{"name":"climate-change-recorded-in-the-sediments-of-chew-bahir-southern-ethiopia-during-the-last-45000","title":"Climate change recorded in the sediments of Chew Bahir, southern Ethiopia, during the last 45,000 years","maintainer":"Verena Foerster","maintainer_email":"V.Foerster@uni-koeln.de","notes":"East African paleoenvironments are highly variable, marked by extreme fluctuations in moisture availability, which has far-reaching implications for the origin, evolution and dispersal of Homo sapiens in and beyond the region. This paper presents results from a pilot core from the Chew Bahir basin in southern Ethiopia that records the climatic history of the past 45 ka, with emphasis on the African Humid Period (AHP, \u223c15\u20135 ka calBP). Geochemical, physical and biological indicators show that Chew Bahir responded to climatic fluctuations on millennial to centennial timescales, and to the precessional cycle, since the Last Glacial Maximum. Potassium content of the sediment appears to be a reliable proxy for aridity, showing that Chew Bahir reacted to the insolation-controlled humidity increase of the AHP with a remarkably abrupt onset and a gradual termination, framing a sharply defined arid phase (\u223c12.8\u201311.6 ka calBP) corresponding to the Younger Dryas chronozone. The Chew Bahir record correlates well with low- and high-latitude paleoclimate records, demonstrating that the site responded to regional and global climate changes.","type":"researchdata","resources":[{"description":"","format":"URL","url":"http://www.sciencedirect.com/science/article/pii/S104061821200448X","created":"2015-01-29T20:10:47.594145","state":"active","package_id":"79ee9542-ba3c-4b6e-9538-cef36f3d5e20","last_modified":"2021-10-23T03:10:27","id":"9d6760e6-c7e9-4d20-a57d-b7e87ddcbeda","name":"http://www.sciencedirect.com/science/article/pii/S104061821200448X"}],"tags":[{"name":"african humid period"},{"name":"chew bahir"},{"name":"climate reconstruction"},{"name":"ethiopia"},{"name":"potassium"},{"name":"younger dryas"}],"extras":[{"key":"bibtex:address","value":""},{"key":"bibtex:author","value":"Foerster, Verena and Junginger, Annett and Langkamp, Oliver and Sch\u00e4bitz, Frank and Gebru, Tsige and Asrat, Asfawossen and Umer, Mohammed and Lamb, Henry F. and Wennrich, Volker and Rethemeyer, Janet and Nowaczyk, Norbert and Trauth, Martin H."},{"key":"bibtex:booktitle","value":""},{"key":"bibtex:citation","value":""},{"key":"bibtex:doi","value":""},{"key":"bibtex:editor","value":""},{"key":"bibtex:howpublished","value":""},{"key":"bibtex:isbn","value":""},{"key":"bibtex:journal","value":""},{"key":"bibtex:month","value":""},{"key":"bibtex:number","value":""},{"key":"bibtex:organization","value":""},{"key":"bibtex:pages","value":""},{"key":"bibtex:publisher","value":""},{"key":"bibtex:school","value":""},{"key":"bibtex:series","value":""},{"key":"bibtex:type","value":"article"},{"key":"bibtex:key","value":""},{"key":"bibtex:url","value":""},{"key":"bibtex:volume","value":""},{"key":"bibtex:year","value":"2013"},{"key":"Spatial","value":"{\"type\":\"Point\",\"coordinates\":[36.81,4.704]}"}],"groups":[{"image_url":"http://crc806db.uni-koeln.de/fileadmin/template/images/projects/imageA3.png","name":"a3"}],"author":" Verena Foerster","author_email":false}{"help":"Update a dataset (package).\n\n You must be authorized to edit the dataset and the groups that it belongs\n to.\n\n Plugins may change the parameters of this function depending on the value\n of the dataset's ``type`` attribute, see the ``IDatasetForm`` plugin\n interface.\n\n For further parameters see ``package_create()``.\n\n :param id: the name or id of the dataset to update\n :type id: string\n\n :returns: the updated dataset (if 'return_package_dict' is True in the\n context, which is the default. Otherwise returns just the\n dataset id)\n :rtype: dictionary\n\n ","success":false,"error":{"message":"Unable to add package to search index: Solr returned an error: 500 Lock obtain timed out: NativeFSLock@\/var\/lib\/solr\/data\/index\/lucene-d6f7b3bf6fe64f362b4d45bfd4924f54-write.lock org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@\/var\/lib\/solr\/data\/index\/lucene-d6f7b3bf6fe64f362b4d45bfd4924f54-write.lock \tat org.apache.lucene.store.Lock.obtain(Lock.java:85) \tat org.apache.lucene.index.IndexWriter.init(IndexWriter.java:1562) \tat org.apache.lucene.index.IndexWriter.(IndexWriter.java:1418) \tat org.apache.solr.update.SolrIndexWriter.(SolrIndexWriter.java:191) \tat org.apache.solr.update.UpdateHandler.createMainIndexWriter(UpdateHandler.java:98) \tat org.apache.solr.update.DirectUpdateHandler2.openWriter(DirectUpdateHandler2.java:173) \tat org.apache.solr.update.DirectUpdateHandler2.addDoc(DirectUpdateHandler2.java:220) \tat org.apache.solr.update.processor.RunUpdateProcessor.processAdd(RunUpdateProcessorFactory.java:61) \tat org.apache.solr.handler.XMLLoader.processUpdate(XMLLoader.java:139) \tat org.apache.solr.handler.XMLLoader.load(XMLLoader.java:69) \tat org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:54) \tat org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131) \tat org.apache.solr.core.SolrCore.execute(SolrCore.java:1317) \tat org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:338) \tat org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:241) \tat org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) \tat org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388) \tat org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) \tat org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) \tat org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) \tat org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) \tat org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230) \tat or - \n\n\nError 500 Lock obtain timed out: NativeFSLock@\/var\/lib\/solr\/data\/index\/lucene-d6f7b3bf6fe64f362b4d45bfd4924f54-write.lock\n\norg.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@\/var\/lib\/solr\/data\/index\/lucene-d6f7b3bf6fe64f362b4d45bfd4924f54-write.lock\n\tat org.apache.lucene.store.Lock.obtain(Lock.java:85)\n\tat org.apache.lucene.index.IndexWriter.init(IndexWriter.java:1562)\n\tat org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:1418)\n\tat org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:191)\n\tat org.apache.solr.update.UpdateHandler.createMainIndexWriter(UpdateHandler.java:98)\n\tat org.apache.solr.update.DirectUpdateHandler2.openWriter(DirectUpdateHandler2.java:173)\n\tat org.apache.solr.update.DirectUpdateHandler2.addDoc(DirectUpdateHandler2.java:220)\n\tat org.apache.solr.update.processor.RunUpdateProcessor.processAdd(RunUpdateP","__type":"Search Index Error"}}