This article discusses the role of the Souss river in disaster risk reduction, climate change adaptation and sustainable development through mainstreaming natural capital into macro-economic policies. The river course...This article discusses the role of the Souss river in disaster risk reduction, climate change adaptation and sustainable development through mainstreaming natural capital into macro-economic policies. The river course, rising from several headstreams in the high Atlas mountain and flowing westward for 180 km to the atlantic ocean is the beating heart of the Argan biosphere reserve. Its alluvial basin ensures the vital link between biodiversity and the population＇s utility functions for more than three million inhabitants. It is one of Morocco＇s most fertile regions where citrus fruits, vegetables, olives are grown beside an argan natural grove, and many of them are for export. Recent growing concern of local authorities tackles natural disasters and subsequent social issues associated to climate change, resource scarcities and flooding damages, especially after the 2014 flood events. This situation paved the way for local NGO incentives to embrace an ecological civilization approach for reconciliation with the Souss river. The local option adopted is to reverse the trend of intensive modem agriculture through a counterbalancing circular economy approach towards an agro-ecological producing pattern in order to sustain the river water balance.展开更多
We investigate attenuation scattering and loss properties in Souss basin(SW of High-Atlas) as a transition zone between the High and Anti Atlas ranges. This district consists in a thinned crustal patch with shallow se...We investigate attenuation scattering and loss properties in Souss basin(SW of High-Atlas) as a transition zone between the High and Anti Atlas ranges. This district consists in a thinned crustal patch with shallow seismicity and loose sedimentary trenches that perform an important contribution to augment seismic attenuation. So far, no coda waves approach in our knowledge have been used to draw satisfying outputs about the attenuation properties in the region. Therefore, this update suggests to correlate the lateral changes of seismic attenuation to different characteristics and asperities i.e. seismic activity,crustal age and thickness, heat flow, and ground deformation rate. To do so, we analysed coda waves derived from waveform data of more than 23 local earthquakes from seven broadband seismometers recorded during 2010 e2012 period. As a starter, we utilized the backscattering model which defines theseismic attenuation as inversely proportional to quality factor by the equation A ?1=. QQcestimates c were deducted at various central frequency bands 1.5, 3.0, 6.0, 9.0, 12.0 and 18.0 Hz according to different lapses times. The estimated average frequency dependence quality factor gives relation Qc? 120 f1;01,while the average Qcvalues vary from 149 at 1.5 Hz to 1895 at 18 Hz central frequencies. We observed an intimate dependence between quality factor and frequency ranges, which reflects the complexity of geological/geophysical pattern in the Souss basin and the presence of a variety of heterogeneities within the underlying crust.展开更多
文摘This article discusses the role of the Souss river in disaster risk reduction, climate change adaptation and sustainable development through mainstreaming natural capital into macro-economic policies. The river course, rising from several headstreams in the high Atlas mountain and flowing westward for 180 km to the atlantic ocean is the beating heart of the Argan biosphere reserve. Its alluvial basin ensures the vital link between biodiversity and the population＇s utility functions for more than three million inhabitants. It is one of Morocco＇s most fertile regions where citrus fruits, vegetables, olives are grown beside an argan natural grove, and many of them are for export. Recent growing concern of local authorities tackles natural disasters and subsequent social issues associated to climate change, resource scarcities and flooding damages, especially after the 2014 flood events. This situation paved the way for local NGO incentives to embrace an ecological civilization approach for reconciliation with the Souss river. The local option adopted is to reverse the trend of intensive modem agriculture through a counterbalancing circular economy approach towards an agro-ecological producing pattern in order to sustain the river water balance.
基金supported by the Scientific Institute, Rabat, Morocco
文摘We investigate attenuation scattering and loss properties in Souss basin(SW of High-Atlas) as a transition zone between the High and Anti Atlas ranges. This district consists in a thinned crustal patch with shallow seismicity and loose sedimentary trenches that perform an important contribution to augment seismic attenuation. So far, no coda waves approach in our knowledge have been used to draw satisfying outputs about the attenuation properties in the region. Therefore, this update suggests to correlate the lateral changes of seismic attenuation to different characteristics and asperities i.e. seismic activity,crustal age and thickness, heat flow, and ground deformation rate. To do so, we analysed coda waves derived from waveform data of more than 23 local earthquakes from seven broadband seismometers recorded during 2010 e2012 period. As a starter, we utilized the backscattering model which defines theseismic attenuation as inversely proportional to quality factor by the equation A ?1=. QQcestimates c were deducted at various central frequency bands 1.5, 3.0, 6.0, 9.0, 12.0 and 18.0 Hz according to different lapses times. The estimated average frequency dependence quality factor gives relation Qc? 120 f1;01,while the average Qcvalues vary from 149 at 1.5 Hz to 1895 at 18 Hz central frequencies. We observed an intimate dependence between quality factor and frequency ranges, which reflects the complexity of geological/geophysical pattern in the Souss basin and the presence of a variety of heterogeneities within the underlying crust.
