Delayed subsidence of the Dead Sea shore due to hydro-meteorological changes

Many studies show the sensitivity of our environment to manmade changes, especially the anthropogenic impact on atmospheric and hydrological processes. The effect on Solid Earth processes such as subsidence is less straightforward. Subsidence is usually slow and relates to the interplay of complex hydro-mechanical processes, thus making relations to atmospheric changes difficult to observe. In the Dead Sea (DS) region, however, climatic forcing is strong and over-use of fresh water is massive. An observation period of 3 years was thus sufficient to link the high evaporation (97 cm/year) and the subsequent drop of the Dead Sea lake level (− 110 cm/year), with high subsidence rates of the Earth’s surface (− 15 cm/year). Applying innovative Global Navigation Satellite System (GNSS) techniques, we are able to resolve this subsidence of the “Solid Earth” even on a monthly basis and show that it behaves synchronous to atmospheric and hydrological changes with a time lag of two months. We show that the amplitude and fluctuation period of ground deformation is related to poro-elastic hydro-mechanical soil response to lake level changes. This provides, to our knowledge, a first direct link between shore subsidence, lake-level drop and evaporation

International competition in cotton goods in the late nineteenth century with special reference to Far Eastern markets

SIGLEAvailable from British Library Lending Division - LD:D56947/85 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Does discrimination breed grievances - and do grievances breed violence? : New evidence from an analysis of religious minorities in developing countries

Since Ted Gurr’s Why Men Rebel it has become conventional wisdom that (relative) deprivation creates grievances and that these grievances in turn lead to intergroup violence. Recently, studies have yielded evidence that the exclusion of ethnic groups is a substantial conflict risk. From a theoretical angle, the relationship is straightforward and is likely to unfold as a causal chain that runs from objective discrimination to (subjective) grievances and then to violence. We test this proposition with unique group-format data on 433 religious minorities in the developing world from 1990 to 2008. While religious discrimination indeed increases the likelihood of grievances, neither grievances nor discrimination are connected to violence. This finding is supported by a large number of robustness checks. Conceptually, discrimination and grievances can take very different shapes and opportunity plays a much bigger role than any grievance-based approach expects.publishe

Highly Active Ice-Nucleating Particles at the Summer North Pole

The amount of ice versus supercooled water in clouds is important for their radiative properties and role in climate feedbacks. Hence, knowledge of the concentration of ice-nucleating particles (INPs) is needed. Generally, the concentrations of INPs are found to be very low in remote marine locations allowing cloud water to persist in a supercooled state. We had expected the concentrations of INPs at the North Pole to be very low given the distance from open ocean and terrestrial sources coupled with effective wet scavenging processes. Here we show that during summer 2018 (August and September) high concentrations of biological INPs (active at >−20°C) were sporadically present at the North Pole. In fact, INP concentrations were sometimes as high as those recorded at mid-latitude locations strongly impacted by highly active biological INPs, in strong contrast to the Southern Ocean. Furthermore, using a balloon borne sampler we demonstrated that INP concentrations were often different at the surface versus higher in the boundary layer where clouds form. Back trajectory analysis suggests strong sources of INPs near the Russian coast, possibly associated with wind-driven sea spray production, whereas the pack ice, open leads, and the marginal ice zone were not sources of highly active INPs. These findings suggest that primary ice production, and therefore Arctic climate, is sensitive to transport from locations such as the Russian coast that are already experiencing marked climate change