[vc_row equal_height=”yes” content_placement=”middle” css=”.vc_custom_1561459135578{margin-bottom: 25px !important;}”][vc_column width=”2\/3″][vc_single_image image=”335″ img_size=”large” css=”.vc_custom_1561459144213{margin-bottom: 0px !important;padding-bottom: 0px !important;}”][\/vc_column][vc_column width=”1\/3″ color_style=”light” css=”.vc_custom_1510741637960{margin-left: -15px !important;padding-bottom: 7px !important;background-color: #58749f !important;}” offset=”vc_hidden-sm vc_hidden-xs”][vc_column_text]<\/p>\n
historical and modern seismographs – where does the smoked paper come from?<\/span><\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/4″ offset=”vc_hidden-sm vc_hidden-xs”][vc_widget_sidebar sidebar_id=”submenu-erdbebenwarte”][\/vc_column][vc_column width=”3\/4″][vc_row_inner][vc_column_inner][vc_column_text]<\/p>\n [\/vc_column_text][vc_column_text]The Wiechert Earthquake Station G\u00f6ttingen currently performs seismic measurements using both the modern broadband seismograph STS-2 and \u2013 with equally reliable results \u2013 the historical instruments from more than 100 years ago.<\/p>\n The Old Earthquake Vault houses the[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner width=”2\/3″][vc_column_text]<\/p>\n The instrument installed here has been continuously recording seismic movements since 1902, with just a few interruptions due to maintenance work. It is the prototype for similar instruments which set the standard for many observatories (more than 150 worldwide) over decades and are described in detail in classic textbooks of seismology. continue<\/a>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”346″ img_size=”large” onclick=”custom_link” link=”http:\/\/www.erdbebenwarte.de\/en\/astatischer-horizontalseismograph\/”][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner width=”2\/3″][vc_column_text]<\/p>\n The mass of this short-period horizontal seismograph weighing 17,000 kg consists of an iron bucket filled with many tonnes of barite. It is suspended on three holders of a scaffolding structure standing on the ground. The sophisticated mechanism makes this instrument so sensitive that a needle movement can already be triggered by directing a strong breath of air at the iron bucket. continue<\/a>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”345″ img_size=”large” onclick=”custom_link” link=”http:\/\/www.erdbebenwarte.de\/en\/17-tonnen-pendel\/”][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner width=”2\/3″][vc_column_text]<\/p>\n The seismograph was built between 1904 and 1905 in G\u00f6ttingen. Since then, the instrument has been recording seismic movements at a writing speed of 60 mm\/min virtually without any interruptions. Just like the astatic pendulum, it is the prototype for similar instruments at many observatories. continue<\/a>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”343″ img_size=”large” onclick=”custom_link” link=”http:\/\/www.erdbebenwarte.de\/en\/vertikalseismograph\/”][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner width=”2\/3″][vc_column_text]The instruments from the workshops of G. Bartels and Spindler & Hoyer, G\u00f6ttingen, set the gold standard worldwide from the outset to the 1960s! Only the electronic measuring instruments eclipsed the significance of the mechanical instruments. Yet, the historical measuring instruments still deliver \u2013 precise and reliable \u2013 results on a daily basis.[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/3″][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner width=”2\/3″][vc_column_text]<\/p>\n The “data carrier” for the recordings of the historical seismographs is smoked paper. Since smoked paper is not commercially available, we produce it ourselves. continue<\/a>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=”1\/3″][vc_single_image image=”342″ img_size=”large” onclick=”custom_link” link=”http:\/\/www.erdbebenwarte.de\/en\/russpapier-herstellen\/”][\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner width=”2\/3″][vc_column_text]<\/p>\nMeasuring instruments<\/h1>\n
Astatic horizontal seismograph<\/strong><\/a><\/h2>\n
17-tonne pendulum<\/strong><\/a><\/h2>\n
Vertical seismograph<\/a><\/strong><\/h2>\n
Production of smoked paper<\/strong><\/a><\/h2>\n
Modern seismograph<\/strong><\/a><\/h2>\n