IML Critical Zone Observatory, Clear Creek Aug 2014 Lidar Survey (532 nm)

This dataset was collected using the Optech Aquarius ALTM, a hybrid laser mapping system which collects simultaneous land and shallow water-depth measurements using a beam wavelength of 532 nm. <br><br>This dataset was collected by NCALM for PI Dr. Praveen Kumar, University of Illinois. Clear Creek is part of the Intensively Managed Landscapes (ILM) Critical Zone Observatory (CZO). <br><br> The requested survey area consisted of two rectangles - called East and West - enclosing approximately 204 square kilometers along with their associated watercourse corridors. The West rectangle is located 35 km NW of Iowa City, Iowa and the East rectangle is located 10 km NW of the same city. <br><br>This survey was performed with 2 different LiDAR systems: 1) Optech Gemini Airborne Laser Terrain Mapper (ALTM) (available <a href="http://opentopo.sdsc.edu/lidarDataset?opentopoID=OTLAS.122016.26915.1">here</a>) which is an infrared laser mapping sensor and 2) Optech Aquarius ALTM (this dataset) which is a hybrid laser mapping system as it collects simultaneous land and shallow water-depth measurements. It operates in the green spectrum, thus enabling it to penetrate water. These LiDAR mapping systems along with an Optech 12-bit full waveform digitizer were mounted consecutively in a twin-engine Piper PA- 31-350 Navajo Chieftain (Tail Number N154WW). <br><br>Full waveform files are available via <a href="https://cloud.sdsc.edu/v1/AUTH_opentopography/PC_Bulk/IA14_Kumar_Waveform/">this link</a>.<p><br>Publications associated with this dataset can be found at <a href="http://calm.geo.berkeley.edu/ncalm/dtc.html" target="_blank">NCALM's Data Tracking Center</a></p>

本数据集采用Optech Aquarius ALTM混合激光测距系统采集而成，该系统通过532纳米波长的光束同时收集陆地和浅水深度测量数据。该数据集由NCALM（北加州激光测距与成像中心）为伊利诺伊大学PI（项目负责人）普拉文·库马尔博士收集。清晰溪流是密集管理景观（ILM）关键地带观测站（CZO）的一部分。所需调查区域由两个矩形组成，分别称为东部和西部，总面积约为204平方公里，包括其相关水道。西部矩形位于爱荷华州爱荷华城西北方向35公里处，而东部矩形位于该城市西北方向10公里处。本次调查采用两种不同的LiDAR系统进行：1）Optech Gemini机载激光地形测绘仪（ALTM），一种红外激光测绘传感器（可在此链接中找到：<a href="http://opentopo.sdsc.edu/lidarDataset?opentopoID=OTLAS.122016.26915.1">http://opentopo.sdsc.edu/lidarDataset?opentopoID=OTLAS.122016.26915.1</a>）；2）Optech Aquarius ALTM（本数据集），这是一种混合激光测距系统，因为它能够同时收集陆地和浅水深度测量数据。该系统在绿色光谱范围内运行，因此能够穿透水体。这些LiDAR测绘系统与Optech 12位全波形数字化器依次安装在一架双引擎皮帕尔PA-31-350纳瓦霍酋长号（飞机尾号N154WW）上。全波形文件可通过以下链接获取：<a href="https://cloud.sdsc.edu/v1/AUTH_opentopography/PC_Bulk/IA14_Kumar_Waveform/">https://cloud.sdsc.edu/v1/AUTH_opentopography/PC_Bulk/IA14_Kumar_Waveform/</a>。与该数据集相关的出版物可在NCALM数据追踪中心找到，链接为：<a href="http://calm.geo.berkeley.edu/ncalm/dtc.html" target="_blank">http://calm.geo.berkeley.edu/ncalm/dtc.html</a>。