@article{fdi:010044309, title = {{E}ruptive and earthquake activities related to the 2000 eruption of {M}ount {C}ameroon volcano ({W}est {A}frica)}, author = {{A}teba, {B}. and {D}orbath, {C}atherine and {D}orbath, {L}ouis and {N}tepe, {N}. and {F}rogneux, {M}. and {A}ka, {F}. {T}. and {H}ell, {J}. {V}. and {D}elmond, {J}. {C}. and {M}anguelle, {D}.}, editor = {}, language = {{ENG}}, abstract = {{M}ount {C}ameroon is an active volcano located in the {G}ulf of {G}uinea, west of {C}entral {A}frica. {A}fter the {M}arch-{A}pril 1999 eruption on the {SW} flank, another eruption of the volcano occurred in 2000. {I}t took place from three sites on the southwest flank and near the summit. {T}he first eruptive site was located 500 m to the southwest of the summit, at 3900 m altitude. {A}ctivity on this site was mainly explosive with no lava flow. {T}he second site was located between 3220 and 3470 m altitude. {L}ava was emitted along {NNE}-{SSE} fissures from this site and flew towards {B}uea, the main city of the area, stopping similar to 4 km from the first houses. {T}he last site was located in the south western flank at 2750 m altitude. {T}he lava ejected from an old cone near the first 1999 eruptive site was divided into two branches, for a total length of around 1 km. {T}he location of active volcanic cones in 1999 and 2000 seems to be linked to the local tectonics. {T}he pre-eruptive period was characterized by a seismic swarm which may be a precursor recorded in {M}arch 2000 by an analogue seismic station. {T}he main shock was a magnitude 3.2 event, and was felt by the population in {E}kona town located on the eastern flank. {I}t had a {M}odified {M}ercalli intensity of {III}-{IV}. {W}hen the eruption started, a temporary network of short period 3-component seismic stations was set up around the volcano to improve the monitoring of seismic activity. {T}he co-eruptive period from late {M}ay to {S}eptember was characterized by sequences of earthquake swarms, volcanic tremor and a family of earthquakes having similar waveform and appearing regularly in {A}ugust and early {S}eptember. {S}ome of the earthquakes were felt by the population in {B}uea and its environments. {T}he largest seismic event recorded had a magnitude of 4. {D}uring the post-eruptive period from mid-{S}eptember to {D}ecember, seismicity returned to its background level of 1-3 earthquakes per 3 days. {H}ypocenter locations reveal a linear narrow structure under the summit zone which could represent the magmatic conduit of the volcano. {T}he frequency/magnitude relationship revealed a b-value of 1.43 higher than those previously determined, but more representative of volcanic media. {S}eismic energy release was gradual after the 2000 eruption started.}, keywords = {{M}ount {C}ameroon ; volcano ; eruption ; seismicity ; earthquake swarms}, booktitle = {}, journal = {{J}ournal of {V}olcanology and {G}eothermal {R}esearch}, volume = {179}, numero = {3-4}, pages = {206--216}, ISSN = {0377-0273}, year = {2009}, DOI = {10.1016/j.jvolgeores.2008.11.021}, URL = {https://www.documentation.ird.fr/hor/fdi:010044309}, }