Chinese Surveying

Japan has protested against alleged surveillance activities by a Chinese vessel near disputed islands. Japan says it spotted a Chinese ship early on Sunday that was apparently carrying out research in what Tokyo considers its waters in the East China Sea. It says the Chinese ship was surveying an area about 30 kilometres west of Uotsuri Island and left after verbal warnings from a Japanese patrol boat. Japan issued a protest to the Chinese embassy in Tokyo, which said it would check the details of the incident. (read more)

2007-02-06 11:12:24

Riverbed Surveying

Hydromapping - High Resolution Shallow Water Mapping from an Airborne Platform

In order to meet the requirements of the European Water Framework Directive (EU-WFD), authorities face the problem of performing area-wide surveys of all kinds of inland waters repeatedly. Especially for mid-sized and small rivers, a traditional survey approach imposes almost insurmountable logistical efforts and costs. Employing the new airborne hydrographic laser scanner RIEGL VQ-820-G, potential large-scale surveying of a river system is exemplarily demonstrated on the river Loisach in southern Germany, carried out by the company AirborneHydroMapping (AHM) and the University of Innsbruck. By Martin Pfennigbauer, RIEGL, and Frank Steinbacher, University of Innsbruck, Austria. In co-operation with the Bavarian Water... (read more)

2012-03-08 04:33:36

Remote Hydrographic Surveying System

Staff at Frontier Precision, USA, have been working hard to design and build a safe, affordable and reliable hydrographic surveying system that is simple to use, and easily deployed. The boat uses an RC system that is integrated with a SonarMite high-accuracy echo sounder and a Trimble GNSS receiver which communicate via long-range Bluetooth, with a Trimble TSC3 running Trimble Access. This system provides safe data capture in otherwise challenging hydrographic environments or areas that are too small for conventional boats. In November 2013, one of the boats was used to perform a hydrographic survey of a utility crossing in... (read more)

2013-12-02 04:01:09

Canadian Arctic Surveying

For the third year running James Williams has ventured into the Canadian Arctic with Aquatics to support land and hydrographic survey work for Shell Canada, Shell Oil, Devon, EnCana and Esso. The team of seven, including local Inuit to protect them from the unpredictable wildlife, camped rough through the Arctic tundra river system of the Mackenzie Delta. Using the latest sonar technology in the form of a Ross Sweep system with 6 transducers mounted on a 15m boom, water depths from 5m to less than 1m were consistently mapped in many of the shallow areas that are located at the... (read more)

2007-01-08 03:55:10

Surveying Lac de Vassivière

Together with the Interdisciplinary Centre for the Development of Ocean Mapping (CIDCO) in Canada, French engineering school ENSTA Bretagne, the University of Ghent in Belgium and the HCU University in Germany conducted an intensive hydrographic and topographic survey training programme at the artificial Lac de Vassivière in France in October 2011. The project lasted three weeks, during which the students were placed in real working conditions and had to face challenging situations, such as surveying in very shallow waters, poor GPS coverage, variable water column conditions depending on time of day and processing large volumes of data in a short... (read more)

2012-07-24 04:44:52

Ice-jam Flood Surveying

The large, poleward flowing rivers of Siberia, such as the Ob River, experience persistent and severe floods when river ice breaks up in the spring. Ice-jams are common on the Tom River, a tributary of the Ob, resulting in a rapid rise in water levels upstream of the jam and submergence of thousands of homes. Furthermore, a sudden breach of the ice-jam releases a flood wave that can cause extensive damage downstream. By Ray A. Kostaschuk, Simon Fraser University, Canada; Dmitriy A. Vershinin; Valeri A. Zemtsov, Tomsk State University, Western Siberia, Russia. Floods in large rivers are caused by a... (read more)

2014-08-12 10:34:55

Surveying the Florida Reef

The Florida Reef became a menace to shipping in the 1500s when the Spanish discovered that the safest way home for their New World gold and silver was north through the Florida Straits. With the Cay Sal and Bahama banks to starboard, the reef, arcing along the Florida Keys, to port, and the Gulf Stream on their stern, first the treasure fleets and later thousands of European ships made the passage through the ‘New Bahama Channel’. As the territory west of the Appalachians and then west of the Mississippi was settled, American ships began to fill the Straits as well,... (read more)

2012-07-26 03:14:24

Handbooks of Offshore Surveying

This three-volume Handbook of Offshore Surveying has been written by hydrographic surveyors, geophysicists, survey engineers, rov pilots, geodesists, captains, project managers, geologists and land surveyors. All examples detailed in the Handbook are derived from situations encountered in their years as Surveyors offshore and onshore around the world. The three volumes comprise of: Projects, Preparation & Processing (Volume I ); Positioning & Tides (Volume II) and Acquisition Sensors (Volume III). Skilltrade was founded to provide vocational training to professionals who are affiliated with the offshore survey industry. Because of the demand for training in general, courses are now also... (read more)

2011-02-09 03:02:37

Surveying in the Extremes

Western Ross Sea, Antarctica

In 2007, the National Institute of Water & Atmospheric Research's (NIWA) deepwater 70m research vessel Tangaroa returned from a voyage to Antarctic waters. It had here continued hydrographic survey work begun in 2001 for New Zealand's national hydrographic authority, Land Information New Zealand (LINZ). It had also completed a biodiversity study of the north-western Ross Sea and around the Balleny Islands (from a depth of about 50m down to about 700m) for the Ministry of Fisheries. NIWA is New Zealand's provider of environmental research and consultancy services in coast, oceans, freshwater, fisheries, atmosphere and climate. In recent years it has... (read more)

2008-01-01 01:00:00

Surveying and Charting

Hydro International Interviews Rear Admiral (R) Andres Roque Di Vincenzo

Surveying, charting and monitoring a complex and vast area which includes features from rivers, waterways, a long Atlantic coast to the Antarctic Peninsula environment, is a very challenging task. Only a well-equipped Governmental Hydrographic Institution can cope with it. The Servicio de Hidrografia Naval (SHN) of the Republic of Argentina, continuously produces the nautical information needed by sailors and the scientific world. In doing this, SHN benefits from its membership of the International Hydrographic Organization and of the Organisation of the Antarctic Treaty. Rear Admiral Di Vincenzo, who has headed the SHN for the past four years, explains how they... (read more)

2011-12-19 03:33:53