819 research outputs found
Fear of Floating Needn't Imply Fixed Rates: Feasible Options for Intermediate Exchange Rate Regimes
No full textThe criteria of the theory of optimum currency areas suggest that many (most?) countries are not good candidates for either of the poles of genuinely fixed exchange rates or freely floating exchange rates. Thus many countries should have an interest in intermediate exchange rate regimes. However, in a world of substantial capital mobility most forms of intermediate exchange rate regimes have proven to be highly crisis prone. The paper argues that the unholy trinity analysis doesn't imply that intermediate exchange rate regimes are inherently unstable, but rather that exchange rate and monetary policies need to be jointly determined. The difficulties of maintaining such consistency are as much political as economic since temporarily pegged or managed rates create a time inconsistency problem. Therefore policy officials need some institutional insulation from short sighted political pressures. A problem with most intermediate regimes is that they have focused on particular forms of limited exchange rate flexibility per se, rather than the weight that should be given to the exchange rate in setting monetary policy. It is argued that OCA theory provides the framework for determining the appropriate weights and limits on the amount of sterilized intervention to maintain the consistency between exchange rate and monetary policies necessary to avoid currency crises. The paper also considers a number of the issues involved in integrating their approach with the literature on open economy aspects of inflation targeting.political economy; capital mobility; exchange rates; discipline
Cenozoic exhumation in the Mediterranean and the Middle East
No full textWe investigate the processes driving spatial-temporal patterns of Cenozoic exhumation in the Mediterranean and the Middle East by compiling >7300 published low-temperature thermochronometric ages and converting them into exhumation rates through a formal inversion process based on thermal modeling and closure temperature kinetics. Exhumation rates are resolved using piecewise-continuous spatial variability and timesteps of five million years. The spatial variability of the inferred rates is constrained by a plate tectonic reconstruction based on the integration of available kinematic data. In this model we recognize different tectonic blocks with a relative homogenous tectono-sedimentary and tectono-magmatic history. The inverted erosion rates for each block are then compared with regional and local geodynamic rates, eustatic curves, and climatic forcing to decipher common patterns and possible teleconnections among different blocks. The results document asynchronous exhumation across different tectonic blocks indicating local (i.e., at the scale of a single orogen) rather than regional (i.e., at the scale of multiple orogens) control on erosion rates. The main processes driving exhumation include collisions of Arabia, Adria, and Iberia with Eurasia, and subduction and retreat of the various Neo-Tethys slabs and back-arc basins. Specifically, we recognize two tectonic domains: collisional deformation zones where exhumation is controlled by surface uplift and erosion, and back-arcs areas where exhumation is controlled by tectonic denudation. In both cases we observe an increase in mean rates and rate variance during tectonic activity, followed by a decrease in each metric as tectonic activity wanes. Finally, we note (with a few exceptions) an overall increase in exhumation rates over most of the Mediterranean and Middle East in the last 5 Ma. This increase is more evident in areas of active tectonics and/or high topographic relief. Although we cannot exclude a tectonic contribution to some of these higher rates, the occurrence of higher exhumation rates, even in regions that did not experience enhanced tectonic activity, indicates that such an increase occurred most likely in response to the late Cenozoic global cooling and the Pleistocene increase in climate cyclicit
Erosional response of granular material in landscape models
No full textISSN:2196-632XISSN:2196-6311ISSN:2196-631
Erosion rates and orogenic-wedge kinematics in Taiwan inferred from fission-track thermochronometry
No full textAppropriations of Irish drama by modern Korean nationalist theatre : a focus on the influence of Sean O’Casey in a colonial context
No full textMy thesis explores how a translated author on the periphery of the host culture’s
translated repertoire can be at once subversive and innovative on the colonial scene,
using as an example the case of Sean O’Casey in colonial Korea. It explores the
importation of Irish drama in modern Korean theatre during the colonial period and
examines the appropriations of O’Casey’s plays by a central Korean playwright, Yu
Chi-jin, in creating his own plays. Under Japanese colonial rule in the early twentieth
century, intellectuals perceived the supreme task for the Korean people to be the
recovery of national sovereignty and independence. The modern Korean theatre
movement which rose among Korean intellectuals and dramatists during the colonial
period was to play a major part in this task. The ultimate goal of this movement was
to establish a modern national theatre promoting Korean culture and educating the
people, thereby recovering national independence. As their modernised dramatic
polysystem was still "young", Korean intellectuals and dramatists who were
involved in the theatre movement had to borrow dramatic models from other
countries. One of the models they chose was Irish playwrights, especially those who
were involved in the Irish dramatic movement. They published or staged the works
of W.B. Yeats, Lord Dunsany [Edward John Moreton Drax Plunkett], Augusta
Gregory, J.M. Synge, St. J. Ervine, T.C. Murray and Sean O'Casey. Although
O'Casey was considered an important dramatist in the Irish dramatic movement, he
was a playwright on the periphery in the list of translated Irish dramatists in Korea
due to the colonisers’ censorship. However, he remained as a subversive and
innovative playwright on the colonial scene by virtue of being appropriated by Yu
Chi-jin who used O’Casey’s plays as models when creating his own works. In
discussing the subject matter of my thesis, I use Even Zohar’s polysystems theory as
a starting point in looking at ideological issues surrounding translation and extend
the discussion to offer a postcolonial perspective. While most translation in a
colonial context was considered as "an expression of the cultural power of the
colonisers," my thesis shifts the focus to translation as an expression of the cultural
power of the colonised. I explore how the colonised uses another colonised culture to
subvert the colonisers’ power
The last phase of deposition in the Swiss Molasse Basin: from foredeep to negative-alpha basin
No full textSedimentation and viscosity controls on forearc high growth
No full text23 pages, 12 figures, 2 tables, supplementary material https://doi.org/10.1111/bre.12518.-- The data that support the findings of this study are available from the corresponding author upon reasonable request..-- This is the pre-peer reviewed version of the following article: David Fernández‐Blanco, Utsav Mannu, Teodoro Cassola, Giovanni Bertotti, Sean D. Willett; Sedimentation and viscosity controls on forearc high growth; Basin Research 33(2): 1384-1406 (2021), which has been published in final form at https://doi.org/10.1111/bre.12518. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived VersionsCrustal rheology and surface processes strongly influence strain distribution and shape of orogenic wedges at their front but how they influence the wedge rear is still unclear. Here, we analyse the coupled control of viscosity and sedimentation on forearc high growth during advanced stages of subduction accretion. We use 2D thermo‐mechanical finite element models constrained with data of the south Anatolian margin. Our simulations show that forearc highs grow as a thermally‐activated viscosity drop in the lower crust induces ductile deformation and viscous flow. Initial viscosity and the amount of sediments in the forearc basin control non‐linearly the occurrence and timing of the thermally‐activated viscosity drop, and thus of the growth of the forearc high. High sedimentation rates result in thicker forearc basins that stabilise the subduction wedge and delay the onset of uplift in the forearc high. Low viscosities promote earlier onset of forearc high uplift and lead to larger morphological variability along the subduction margin. Increasing either the sedimentation rate or viscosity may prevent forearc high formation entirely. The thermo‐viscous forearc highs grow at an age set by wedge thermal state as a function of accretionary flux, wedge viscosity, and synorogenic sedimentation. Our models explain vertical motions in south Anatolia and potentially in other accretionary margins, like the Lesser Antilles or Cascadia, during the formation of their broad forearc highsWith the funding support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S), of the Spanish Research Agency (AEI)Peer reviewe
Constraining glacial reshaping of the European Alps: Insights from morphometric analyses, pale-topographif reconstructions and numerical modeling of glacial erosion
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