World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Fall-experiments on Merapi Basaltic Andesite and Constraints on the Generation of Pyroclastic Surges : Volume 1, Issue 2 (14/07/2006)

By Schwarzkopf, L. M.

Click here to view

Book Id: WPLBN0004007131
Format Type: PDF Article :
File Size: Pages 16
Reproduction Date: 2015

Title: Fall-experiments on Merapi Basaltic Andesite and Constraints on the Generation of Pyroclastic Surges : Volume 1, Issue 2 (14/07/2006)  
Author: Schwarzkopf, L. M.
Volume: Vol. 1, Issue 2
Language: English
Subject: Science, Eearth, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2006
Publisher: Copernicus Gmbh, Göttingen, Germany

Citation

APA MLA Chicago

Dingwell, D. B., Spieler, O., Scheu, B., & Schwarzkopf, L. M. (2006). Fall-experiments on Merapi Basaltic Andesite and Constraints on the Generation of Pyroclastic Surges : Volume 1, Issue 2 (14/07/2006). Retrieved from http://worldlibrary.in/


Description
Description: Earth & Environmental Sciences, Ludwig-Maximilians-Universität München, Theresienstr. 41/III, 80333 München, Germany. We have performed fall-experiments with basaltic andesite rock samples from Merapi volcano, using an apparatus designed to analyze samples heated up to 850°C. Relative pressure changes during impact and fragmentation of the samples were measured by a pressure transducer. From 200°C, dynamic pressure waves were formed on impact and fragmentation. Peak and duration of the pressure signal, and degree of fragmentation were found to strongly increase with increasing temperature of rock samples. The pressure waves are most likely generated by sudden heating of air forcing it to expand. We propose that the observed pressure changes are analogues to pyroclastic surges that may be generated on impact and fragmentation of large blocks during passage of a pyroclastic flow over a steep cliff. We infer that rock temperatures of ca. 400°C are sufficient for this process to occur, a temperature common in pyroclastic flows even in distal reaches.

Summary
Fall-experiments on Merapi basaltic andesite and constraints on the generation of pyroclastic surges

 

Click To View

Additional Books


  • Geometry of the Turkey-arabia and Africa... (by )
  • A Calibrated Radiocarbon Database of Lat... (by )
  • Paleodepth Variations on the Eratosthene... (by )
  • Holocene Evolution and Sedimentation Rat... (by )
  • Extracting Low Frequency Climate Signal ... (by )
  • Stimulated Infrared Emission from Rocks:... (by )
  • A Normalised Seawater Strontium Isotope ... (by )
  • A Linear Theory of Physical Properties i... (by )
  • Location of the River Euphrates in the L... (by )
  • Characteristics of Chlorites in Seismoge... (by )
  • Impact Vesiculation – a New Trigger for ... (by )
  • Plate Tectonics Conserves Angular Moment... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.