{
    "created": "2024-09-25 12:16:25",
    "updated": "2026-05-09 12:46:55",
    "id": "741aa43f-2603-467c-bd97-f7dd9c350db4",
    "version": 6,
    "ds_topic": null,
    "title_cn": "2000年咸海湖盆30米DSM地形数据",
    "title_en": "",
    "ds_abstract": "<p>本数据是2000年咸海湖盆DSM地形数据，是由SRTM数据和20世纪60年代咸海1:500000地形图合成得到，空间分辨率30米，平面基准采用WGS84大地坐标系，高程基准基于EGM96地球重力模型。</p>",
    "ds_source": "<p>SRTM数据(https://earthexplorer.usgs.gov/)和20世纪60年代咸海1:500000地形图。</p>",
    "ds_process_way": "<p>将1:500000地形图重新投影到WGS84北基准面上的UTM 40区上。基于克里金法，采用球面半变异函数建模并通过双线性插值，生成30 m空间分辨率的湖区栅格数字高程A，再以40m-60m区域高程与SRTM数据集比较，求解出此区域的两套数据集高程相对偏差，以此偏差湖区栅格数字高程A修订40m以下高程，再将此两套数据集融合。</p>",
    "ds_quality": "<p>原数据空间分辨率为30m，加工后空间分辨率为30m，统计水位-面积-体积曲线与文献报道数值R2达到0.99。</p>",
    "ds_acq_start_time": "2000-02-11 00:00:00",
    "ds_acq_end_time": "2000-02-22 00:00:00",
    "ds_acq_place": "咸海",
    "ds_acq_lon_east": null,
    "ds_acq_lat_south": null,
    "ds_acq_lon_west": null,
    "ds_acq_lat_north": null,
    "ds_acq_alt_low": null,
    "ds_acq_alt_high": null,
    "ds_share_type": "离线申请",
    "ds_total_size": 26686118730,
    "ds_files_count": 1,
    "ds_format": "栅格数据",
    "ds_space_res": "30",
    "ds_time_res": "无",
    "ds_coordinate": "WGS84",
    "ds_projection": "WGS84",
    "ds_thumbnail": "741aa43f-2603-467c-bd97-f7dd9c350db4.png",
    "ds_thumb_from": 2,
    "ds_ref_way": "",
    "paper_ref_way": "",
    "ds_ref_instruction": "",
    "ds_from_station": null,
    "organization_id": "a5877b42-96ea-4f13-af7e-246f355413d6",
    "doi_value": "",
    "subject_codes": [
        "170.45"
    ],
    "quality_level": 1,
    "publish_time": "2025-03-26 09:37:54",
    "first_publish_time": null,
    "last_updated": "2025-03-26 09:37:54",
    "protected": false,
    "protected_to": null,
    "lang": "zh",
    "cstr": "33110.11.ariddc.00128",
    "license": null,
    "extra": null,
    "files_shape": [
        {
            "name": "2000年咸海湖盆30米DSM地形数据.rar",
            "size": 26686118730,
            "is_dir": false
        }
    ],
    "features": null,
    "data_level": 0,
    "ds_topic_tags": [
        "DSM",
        "数字地表模型",
        "湖盆地形"
    ],
    "ds_subject_tags": [
        "地理学"
    ],
    "ds_class_tags": [],
    "ds_locus_tags": [
        "咸海"
    ],
    "ds_time_tags": [
        2000
    ],
    "ds_contributors": [
        "刘铁",
        "罗毅",
        "孙林"
    ],
    "ds_meta_authors": [
        "孙林"
    ],
    "ds_managers": [
        "刘铁"
    ],
    "category": "DEM数字高程"
}