u304c\u6e2c\u308a\u65b9\u3067\u5909\u308f\u308b\u3082\u30461\u3064\u306e\u4f8b\u3092\u3001\u5730\u7403\u306e\u66f2\u7387\u306e\u5074\u304b\u3089\u78ba\u8a8d\u3067\u304d\u307e\u3059<\/li>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/09\/27\/deepest-lake-bottom-below-sea-level-field\/\">\u6d77\u9762\u3088\u308a\u4f4e\u3044\u6e56\u5e95\u306f\u3069\u3053\u306b\u3042\u308b\uff1f<\/a> \u2014 \u57fa\u6e96\u9762\u306e\u53d6\u308a\u65b9\u3067\u6570\u5b57\u306e\u610f\u5473\u304c\u5909\u308f\u308b\u8a71\u3092\u3001\u6df1\u3055\u306e\u5074\u304b\u3089\u8ffd\u3048\u307e\u3059<\/li>\n<li><a href=\"https:\/\/gmp.y42u.net\/2026\/09\/07\/japan-land-area-measurement-learning\/\">\u56fd\u571f\u306e\u9762\u7a4d\u306f\u3069\u3046\u6e2c\u3063\u3066\u3044\u308b\u306e\u304b\uff08GeoPrism JP\uff09<\/a> \u2014 \u9762\u7a4d\u3092\u6e2c\u308b\u3068\u304d\u306e\u6d77\u5cb8\u7dda\u304c\u3001\u6e80\u6f6e\u6642\u306e\u6c34\u969b\u3068\u3057\u3066\u3069\u3046\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u304b\u304c\u56f3\u3067\u5206\u304b\u308a\u307e\u3059<\/li>\n<li>\u66f8\u7c4d\u3067\u307e\u3068\u3081\u3066\u5b66\u3076: <a href=\"https:\/\/www.amazon.co.jp\/dp\/B0HF4SJC1L\">\u300e\u65e5\u672c\u306e\u6e2c\u5730\u7cfbQ&amp;A\u300f\u7b2c5\u7ae0\u300c\u56fd\u571f\u306e\u306f\u3057\u3068\u57fa\u6e96\u70b9\u300d<\/a>\uff08Kindle Unlimited\u5bfe\u5fdc\uff09<\/li>\n<\/ul>\n<hr \/>\n<blockquote><p>\n<strong>\u958b\u767a\u8005\u3088\u308a<\/strong>: \u30a2\u30d7\u30ea\u30fbKindle\u672c\u30fb\u516c\u958b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u4e00\u89a7\u306f <a href=\"https:\/\/github.com\/amru195704\">GitHub: amru195704<\/a> \u306b\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002\n<\/p><\/blockquote>\n<hr \/>\n<blockquote><p>\n<strong>\u304a\u9858\u3044<\/strong><br \/>\n\u672c\u8a18\u4e8b\u306e\u60c5\u5831\u306f\u53c2\u8003\u76ee\u7684\u3067\u63b2\u8f09\u3057\u3066\u304a\u308a\u3001\u6b63\u78ba\u6027\u30fb\u5b8c\u5168\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8aa4\u8a18\u30fb\u4e0d\u6b63\u78ba\u306a\u60c5\u5831\u304c\u3054\u3056\u3044\u307e\u3057\u305f\u3089\u3001\u30b3\u30e1\u30f3\u30c8\u6b04\u3088\u308a\u3054\u6307\u6458\u3044\u305f\u3060\u3051\u308c\u3070\u3001\u78ba\u8a8d\u306e\u3046\u3048\u4fee\u6b63\u3044\u305f\u3057\u307e\u3059\u3002\n<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u65e5\u672c\u306e\u6d77\u5cb8\u7dda\u306f\u4f55\u30ad\u30ed\uff1f \u2014 32,170km\u3068\u7d0435,000km\u3001\u540c\u3058\u6d77\u5cb8\u7dda\u3067\u7b54\u3048\u304c2\u3064\u3042\u308b\u7406\u7531 \u74b0\u5883\u7701\u306e\u8abf\u67fb\u3067\u306f32,170.21km\u3001\u56fd\u571f\u4ea4\u901a\u7701\u306e\u8cc7\u6599\u3067\u306f\u7d0435,000km\u3067\u3059\u3002\u3069\u3061\u3089\u3082\u9593\u9055\u3044\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u300c\u3069\u3053 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4182,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[17,634,628,633,498,631,630,632,629,552],"class_list":["post-4183","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-geodiveexa","tag-634","tag-628","tag-633","tag-498","tag-631","tag-630","tag-632","tag-629","tag-552"],"veu_head_title_object":{"title":"","add_site_title":""},"jetpack_publicize_connections":[],"jetpack-related-posts":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/10\/gde-coastline-length-measurement-field.jpeg","_links":{"self":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/4183","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/comments?post=4183"}],"version-history":[{"count":0,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/4183\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/media\/4182"}],"wp:attachment":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/media?parent=4183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/categories?post=4183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/tags?post=4183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}