Lord Civil - News

Avebury stone circle was once a 'weird' square, archaeologists find

Source: The Telegraph, By Sarah Knapton, science editor, Posted: 29 JUNE 2017 12: 01AM

Avebury henge and stone circle

It is one of the greatest marvels of prehistoric Britain, the largest stone circle in Europe and a sacred meeting place for our ancestors which may even be aligned with the stars. But a new archaeological survey at Avebury in Wiltshire suggests the Neolithic monument had far odder beginnings.

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Utility Locating with GPR? – Get the most out of your data!

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GPR is now a complementary tool to EM when locating buried utilities. Unlike active EM methods where an individual utility is excited, GPR sees any buried feature that differs from its surroundings which can result in many targets being observed This article focuses on getting the most out of your utility data in two common but challenging situations:

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TIPS: Using GPS elevation with GPR

Using GPS elevation with GPR 1

When we think about GPS, we usually only think about our lateral position on the Earth, or, in other words, our XY position. But GPS also provides Z, your elevation. If you are collecting GPR data with GPS, the elevation is pretty much free information. When GPR data with GPS files are opened in the EKKO_Project software, the software automatically adds GPS position values for every GPR trace collected, including the elevation.

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An Ancient Synagogue Lost and Found

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Vilna Synagogue Facade gpr

Figure 1
The Great Synagogue of Vilna

Sixty Years after the Great Synagogue and Shulhoyf of Vilna (Vilnius) was razed, a team of international scientists is uncovering precious history with the assistance of pulseEKKO Ground Penetrating Radar (GPR).

The city of Vilnius has been recognized as an important cultural and scientific hub as far back as the mid-1500's. By the end of the 17th century, Vilnius had a reputation unrivalled in Europe for having the largest number of churches of different faiths. 

One such establishment was the Great Synagogue of Vilna. Over time, the Great Synagogue became surrounded with other buildings within the labyrinth-like Shulhoyf, a complex of twelve synagogues and other communal institutions. As World War II ravaged Europe the Great Synagogue was looted and burned, leaving the buildings empty and absent its former glory. In 1957, the Soviet Union, then in control of Lithuania, demolished the structure to provide space for a boulevard, and years later built an elementary school. Researchers believe the Great Synagogue was demolished by imploding it in on itself with nearly all the collapsed structure being left on site.

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The New pulseEKKO - GPR with No Limits

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Before there was Noggin, Conquest, LMX or Rescue Radar, there was pulseEKKO. pulseEKKO systems are the initial GPRs designed and built by Sensors & Software. Discerning professionals around the world know of the superior performance and signal quality of the pulseEKKO brand.

The product evolved from the early days of GPR, when many of the data collection techniques we take for granted today were still being developed by Sensors & Software and other GPR pioneers. This required a GPR system with the flexibility to change any data collection parameter or deployment configuration to try something new - time window length, temporal sampling interval, step size, stacking and triggering. Flexibility was also required to go beyond simple common-offset reflection data collection (the standard method for Noggin, Conquest and LMX) and change the antenna geometry for collection of Common-Mid-point (CMP, see the accompanying story), Wide Angle Reflection and Refraction (WARR), cross polarization, borehole, transillumination and multi-channel surveys. Today's pulseEKKO still retains this flexibility; this sets it apart from any other GPR system in the world and makes it the system of choice for GPR professionals.

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Experience the advanced capabilities of the new pulseEKKO data logger

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pulseEKKO GPR delivers unparalleled performance with a wide range of frequencies for applications ranging from deep mineral exploration and glaciology to high resolution geotechnical investigations and concrete imaging. pulseEKKO’s bistatic antennas allow for variable antenna separations – ideal for advanced survey methods including CMP, WARR, multi-fold, borehole, and transillumination surveys.

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Uncover Valuable Subsurface Insights

Noggin GPR systems have been recognized by leading researchers worldwide as providing the highest quality GPR data. We have coupled this performance with the new touchscreen digital video logger to enhance data acquisition and system flexibility.

Locating foundations from the not-so-distant past with Noggin GPR

Noggin GPR case study locating foundations displayed in Google earth

When we think of archaeology, we usually think of searching for artifacts from ancient civilizations in distant lands but the reality is that many archaeological projects involve looking for nearby objects from the not-so-distant past. The following Noggin case study from Dr. Jarrod Burks from Ohio Valley Archaeology, Inc. is a great example of rediscovering local, recent history.

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Tips: Automatic Output Files

Having a GPS connected to an LMX200 or Noggin GPR system automatically generates simple, standard output files that clearly communicate the position of underground features – without the need of any GPR processing software.

During data acquisition, the GPS records the survey paths of all GPR lines and grids collected in a GPR project. When the GPR operator finds a target of interest in the data, they can add a field interpretation by simply touching the target response directly on the display screen to add a colored dot at that position.

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