• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>OCEANS Conference >MBARI mapping AUV operations: In the Gulf of California
【24h】

MBARI mapping AUV operations: In the Gulf of California

机译：Mbari映射AUV操作：在加利福尼亚州的海湾

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Monterey Bay Aquarium Institute (MBARI) has conducted high-resolution multibeam bathymetry, sidescan, and subbottom sonar surveys in the Gulf of California using an autonomous underwater vehicle (AUV) as part of a three-month, two-ship oceanographic expedition. The seafloor mapping AUV D. Allan B. was operated from R/V Zephyr, achieving 22 successful 17-hour missions during March and April 2012. The 1-m lateral resolution seafloor maps and subbottom profiles were used to guide subsequent ROV Doc Ricketts dives made from MBARI's R/V Western Flyer, which combined visual surveys, sampling, and in situ experimentation by several different science groups. The vehicle is a modularized Dorado Class 54 cm (21 inch) diameter, 5.18 meter (17 feet) length, 733 kg (1616 pounds) air weight. The interior of the AUV floods with water when launched; electronics are contained in either one-atmosphere hermetic housings or in pressure-compensated enclosures. The AUV is ballasted to be about 3.63 kg (8 pounds) positive in seawater. Flotation is accomplished with 6000 meter rated syntactic foam. The D. Allan B. has three mapping sonar systems onboard: a Reson 200 kHz multibeam echosounder, an Edgetech FS-AU Sonar Package which comprises a 100 kHz chirp sidescan, a 410 kHz chirp sidescan, and a 2–16 kHz chirp subbottom profiler. With the onboard Lithium Polymer battery packs, the Mapping AUV has an endurance of approximately 17 hours at a speed of 1.5 meters per second, providing a range of 55 to 85 kilometers. The mapping AUV is equipped with a Kearfott inertial navigation system (INS) with Doppler velocity log, a Paroscientific pressure sensor, and an ultrashort baseline (USBL) and acoustic modem for communications. It also has an Iridium Satellite Short Burst Data modem, a drop weight, radio direction finder, Homer Pro and visible strobe location aids. Propulsion is accomplished with a duct-protected articulated propeller which provides 52 Newtons (12lbf) of thrust at 30- rpm as well as elevator and rudder functions. Turning diameter is less than 20 meters; climb/dive rate is approximately 30 meters per minute. Launches and recoveries were made from the RV Zephyr, a 24m (79 foot) former pilot boat that operates with four crew and four science personnel. The Zephyr is outfitted with a Brook Ocean Technologies J-Frame crane for AUV launch and recovery. Once the AUV is in the water, the mission is sent from a computer on the Zephyr to the AUV over a wireless Freewave Ethernet link. At the start of the mission, the AUV spirals down to the start-of-line while being position-updated with GPS data from the Zephyr aided by the USBL system. A Bottom Pressure Recorder used to provide in situ tide data for bathymetry correction was deployed prior to all AUV missions, and recovered afterwards, using a Benthos Recoverable Transponder mounted to an MBARI-designed frame. The seafloor mapping data were processed using MB-System, an open source software package developed at MBARI and the Lamont-Doherty Earth Observatory. The first half of the mapping AUV surveys focused largely on four transform faults in the central and northern gulf. The combination of high-resolution bathymetry and subbottom profiles enabled the identification of active fault traces and zones of subsurface gas and hydrate. The second half of the Zephyr expedition focused on the Alarcon Rise, a volcanic spreading center. The new surveys provide the first 1-m scale bathymetry coverage of the neovolcanic zone along an entire ocean spreading center segment. The mapping data also identified the locations of several fields of hydrothermal vent chimneys, two of which were confirmed to be currently active by ROV dives.
机译：蒙特雷湾水族馆研究所（Mbari）在加利福尼亚州的海湾（AUV）是三个月的两艘海洋探险的一部分，在加州海湾进行了高分辨率的多博浴池，侧梁和副声坐标调查。 Seafloor Mapping Auv D. Alan B.从r / v Zephyr运营，在3月和2012年4月实现了22个成功的17小时任务。1米的横向分辨率海底地图和子宫概况用于指导随后的Rov Doc Ricketts潜水由Mbari的R / V西方传单制成，通过几种不同的科学群体组合了视觉调查，采样和原位实验。该车辆是模块化DORADO 54级（21英寸）直径，5.18米（17英尺）长，733千克（1616磅）的空气重量。推出时，AUV泛滥的内部;电子器件包含在一个气氛密封外壳或压力补偿外壳中。 AUV在海水中强制镇流量为约3.63千克（8磅）。用6000米额定句法泡沫完成浮选。 D. Allan B.船上有三个映射声纳系统：A EDGETECH FS-AU SONOSOUNDER的RESON 200 KHz Multibeam Echosounder，包括100 khz Chirp Sidescan，410 kHz Chirp Sidescan，以及2-16 kHz Chirp Subbottom Profiler 。通过板载锂聚合物电池组，映射AUV的耐久性约为17小时，速度为每秒1.5米，提供55至85公里的范围。映射AUV配备了Kearfott惯性导航系统（INS），具有多普勒速度对数，帕罗科压传感器和超短基线（USBL）和用于通信的声学调制解调器。它还拥有铱星卫星短突发数据调制解调器，下降重量，无线电方向查找器，荷马席和可见光频率的辅助设备。采用管道保护的铰接式螺旋桨完成推进，其在30-RPM提供52次（12LBF）的推力以及电梯和方向舵功能。车削直径小于20米;爬升/潜水速率约为每分钟30米。推出和回收是由RV Zephyr制造的，24米（79英尺）的前飞行员，与四名机组和四名科学人员一起运营。 Zephyr配备了Brook Ocean Technologies J框架起重机，用于AUV发射和恢复。一旦AUV在水中，任务就会通过无线储备以太网链路从Zephyr上的计算机上的计算机发送到AUV。在使命开始时，AUV螺旋向前到线路，同时使用USBL系统的来自Zephyr帮助的GPS数据进行定位。在所有AUV任务之前部署了用于提供用于沐浴校正的底部压力录像机的底部压力记录器，然后使用安装在Mbari设计框架的Benthos可恢复的应答器之后恢复。使用MB-System处理海底映射数据，该数据是在Mbari和Lamont-Doherty地球天文台开发的开源软件包。映射的前半部分AUV调查主要集中在中央和北湾的四个变换故障。高分辨率沐浴和副谱的组合使识别有源故障痕迹和地下气和水合物的区域。 Zephyr探险的下半部分专注于Alarcon崛起，是火山蔓延中心。新调查提供了沿着整个海洋扩展中心段的新含新硅兰区的前1米级宽度覆盖。映射数据还确定了水热通气烟囱的几个领域的位置，其中两种是通过ROV潜水目前活性的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号