Deep UV Optics for C3 Submersible Fluorometer

Turner Designs offers a Deep UV Optical Kit for their C3 Submersible Fluorometer which enables detection of refined oils and fuels. Recent developments in LED technology allow for excitation wavelengths down to 260nm. Using BTEX as the standard, the C3 is able to detect as low as 0.1ppm over a dynamic range >2500ppm. The C3 Submersible Fluorometer is designed to incorporate up to three optical sensors, temperature and depth. Sensors can be selected to detect in vivo Chlorophyll a, blue green algae, rhodamine WT dye, fluorescein dye, crude oil, CDOM, optical brighteners, and now also refined fuels. Turbidity sensors are... (read more)
2010-05-06 10:40:13

Ordnance Survey Recognised

Ordnance Survey's goal of establishing standards in data collection and management has won industry recognition. The British national mapping agency's data production management methodology, termed Production Partnership Management (PPM), is being put forward for inclusion in the body of ISO documents supporting geographic information.   It follows a workshop involving organisations from across the geographic information industry in Europe and Asia. The event was sponsored by EuroGeographics, EuroSDR, FIG and the Association for Geographic Information. Attendance was high with representation from both private survey companies and national mapping organisations.   The event, held at Ordnance Survey's Southampton head office, focused... (read more)
2008-02-14 09:27:04

Reflectorless Total Station Series

Nikon-Trimble has introduced today the NPR-302 Series of Nikon Total Stations - high precision, long-range reflectorless mechanical total stations with laser pointers. Each new model in the series offers Nikon optics.   The Nikon NPR-302 Series offers three models, the Nikon NPR-362, NPR-352 and NPR-332 and features 3" and 5" angle accuracy models. The Nikon NPR-302 Series offers a distance measurement accuracy of up to ±(2 + 2 ppm x D) mm. The Nikon total stations use a patented technology to providing long distance reflectorless measurement range of up to 300 metres. In addition, the reflectorless technology eliminates the need... (read more)
2008-04-08 10:28:16

How the Seafloor of the Antarctic Ocean is Changing

...and the Climate is Following Suit
Experts have reconstructed the depth of the Southern Ocean at key phases in the last 34 million years of the Antarctic’s climate history. The glacial history of the Antarctic is currently one of the most important topics in climate research. Why? Because worsening climate change raises a key question: How did the ice masses of the southern continent react to changes between cold and warm phases in the past, and how will they do so in the future? A team of international experts, led by geophysicists from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), has... (read more)
2020-08-24 11:04:04

Further Clues about Subsurface Oil Movements

The National Oceanic and Atmospheric Administration (NOAA), the US Environmental Protection Agency (EPA) and the White House Office of Science and Technology Policy (OSTP) have released its second peer-reviewed, analytical summary report about subsurface oil monitoring in the Gulf of Mexico. The report contains preliminary data collected at 227 sampling stations extending from one to 52 kilometres from the Deepwater Horizon/BP wellhead. Data shows movement of subsurface oil is consistent with ocean currents and that concentrations continue to be more diffuse as you move away from the source of the leak. This confirms the findings of the previous report. The... (read more)
2010-07-28 11:03:17

Seismic Activity Data Collection on the Ocean Floor

Sponsored Article
Unlike neighbouring Japan, earthquake activity is infrequent in the peninsula area of South Korea, and those that do occur tend to be low in intensity. Typically, earthquakes in this region measure between 2.0 and 5.0 on the Richter scale[1]. The record for the quake with the highest magnitude on the Korean Peninsula stood for some time, recorded at 5.3 in 1980. This was recently overtaken by a 5.8 magnitude tremor in Gyeongju in 2016 and a 5.4 magnitude tremor in Pohang, followed soon after by a 4.8 magnitude aftershock tremor. Data on these events is collected using the existing seismological... (read more)
2019-08-06 08:30:32

VRS Systems for Improved Efficiencies in Port Operations

Mariners were one of the first public groups to adopt GPS in its early days Ð nearly twenty years ago. The next leap forward in the acceptance and widespread use of GPS was Differential GPS (DGPS). DGPS was driven by demand from the offshore marine survey industry, which wanted reliable, round-the-clock, sub-metre accuracy. Accuracy being infectious, the marine survey industry adopted the centimetre-accurate Real Time Kinematic (RTK) GPS surveying that land surveyors had pioneered. The latest development in precision surveying accuracy and reliability is enhanced RTK using the Virtual Reference Station (VRS) system. This paper explains VRS application in the... (read more)
2008-01-01 01:00:00

Meet the Hydro International Team at Oceanology International (G-P)

In the third week of March, the entire marine world will be gathering in London, as this is where the biannual Oceanology International event is taking place. The exhibition and the conference bring together technological and scientific developments. With over 550 exhibitors and a state of the art conference programme OI12 is definitely the place to be. OI12 will be held from 13 to 15 March at the ExCel Exhibition and Conference Centre in Londonfs Docklands. The organisers are expecting at least 7,000 visitors to attend. Hydro international will of course be present. We not only have a stand (No.... (read more)
2012-03-08 10:02:38

Oceanology International 2010 Preview (2)

This is the continuation of the Oceanology International Preview. For companies A - L, see part 1  MacArtney Underwater Technology Group MacArtney will be introducing their newest innovation in multiplexers - the NEXUS MK E electrical multiplexer, which is designed to the same high standards as the fibre optic multiplexer range with the telemetry part of the multiplexer adapted to non-fibre optic cables. Another highlight will be the demonstration of a working active heave compensation winch, the Cormac 3 Stainless Steel winch. It will demonstrate load stability during vessel movement on the sea. MacArtney will show their Focus ROTV, camera... (read more)
2010-03-01 05:03:47
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