Identification

Dynodydd

Identifier

NRW_DS87115

Teitl Amgen

Alternative Title

• Marine Monitoring Report No. 22

Laith Metadata

Metadata Language

English

Lineage

Using an automated system for continuous monitoring, water turbidity, temperature and salinity were measured, along with meteorological variables (wind speed and direction, wind gust speed, atmospheric pressure, air temperature, rainfall). A Conductivity Temperature Depth (CTD) sensor, fitted with Optical Backscatter (OBS) sensor measuring backscattered light at 880nm was used for oceanographic measurements. Weather stations in Menai Bridge and Caernarfon airport provided meteorological data. CTD monitoring was carried out at one fixed site at the Low Water Springs mark off the end of the rock jetty on Ynys Faelog in the Menai Strait. Meteorological data came from weather stations in Menai Bridge and Caernarfon airport. Automatically collected data was logged every 5 minutes. The recorded observations were collected from 2003-2005. Instrument calibration data is included, and described in detail in CCW Marine Monitoring Report No. 22. Secchi depth measurements have been made sporadically in the strait for the last 40 years (Lumb, 1989,1990; Birkett and Maggs, 2001, Kratzer et al., 2003). These show that there was a steady decrease in water clarity in the strait between the early 1960's and the early 1980's, but that since then, clarity has been improving so that Secchi depths are more or less back to the levels they were 40 years ago.

Dyddiad cyfeirnod y set ddata (Cyhoeddiad)

Dataset Reference Date (Publication)

2006-02-28

Extent

Extent

Hyd

Geographic Extent

Wales (WLS)

N

W

E

S

 

Distribution

Quality

Keywords

Spatial Reference System

Content

Constraints