Author: max

Water Quality Drag Buoy test 2

We did the first tests of our low-cost water quality drag buoy, measuring Dissolved Oxygen, Ph, Salinity, Sea Surface Temperature, GPS position. Everything working well except for the salinity probe, we switched this out for the backup and ready to test again!

CCMAR Scientific Diving Course

This week in Madeira we completed a scientific diving course from Center for Marine Sciences (CCMAR) part of the¬†University of the Algarve¬†system. The course lasted four days, in which we reviewed a range of scientific practices from developing research questions, selecting study methods, sampling design, dive planning, team and equipment preparation, underwater survey and sampling… Read more »

Python random to eliminate bias

When taking samples or deciding which places to record observations, for example along a transect line, we need sometimes to choose sites randomly. Imagine a transect line that’s 50 meters long, and we want to take samples at random intervals, either left or right and between one and three meters of the transect line. A… Read more »

Data buoy v3!

Congratulations team on a successful test of the latest version 3 of our databuoy! Still waiting to see the results of the wave data and compare (validate) with the pressure recording device, but during the test deployment, seeing the average wave heights and direction coming off the buoy, to the wireless receiver, transferred through the… Read more »

Viz, no viz

Unfortunately one of our marker buoys was lost to a recent storm. The heavier weight of the added chain, which we hoped would keep the mooring fixed, indeed made it too fixed, so that the rope first ate through the rubber hose chafe protection, then ate through the rope. We dove the mooring yesterday and… Read more »

Ocean Wave Data Buoy video

Video we shot introducing the first version and deployment of our Ocean Wave Data Buoy

Sustainability and the Web

collage of iceland drawing and the authors on bicycles

The kind of work that we are doing, investigating sustainability issues, needs to be supported both conceptually and materially, so we (are trying to) host our web content using as close 100% renewable energy as possible. This is on the face of it easily accomplished, and not too expensive simply by choosing so-called ‘green hosting’…. Read more »

Low cost data buoy

One of the things we have been working on is a low-cost ocean wave data buoy, this is a marine environment sensing platform which we are developing to monitor ocean wave height, period and direction as part of a project exploring ocean wave energy capture. Its one aspect of our work as postdoctoral researchers with… Read more »