Historical Imagery for Gwynns Falls, 1938 Index

Index for the 1957series of panchromatic aerial photo Gwynns Falls Watershed. This index is part of a series that includes historical aerial photos of the Gwynns Falls Watershed for 1938, 1957, and 1971. There are 23 images for 1938, 20 images for 1957, and 22 images for 1971. This is part of a collection of 221 Baltimore Ecosystem Study metadata records that point to a geodatabase. The geodatabase is available online and is considerably large. Upon request, and under certain arrangements, it can be shipped on media, such as a usb hard drive. The geodatabase is roughly 51.4 Gb in size, consisting of 4,914 files in 160 folders. Although this metadata record and the others like it are not rich with attributes, it is nonetheless made available because the data that it represents could be indeed useful. This is part of a collection of 221 Baltimore Ecosystem Study metadata records that point to a geodatabase. The geodatabase is available online and is considerably large. Upon request, and under certain arrangements, it can be shipped on media, such as a usb hard drive. The geodatabase is roughly 51.4 Gb in size, consisting of 4,914 files in 160 folders. Although this metadata record and the others like it are not rich with attributes, it is nonetheless made available because the data that it represents could be indeed useful.本数据集为1957年系列全色航空照片（panchromatic aerial photo）的格温斯福尔斯流域（Gwynns Falls Watershed）索引。该索引隶属于一套涵盖1938年、1957年及1971年格温斯福尔斯流域历史航空照片的资料系列。其中1938年组包含23幅影像，1957年组含20幅影像，1971年组则有22幅影像。本数据集属于包含221条巴尔的摩生态系统研究（Baltimore Ecosystem Study）元数据记录的集合之一，这些记录均指向一个地理数据库（geodatabase）。该地理数据库可通过在线途径获取，体量较大。经申请并达成特定协议后，可通过USB硬盘等介质寄送该数据库。该地理数据库大小约为51.4吉字节（Gb），包含160个文件夹下的4914个文件。尽管此类元数据记录的属性信息并不丰富，但鉴于其所指代的数据具备实际应用价值，故仍予以公开。