how often do landslides occur

16 Oct how often do landslides occur

endstream endobj 59 0 obj <> endobj 60 0 obj <>stream The largest Canadian landslide known occurred in 1894 at Saint-Alban, Quebec. 0000274095 00000 n 0000106313 00000 n 0000089058 00000 n 0000264428 00000 n Shallow landslides also occur as flows, slides, or rockfalls and topples. 0000264592 00000 n H��WksG�ί�tʠ�w��Zǖ���bS�JI[[!�5��}�3ĥf���s�=�����?%�n�I�����C���;�u~��g�g������v�~A�+�g}S�\�J :��ߵ��Vu��W�s�]�^֯U�^�l?S݉�~��3݃�w�-��+m��\�j\5S?��0�E?�'����)-��K���&9���+. 180 0 obj <>stream

Large landslides are less common, occurring only about once every 10 years in Canada. 0000005763 00000 n Bk[�?lw�&cWXc�����S���/$�|�$*�c���ЙP7��{0W�5N-����o�ʫ��/c?`[��SY� �Ca����*zC�n0�*.s�.w��E7@ykZ��U�Mi���x3�����9z�d�/E�t{_����bj9dgj�Bg��'ZҮ����������G��~b After you learn something, Do Something!

They are often slow moving, but can also move rapidly. Landslides can occur anywhere, moving either slowly or quickly. 0000100586 00000 n 0000264705 00000 n 0000263656 00000 n H�\�ˎ�@E�|E/g#^�U�dY��ɋ'��� ŀ0^��ӗk�HAN�}��E����}7���44�0�S׷S��� ��]��k�f~��ks��$����u�}��ʥ?�����9I�Om����~o�.=���o��~v�[�]Nq�������.a/�6����K�����}�X�9e�� ױn�T�琬�x���=�$����v<5�)Y�_��Y���:��?�U�2���F6�+�\���d�U��;0׉��\#ޒU��K�_��\�pI.�B�'{��L��%=Kx��,�Yn���-��G�#��}>B���G�#��}>B���G�#���&���n�� �&���n��yzzxz�y�y�y�y�y�y:x8(�R䥌U�*c��XE�2/E^���机�ɼy)�Z���Ί:+묨�2�e�)�U䫏��|����1_C�F�����o�7�� �F�����o�7�� �F�����_a�"���X�R>Ǻ��ei�G�� ���}�xs�����/e�kttׇ���8�.F�L� 0 �T 0000011334 00000 n startxref �gaZ0K�S ^ ��S�Yk��y#�a� 0000272907 00000 n If you continue to use this site we will assume that you are happy with it. 0000273488 00000 n 0000004733 00000 n 0000003698 00000 n Emergency Preparedness Guide for People with Disabilities/Special Needs. 0000106350 00000 n

The speed of a landslide can range from extremely slow to extremely rapid. 0000599466 00000 n 0000144950 00000 n 0000074824 00000 n

Any area composed of very weak or fractured materials resting on a steep slope can and will likely experience landslides. 0000297724 00000 n 0000012142 00000 n

0000044422 00000 n Find out how to take action here. 0000027119 00000 n Once a landslip has started to move, the slope is permanently weakened.

These sensors send an alarm to the signaller, who will stop the train if alerted and wait until the area has been inspected by engineers. 0000276118 00000 n Landslides occur when masses of rock, earth, or debris move down a slope. 0000275556 00000 n 0000006690 00000 n Smaller, often more benign landslides can be initiated by roadway construction, building works, river or wave/tidal undercutting of slopes.

We use helicopters equipped with laser imaging, detection and ranging to do this. 0000004870 00000 n '�""8I�h�� A���

0000599852 00000 n They commonly occur when the ground becomes saturated with water after long periods of heavy rain. 0000270653 00000 n 0 0000012386 00000 n endstream endobj 61 0 obj <>stream 0000273098 00000 n 0000268736 00000 n

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Large landslides are less common, occurring only about once every 10 years in Canada. A train can’t swerve to avoid debris on the line in the same way a car can avoid a small obstruction on the road, so when there‘s debris on the tracks after a landslip, we will often need to re-route services.

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When they impact on railways, roads and other infrastructure, they can cause a lot of disruption.

h�l��Ka�?�%�r�r9MMH��? 0000273982 00000 n 0000012859 00000 n 0000274497 00000 n As the earth becomes heavier, the water forces apart grains of soil so that they no longer lock together – resulting in a landslip as the structure becomes loose and unstable. Landslides are generally classified by type of movement (slides, flows, spreads, topples, or falls) and type of material (rock, debris, or earth). Thousands of landslides occur every year in Canada, but most are small. 0000094785 00000 n

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0000023349 00000 n Debris flows, also known as mudslides, are a common type of fast-moving landslide that tends to flow in channels. 0000317527 00000 n 0000011765 00000 n 0000266152 00000 n 0000043820 00000 n 0000298235 00000 n 0000275622 00000 n

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These types of landslides are often called 'mudslides' by the news media. 0000045645 00000 n 0000006493 00000 n 0000277170 00000 n trailer 0000039412 00000 n 0000273422 00000 n 0000008608 00000 n

0000008196 00000 n Where do Landslides Occur?

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