AEON Fine-Scale Acoustic Survey (FSAS) Raw Data

FSAS datasets are shown by the collection site and date measurements were performed; see associated cruise reports for cruise-specific information on how and when these data were collected. Generally, FSAS grids are composed of 4 to 5 line transects, with the survey grid centered on the bottom-lander at the given AEON site. Transducer depth is set to 1 m below the surface, the approximate depth at which the towfish (to which the transducers were mounted) was towed.Each .csv file is the survey data at a single frequency, for all transect lines. The naming convention of each file is as follows, with periods separating each component:<br>Date = start date (2022.01.08)Cruise = ship name (Warren, Beast, etc.)<br>Site = three letter site code (WIB, etc.)FSAS number = Assigned FSAS number per cruise, as listed in cruise log (FSAS1)<br>Freq = three digit frequency (120kHz)<br>Export bin dimensions = 005mvert_100mhorz<br>Each .csv contains the following variables:<br>Process ID = ID number per exportInterval = Cell column<br>Layer = Cell rowS_V_mean = Mean S_V in the cell (dB re 1m^-1)<br>NASC = Nautical area scattering coefficient (m²nmi^-2) for the cellS_V_max = Maximum Sv in the cell (dB re 1m^-1)<br>S_V_min = Minimum Sv in the cell (dB re 1m^-1)S_V_noise = Mean noise Sv in the cell (dB re 1m_-1)<br>Depth_mean = Mean depth of the cell (m)Ping_M = Ping number of middle ping in the cell<br>Dist_M = GPS-measured distance from first ping to middle ping in the cell (m)Date_M = Date of middle ping in the cell (YYYYMMDD)<br>Time_M = Time of middle ping in the cell (UTC)Lat_M = Latitude of middle ping in the cell (decimal degrees)<br>Lon_M = Longitude of middle ping in the cell (decimal degrees)Program_version = Echoview software version number<br>Processing_version = File format version used for analysis (value = 3 since Echoview 1.40)Processing_date = Date on which the data were exported (YYYYMMDD)<br>Processing_time = Time at which the data were exported (EST)Alpha = Absorption coefficient from calibration file (dB/m)<br>Gain_constant = Value of echosounder calibration constant (dB re 1m²/m³)Noise_Sv_1m = Background noise at 1m (dB re 1m²/m³)<br>ABC = Area backscattering coefficient for the cell (m²m^-2)Thickness_mean = Mean extent along the beam axis of cell (m)<br>Frequency = Echosounder frequency value (kHz)<br>This collection represents the data collected from the Acoustic and Environmental Observation Network (AEON) in the U.S. Northwest Atlantic, developed and deployed 2021. The AEON network of five observation nodes complements existing oceanographic monitoring infrastructure in the Gulf of Maine. The observatory network provides simultaneous, long-term monitoring of soundscapes and multiple acoustically-relevant parameters such as marine mammal behavior and prey concentration at key locations where changes in the Labrador and Gulf Stream currents are projected to affect the Gulf of Maine.The lead P.I. for this project is Dr. Jennifer Miksis-Olds, University of New Hampshire (UNH). Dr. Miksis-Olds leads a collaborative research team consisting of individuals from UNH, JASCO Applied Sciences, Stony Brook University, and other associates.Please cite these data as Jennifer Miksis-Olds, AEON PI, University of New Hampshire with funding from U.S. Department of Defense, Office of Naval Research Awards N00014-20-1-2312, N00014-23-12767, N00014-24-12740.Raw data [including detailed metadata] are archived at the NOAA National Centers for Environmental Information :<br>Active Acoustic raw data, https://www.ncei.noaa.gov/maps/water-column-sonar/<br>Passive Acoustic raw data, https://www.ncei.noaa.gov/maps/passive_acoustic_data/<br>The AEON network in the Gulf of Maine totals 5 observation nodes. Datasets are indicated by siteAEON1 NEC, Northeast Channel, CanadaAEON2 ECS, Eastern Coastal Shelf, CanadaAEON3 GEB, Georges Basin, USAEON4 JOB, Jordan Basin, USAEON5 WIB, Wilkinson Basin, USSampling period is reflected as "Deploy date-Recovery date" (e.g., Jan2022-Feb2023 was deployed January 2022 and recovered February 2023).<b>Dataset manifest:</b>Research Cruise 2: Jasco dataset 1: Feb 2021 thru July 2021 (AEON4 JOB, AEON5 WIB)Research Cruise 3: Jasco dataset 2: July 2021 thru Jan 2022 (AEON3 GEB, AEON4 JOB, AEON5 WIB)Research Cruise 4: Jasco dataset 3: Jan 2022 thru Dec 2022 (AEON1 NEC, AEON2 ECS, AEON3 GEB, AEON4 JOB, AEON5 WIB)Research Cruise 5: Jasco dataset 4: Feb 2023 thru Feb 2024 (AEON1 NEC, AEON2 ECS, AEON3 GEB) and Dec 2022 thru Dec 2023 (AEON4 JOB, AEON5 WIB)Research Cruise 6: Jasco dataset 5: Mar/Apr 2024 thru Apr 2025 (AEON1 NEC, AEON2 ECS, AEON3 GEB, AEON5 WIB)Research Cruise 7 is planned for April 2026Project Website is:<br>https://eos.unh.edu/aeon<br>Contact: "Jennifer Miksis-Olds"<br>See also: https://eos.unh.edu/center-acoustics-research-education<br>Data are supplied as-is and no warranty is made, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty.

FSAS数据集（FSAS Datasets）按数据采集站点与测量日期进行组织，关于各航次的具体数据采集方式与时间的详细信息，请参阅配套航次报告。通常，FSAS测网由4至5条断面测线组成，测网以给定AEON站点的底置着陆器（bottom-lander）为中心布设。换能器深度设置为海面下1米，这也是搭载换能器的拖鱼（towfish）的常规拖曳深度。

每个.csv文件对应单一频率下所有断面测线的调查数据。文件命名规则如下，各组成部分以英文点号分隔：
Date：起始日期（示例：2022.01.08）
Cruise：航次船舶名称（如Warren、Beast等）
Site：三位字母的站点代码（如WIB等）
FSAS编号：航次中分配的FSAS编号，详见航次日志（如FSAS1）
Freq：三位数字的频率值（如120kHz）
Export bin dimensions：导出格网尺寸（示例：005mvert_100mhorz）

每个.csv文件包含以下变量：
Process ID：单次导出的唯一编号
Interval：格网列号
Layer：格网行号
S_V_mean：格内平均体积散射强度（S_V，单位：dB re 1m^-1）
NASC（海域面积散射系数，Nautical Area Scattering Coefficient）：格网的海域面积散射系数（单位：m^2 nmi^-2）
S_V_max：格内最大体积散射强度（单位：dB re 1m^-1）
S_V_min：格内最小体积散射强度（单位：dB re 1m^-1）
S_V_noise：格内平均噪声体积散射强度（单位：dB re 1m^-1）
Depth_mean：格网平均深度（单位：米）
Ping_M：格网对应中间ping的编号
Dist_M：GPS测得的首个ping至中间ping的距离（单位：米）
Date_M：中间ping的采集日期（格式：YYYYMMDD）
Time_M：中间ping的采集时间（UTC时区）
Lat_M：中间ping的纬度（十进制度）
Lon_M：中间ping的经度（十进制度）
Program_version：Echoview软件版本号
Processing_version：分析所用的文件格式版本（自Echoview 1.40起，取值固定为3）
Processing_date：数据导出日期（格式：YYYYMMDD）
Processing_time：数据导出时间（EST时区）
Alpha：校准文件中的吸收系数（单位：dB/m）
Gain_constant：回声测深仪校准常数（单位：dB re 1m^2/m^3）
Noise_Sv_1m：1米深度处的背景噪声体积散射强度（单位：dB re 1m^2/m^3）
ABC（面积背向散射系数，Area Backscattering Coefficient）：格网的面积背向散射系数（单位：m^2 m^-2）
Thickness_mean：格网沿波束轴的平均厚度（单位：米）
Frequency：回声测深仪频率值（单位：kHz）

本数据集采集自美国西北大西洋海域的声学与环境观测网络（Acoustic and Environmental Observation Network, AEON），该网络于2021年部署并投入运行。AEON网络包含5个观测节点，可补充缅因湾现有的海洋学监测基础设施。该观测网络可同步开展长期监测，涵盖声景以及多项声学相关参数，例如拉布拉多洋流与墨西哥湾流变化预计将影响缅因湾的关键区域内的海洋哺乳动物行为与猎物集中度。

本项目的首席研究员为新罕布什尔大学（University of New Hampshire, UNH）的Jennifer Miksis-Olds博士，其领导的合作研究团队包含来自UNH、JASCO Applied Sciences、石溪大学及其他合作机构的成员。

引用要求：引用本数据集时请标注：Jennifer Miksis-Olds，AEON项目首席研究员，新罕布什尔大学，资助方为美国国防部、海军研究办公室项目N00014-20-1-2312、N00014-23-12767、N00014-24-12740。

原始数据（含详细元数据）存档于美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）国家环境信息中心（National Centers for Environmental Information, NCEI）：
- 主动声学原始数据：https://www.ncei.noaa.gov/maps/water-column-sonar/
- 被动声学原始数据：https://www.ncei.noaa.gov/maps/passive_acoustic_data/

缅因湾的AEON网络共计5个观测节点，各数据集按站点标识如下：
AEON1 NEC：东北水道（Northeast Channel），加拿大
AEON2 ECS：东部大陆架（Eastern Coastal Shelf），加拿大
AEON3 GEB：乔治斯盆地（Georges Basin），美国
AEON4 JOB：约旦盆地（Jordan Basin），美国
AEON5 WIB：威尔金森盆地（Wilkinson Basin），美国

采样时段以「部署日期-回收日期」格式标注（示例：Jan2022-Feb2023表示2022年1月部署，2023年2月回收）。

数据集清单：
研究航次2：Jasco数据集1：2021年2月至2021年7月（覆盖AEON4 JOB、AEON5 WIB）
研究航次3：Jasco数据集2：2021年7月至2022年1月（覆盖AEON3 GEB、AEON4 JOB、AEON5 WIB）
研究航次4：Jasco数据集3：2022年1月至2022年12月（覆盖AEON1 NEC、AEON2 ECS、AEON3 GEB、AEON4 JOB、AEON5 WIB）
研究航次5：Jasco数据集4：2023年2月至2024年2月（覆盖AEON1 NEC、AEON2 ECS、AEON3 GEB）及2022年12月至2023年12月（覆盖AEON4 JOB、AEON5 WIB）
研究航次6：Jasco数据集5：2024年3/4月至2025年4月（覆盖AEON1 NEC、AEON2 ECS、AEON3 GEB、AEON5 WIB）
研究航次7：计划于2026年4月开展

项目官网：https://eos.unh.edu/aeon
联系方式："Jennifer Miksis-Olds"
补充参考：https://eos.unh.edu/center-acoustics-research-education

数据按「现状」提供，未明示或默示任何担保，且数据分发事实亦不构成此类担保。