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Case Study 2




                     Cape Verde Islands










                     Henry Gaudru                               settlement  in  AD1500  until  around  1760.  A
                                                                violent eruption took place in 1680, visible over
                     Introduction                               hundreds of kilometres and lasting for a few years.
                                                                It was during this eruption that the island earned
                     The Cape Verde Islands are located in the mid-  its name. Lava from the volcano has reached the
                     Atlantic Ocean some 450 kilometres (about 300   eastern coast of the island within historical times.
                     miles) off the west coast of Africa. This volcanic
                     archipelago  includes  ten  islands  and  five  islets,   Tourism
                     divided  into  the  windward  (Barlavento)  and   When  tourists  visit  Fogo  a  trip  to  the  volcano
                     leeward  (Sotavento)  groups. The  main  islands  in   summit is recommended, but it is not for the faint
                     the Barlavento group are Santo Antão, São Vicente,   hearted. Guides are there to help people with the
                     Santa Luzia, São Nicolau, Sal and Boa Vista; those
                     of  the  Sotavento  group  include  Maio,  Santiago,   trip to the volcano crater – the ascent of 1200m
                     Fogo and Brava. All the larger islands except Santa   takes approximately five hours and the descent into
                     Luzia are inhabited. Three islands – Sal, Boa Vista   the crater (180m) takes approximately two hours.
                     and  Maio  –  generally  are  level  and  very  dry.   In the 20th century there were two eruptions.
                     Mountains  higher  than  1280m  are  found  on   Lava spewed from one of the two chimneys on the
                     Santiago, Fogo, Santo Antão and São Nicolau.  southern  side  of  the  volcano  in  1951  and  also
                                                                created cones to the north and south of the Pico
                     Fogo Island                                –  such  as  Monte  Orlando,  Monte  Rendall  and
                                                                Monte Preto de Cima. These eruptions all began
                     Fogo (Portuguese for ‘fire’) is a volcanic island in   along a line of volcanic fissures extending from the
                     the Sotavento group of Cape Verde. The population   flank of the Pico de Fogo summit cone across the
                     of the island is approximately 38,000. Fogo Island   floor  of  Cha  das  Caldeiras. The  lava  flows  that
                     is sandwiched between the islands of Santiago and   issued from these vents spread over the northern
                     Brava.  It  is  one  of  the  southern-most  islands  of   and southern parts of Cha das Caldeiras and down
                     Cape Verde, but it is the most prominent of the   the eastern flank of the island (Figure CS2.1). In
                     group, rising to nearly 3000m above sea level at   1995 the volcano erupted again, forming a new
                     Mt Fogo, a single massive stratovolcano. Its largest   crater called Pico Pequeno. This eruption started
                     feature  is  a  9km  wide  caldera,  which  has  walls   on the night of 2 April 1995 when the flanks of
                     1km high. The caldera has a breach in its eastern   Pico split apart as a line of fissures opened. The
                     rim  and  a  large  peak  rises  in  the  centre. The   eruption began and a curtain of fire issued from
                     central cone Pico de Fogo forms the highest point   the  volcano  and  poured  down  into  the  crater.
                     of Fogo island at 2829m. Its summit is about 100m   Thousands of inhabitants fled. The day after, the
                     higher than the surrounding wall of the caldera.   whole island was covered by a thick cloud of dark
                     This summit cone, capped by a 500m wide, 150m   ash which extended 5km into the sky; lava bombs
                     deep  summit  crater,  was  apparently  in  almost   up to 4m wide landed half a kilometre from the
                     continuous activity from the time of Portuguese   eruption  and  a  day  later  lava  fountains  were







       Ch03.indd   57                                                                              3/28/2010   1:26:55 PM
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