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Discharge in the tidal zone of ice-covered rivers has been measured using the conventional\ndischarge measurement method for ice-freerivers, even though the accuracy of such measurements is\nquestionable. Toward achieving an improved discharge measurement method for ice-covered rivers, it\nis necessary to clarify the hydraulic phenomena in the ice-covered tidal zone. Our field observation in\nthe tidal zones of two ice-covered rivers revealed two main findings: \uff11\uff09Observations at the Tokoro\nRiver revealed that it might be possible to apply a discharge estimation equation for the tidal zone of\nan ice-free river(Sato,Nakatsugawa)to an ice-covered river. The discharge estimation equation for the\ntidal zone of an ice-covered river employed a different value for the coefficient. \uff12\uff09In using an ADCP\nto measure the average discharge within a cross-section of a river channel with unsteady flow,\nprolonging the measurement duration did not improve measurement accuracy. The measured values\nshowed little difference according to the measurement duration. We concluded from field survey at the\nTeshio River that 10-second measurement is sufficient for measuring discharge in the ice-covered tidal\nzone.", "subitem_description_type": "Abstract"}]}, "item_5_publisher_32": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "\u56fd\u7acb\u7814\u7a76\u958b\u767a\u6cd5\u4eba \u571f\u6728\u7814\u7a76\u6240 \u5bd2\u5730\u571f\u6728\u7814\u7a76\u6240"}]}, "item_5_select_15": {"attribute_name": "\u8457\u8005\u7248\u30d5\u30e9\u30b0", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_5_subject_16": {"attribute_name": "\u65e5\u672c\u5341\u9032\u5206\u985e\u6cd5", "attribute_value_mlt": [{"subitem_subject": "517", "subitem_subject_scheme": "NDC"}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "\u5409\u5ddd, \u6cf0\u5f18"}], "nameIdentifiers": [{"nameIdentifier": "40288", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "\u6e21\u908a, \u5eb7\u7384"}], "nameIdentifiers": [{"nameIdentifier": "44829", "nameIdentifierScheme": "WEKO"}, {"nameIdentifier": "1000000344424 ", "nameIdentifierScheme": "NRID", "nameIdentifierURI": "http://rns.nii.ac.jp/d/nr/1000000344424 "}]}, {"creatorNames": [{"creatorName": "YOSHIKAWA, Yasuhiro", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "40290", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "WATANABE, Yasuharu", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "40291", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2016-11-22"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "2006-11_\u7d50\u6c37\u6642\u306e\u611f\u6f6e\u57df\u306b\u304a\u3051\u308bADCP\u3092\u7528\u3044\u305f\u6d41\u91cf\u89b3\u6e2c\u624b\u6cd5.pdf", "filesize": [{"value": "1.9 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 1900000.0, "url": {"label": "2006-11_\u7d50\u6c37\u6642\u306e\u611f\u6f6e\u57df\u306b\u304a\u3051\u308bADCP\u3092\u7528\u3044\u305f\u6d41\u91cf\u89b3\u6e2c\u624b\u6cd5.pdf", "url": "https://kitami-it.repo.nii.ac.jp/record/7823/files/2006-11_\u7d50\u6c37\u6642\u306e\u611f\u6f6e\u57df\u306b\u304a\u3051\u308bADCP\u3092\u7528\u3044\u305f\u6d41\u91cf\u89b3\u6e2c\u624b\u6cd5.pdf"}, "version_id": "d7799cec-aef0-4aef-8485-c0c8b629b0b2"}]}, "item_keyword": {"attribute_name": "\u30ad\u30fc\u30ef\u30fc\u30c9", "attribute_value_mlt": [{"subitem_subject": "\u7d50\u6c37\u6cb3\u5ddd", "subitem_subject_scheme": "Other"}, {"subitem_subject": "\u611f\u6f6e\u57df", "subitem_subject_scheme": "Other"}, {"subitem_subject": "\u6d41\u91cf\u89b3\u6e2c", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Ice-Covered River", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Tidal Zone", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Discharge observations", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "jpn"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "conference paper", "resourceuri": "http://purl.org/coar/resource_type/c_5794"}]}, "item_title": "\u7d50\u6c37\u6642\u306e\u611f\u6f6e\u57df\u306b\u304a\u3051\u308bADCP \u3092\u7528\u3044\u305f\u6d41\u91cf\u89b3\u6e2c\u624b\u6cd5", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "\u7d50\u6c37\u6642\u306e\u611f\u6f6e\u57df\u306b\u304a\u3051\u308bADCP \u3092\u7528\u3044\u305f\u6d41\u91cf\u89b3\u6e2c\u624b\u6cd5"}]}, "item_type_id": "5", "owner": "1", "path": ["9"], "permalink_uri": "https://kitami-it.repo.nii.ac.jp/records/7823", "pubdate": {"attribute_name": "\u516c\u958b\u65e5", "attribute_value": "2015-06-15"}, "publish_date": "2015-06-15", "publish_status": "0", "recid": "7823", "relation": {}, "relation_version_is_last": true, "title": ["\u7d50\u6c37\u6642\u306e\u611f\u6f6e\u57df\u306b\u304a\u3051\u308bADCP \u3092\u7528\u3044\u305f\u6d41\u91cf\u89b3\u6e2c\u624b\u6cd5"], "weko_shared_id": 3}