CREG Journal (ISSN 1361-4800)

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Contents of journal 129
March 2025

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CREG Journal 129 (0-24) (PDF 13.5MB)        Individual articles may be available below

This issue has a cover date of March 2025 and was published on 1 March 2025.

 

Front Cover (1) (PDF 668KB)     

Through-the-Ice Radiolocation and Communication from a Glacial Cave on Spitsbergen Photo: Veronica Guerreo / Stone Aerospace

 

Contents (2) (PDF 689KB)     

List of contents and masthead information.

 

News and Notes (2)  For download see previous item

Spring 2025 Field Meeting, Editorial Team, Hidden Earth.

 

Lessons Learned in a Rainfall and Stream Depth Monitoring Project (3-5) (PDF 2.0MB)     

Graham Christian & Gareth Edwards outline some of the practicalities and issues encountered in monitoring rainfall and stream depth in Ogof Ffynnon Ddu. It is hoped that, in discussing the things they found out in running these projects, the wider cave science community can have some ideas of what to avoid and some things to adopt. While they talk about rain and depth gauges, any issues will apply equally to other sensors and "gizmos".

 

Introduction to the Radio Spectrum (6-7) (PDF 456KB)     

Understanding the radio spectrum, and how different bands have different characteristics, is key to knowing which bands are suitable for various caving applications. Mike Bedford provides a guide and also clears up some incorrect but common terminology. This article is #10 in our Fundamentals series.

 

We Hear (8) (PDF 505KB)     

Mike Bedford reports: Self-guiding Show Cave Visitors, Sodium-ion Batteries Offer Charging in Seconds and 3D Surveying with iPad Pro.

 

Through-the-Ice Radiolocation and Communication from a Glacial Cave on Spitsbergen (9-12) (PDF 2.4MB)     

Brian Pease describes through-the-ice radiolocation and communication experiments from a cave in a glacier above Longyearbyen, the world's northernmost town, on the island of Spitsbergen.

 

Practical Use of GIS in Cave Exploration (13-16) (PDF 1.7MB)     

Geographic Information Systems are becoming commonplace and finding application in discovering new cave entrances. Atanas Rusev presents examples of using GIS to find new entrances by analysing satellite and orthophoto images.

 

A Simple DSP-based Radiolocation Receiver (17-20) (PDF 2.5MB)     

Most published designs of radiolocation receivers have been exclusively hardware-based. Here, Andrew Pitkin, N4ADP, provides details of his DSP-based design, which limits the complexity of the hardware and so is easy to build.

 

Building Blocks (21) (PDF 280KB)     

The Inductor, a lesser known, but important electrical component - by Tony Haigh.

 

Searching for Muons in Caves (22-24) (PDF 3.8MB)     

Vladimã­r Mikluš and Tomáš Trčka from Brno University of Technology, Matt Rowberry from the Czech Academy of Sciences, and Mike Rogerson from Northumbria University describe their search for muons beneath the Earth's surface.