Hydrography Articles
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Scout - Hydro Profiling for Wastewater Lagoons Dons and any Pond or Lake
Polishing lagoon of a 2 cell 25 year old facultative wastewater lagoon system for a small town in the US. Design depth and depth at the time of survey 5’ deep. Measurements shown on the profile depict the amount of water above the measured top of the sludge in the lagoon. Color enhanced hydrographic picture GPS/GONASS data positioning detail Visual and digital data supplied Sludge ...
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Project - Modelling of Environmental Flow Regimes for the East Holland River Subwatershed, York Region, Ontario
Client: Lake Simcoe Region Conservation Authority: Mr. David Lembcke, Manager, Environmental Science and Monitoring, 120 Bayview Pkwy, Box 282, Newmarket, ON L3Y 4X1 (905.895.1281) Key Personnel: Spencer Malott, E.J. Wexler The Lake Simcoe Region Conservation Authority (LSRCA) has adopted the Environmental Flow (E-Flow) approach to meet the requirements of the 2009 Lake Simcoe ...
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Integrating Current Technology into Search and Recovery Operations
Search and recovery operations currently conducted by Fire and Law Enforcement Search and Rescue Teams often rely on outdated technology. Fish finders, inexpensive, low resolution sidescan sonars, and trained divers are the most used tools to search for downed planes, sunken ships, contraband, and missing persons. This application note will demonstrate an integrated approach using current, state ...
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Five-Day Non-Stop Met Ocean Data Collection - Case study
A Data Xplorer USV was sent on a115-hour mission to collect meteorological and oceanic data. Additionally, the vessel conducted several grid bathymetric surveys during the course of the mission. Data Xplorer conducted a five-day continuous voyage throughout the Southern Gulf Islands. The USV was tasked with the dual mission of continuously collecting meteorological data and conducting several ...
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The MRU-PD: A Motion, Heading and Position Sensor for Marine Applications
Hydrography and Bathymetry Bathymetric or Hydrographic surveys are survey methods used for submarine topography that have been implemented for observation of marine landscapes and structures for several decades. With the technology for executing a survey becoming more affordable, many businesses which can benefit from such data begin to pursue the proper equipment to use for themselves. Most ...
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Multibeam Bathymetric Survey of Lake Okanagan - Case study
In partnership with the Canadian Coast Guard, Open Ocean Robotics conducted a pilot surveying a portion of Lake Okanagan. The mission objective was to demonstrate the ability of their USVs to survey to IHO standards. Open Ocean Robotics’ uncrewed surface vehicle (USV) Data Xplorer was deployed in a pilot project with the Canadian Coast Guard to demonstrate its ability to accurately, ...
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Surveying company finds new opportunities with in-situ equipment - Case Study
Overview A Pacific Northwest surveying firm successfully expanded its capabilities using the Aqua TROLL 600 to monitor water quality for a large industrial customer. Challenge Statewide Land Surveying Inc. was looking for opportunities to take their surveying expertise into environmental applications. So, when a large industrial facility in Oregon asked them to conduct bathymetric surveys and ...
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GC-MS and LC-MS-MS sample preparation - Case Study
Customer: Bundesamt für Seeschifffahrt und Hydrographie (BSH) The Bundesamt für Seeschifffahrt und Hydrographie (BSH) is an authority that forms part of the German Federal Ministry of Transport, Building and Urban Development with offices in Hamburg and Rostock. It undertakes a complex range of tasks as an important maritime service provider in Germany. Application: Organic ...
By BUCHI
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Prosperity Years 1951-1953 - Part 4 Teledyne Hastings History
The early part of the 1950’s was prosperous for Hastings due in part to the demand for the Raydist and large military contracts as a result of the Korean War. Sales nearly tripled between 1950 and 1953 and there were almost 200 employees. Hastings had outgrown its space yet again and expanded to a 14,000 square foot building on Newcomb Avenue (current day location for Teledyne Hastings). ...
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Joint operation of M40 USV +3D Side scan sonar+ MS400 multibeam sounding system - Case Study
Location: The dangerous section of Longwan bridge in Foshan city and the harbors of Taishan power station in Tangshan bay, Taishan city Date: April 25-28, 2018 Instrument: Oceanalpha M40 multi-purpose unmanned boat Beijing Anderson Changchun 3DSS-DX-450 3D side scan sonar Beijing Zhuhai Putonghua MS-400 multibeam sounding system User: Guangdong Banting Survey Technology Co., Ltd. ...
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M80 USV Conducts the Underwater Topographic Survey in The Antarctica - Case Study
Location: Inexpressible island, Ross Sea, the Antarctica Time: December 2017 Equipment: M80USV + Reson T50P multibeam sonar; SE40 USV + SOUTH SDE_18 singlebeam sonar User: China National Oceanic Administration Nanhai Survey Technology Center Survey area: 5 square kilometers Duration: 14 hours Background: In November 2017, China’s 34th Antarctica scientific expedition was ...
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ME40 Conducts Autonomous Bathymetric Survey in Zhenjiang city - Case Study
Time: April, 2015 Location: Jiangxinzhou, Zhenjiang, Jiangsu Company: Shanghai Waterway Engineering Design and Consulting Co.,Ltd. Project Background: The survey project needs to measure the depth of shallow water area in Yangtze River. The survey area is 50m to the bank and 4km long, in which are full of crushed stones. It is impossible for manned ship to survey in this area. Autonomous ...
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ME40 丨OceanAlpha Delivers Innovative USV Solution to Mining Industry - Case Study
OceanAlpha’s autonomous bathymetric survey boat ME40 for hydrographic survey has been applied to the mining industry for tailing dam surveys, in addition to its common application in lakes, rivers, reservoirs and oceans. All you need to do is set up the survey way-points and the boat will go automatically with GPS navigation and acquire online bathymetric data. SURVEY CHALLENGES ...
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Laying a Foundation (1947-1950)
By 1947, the Hastings Instrument Company could count many successful projects. Their list of products included the following: Raydist Navigation System Magnetic Switch and Coil Maximum Recording Accelerometer Visibility Meter While the list of projects was impressive, the company wanted to grow their profits further. Charles Hastings decided to look at his business model and make some ...
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A Brief History of Stevens' 116 Year Chart Recorder Legacy
The legendary mechanical chart recorder for environmental monitoring dates back to 1911, when John C. Stevens invented the Type A chart recorder. In 1906, J.C. Stevens was the Hydrographer for the USGS out of Portland, Oregon, and was soon promoted to District Engineer. While with the USGS, he realized that hiring local citizens to observe and record height of water was not accurate or reliable. ...
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Hydrochemical characterization and evaluation of the impact of AMD processes on river basin areas in the Iberian Pyrite Belt
The hydrographic network in the Iberian Pyrite Belt (IPB) (south-west Europe) is intensively affected by acid mine drainage (AMD) processes. This represents a unique worldwide scenario of extractive mining activity for more than 4,000 years. In order to be able to achieve possible restorations, it is necessary to reduce the scale of possible actions for future environmental improvements, at ...
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Groundwater level response to hydrogeological factors in a semi-arid basin of Beijing, China
In this study, the mode of groundwater level fluctuations is analyzed by statistical approaches for 51 monitoring wells located in a semi-arid basin in Beijing from 1998 to 2013. Firstly, a geostatistical method was performed to characterize the spatial and temporal behaviors of data sets and analyze the responding mechanism of groundwater level to hydrologic features using the Geostatistics ...
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Extreme rainfall statistics in the Marche region, Italy
A statistical analysis of the rainfalls is carried out for detecting a possible trend in the observed data. The rainfall dataset refers to the historical series collected in the hydrographic basins of the Marche region. On the one hand, the annual maximum daily, hourly and sub-hourly rainfalls have been analysed, on the other hand Climate Change Indices by Expert Team on Climate Change ...
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Isotopic analysis of water cycle elements in different land covers in a small headwater watershed
In this study, comparisons of isotopic variation of rainfall, throughfall, surface water, and groundwater were conducted in the Meilin watershed, which represents two different land uses, chestnut wood and bamboo. Also, isotopic differences between rainfall and throughfall were identified in these sub-watersheds. The results showed that the isotopic value of incremental rainfall, incremental ...
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The role of surface storage of brackish marshes in the southern area of the Baltic Sea (northern Poland)
This paper attempts to define the dynamics of the surface storage in water circulation in brackish marshes located in the contact zone of the land and sea. This study estimated the quantity of water stored in the area of the Beka reserve during mapping between December 2011 and December 2013. The study area is characterized by the simultaneous influence of marine and fresh waters. The ...
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