Skip to Content

<

Jersey Tides

A cache by Tom Tom's Army Send Message to Owner Message this owner
Hidden : 09/10/2009
Difficulty:
2 out of 5
Terrain:
1.5 out of 5

Size: Size: not chosen (not chosen)

Join now to view geocache location details. It's free!

Watch

How Geocaching Works

Please note Use of geocaching.com services is subject to the terms and conditions in our disclaimer.

Geocache Description:

The tide on the island of Jersey, the largest of the Channel Islands is one of the biggest in the world.

We suggest that you attempt this cache near low tide - it will be easier then. The beach is very safe, but please pay attention to the tide and look after children.


Tides are the result of the gravitational pull of the sun and moon on the oceans. The highest and lowest tides occur approximately two days after the new and full moon. These tides, referred to as spring tides, take place around midday - very convenient for rock pool enthusiasts! Following spring tides, the tidal range decreases until approximately one week later when the smallest tidal ranges occur - neap tides. Be sure to check the local paper for times of high and low water before going out on the beach.



So, when we are thinking about how such a small island can have such a large tide, we must remember its location in the English Channel. Consider, a massive bulge of water moving backwards and forwards twice each day and when it reaches the corner of the English Channel that Jersey lies in, this bulge of water really hasn’t got anywhere to go. Hence the huge high tides.

This beach area is all known as Green Island, but to claim this Earthcache you are interested in the island of rocks which lie on the SSW edge of the beach. To claim this cache you must do two things.

1) Look carefully at the tide line on Green Island which should be visible from the published co-ordinates. Estimate the height of the island above sea level and then estimate the height of the part that remains untouched by the high tide. Email your answers to us.

2) Post the tide times for the day of your visit in your log and email them to us saying whether they are neap tides or spring tides.

3) We would appreciate it if cachers could continue to post images of themselves or their gps device at the published co-ordinates, showing the rocks or Green island. This is optional.

Additional Hints (No hints available.)



Return to the Top of the Page

Reviewer notes

Use this space to describe your geocache location, container, and how it's hidden to your reviewer. If you've made changes, tell the reviewer what changes you made. The more they know, the easier it is for them to publish your geocache. This note will not be visible to the public when your geocache is published.