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Geosciences, Volume 8, Issue 10

October 2018 - 30 articles

Cover Story: The reconstruction of 71 ka of atmospheric Hg deposition from a remote peatland in Easter Island showed the role of natural processes in local Hg accumulation. This paper is a good example of how climate (both precipitation and temperature) has controlled abrupt changes in Hg accumulation. Other processes, such as mire vegetation, peat decomposition, aeolian dust, oceanic evasion, and volcanic activity may have played a secondary role in Hg content. The combinations of all these processes caused a 28-fold range of variation in Hg concentrations in a remote and undisturbed area. Our maximum values are higher than those recorded in most peat records belonging to the Industrial Period, highlighting that natural factors played a significant role in local Hg accumulation—sometimes even more so than anthropogenic sources. View the paper here.
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Articles (30)

  • Article
  • Open Access
22 Citations
6,249 Views
18 Pages

Property damages caused by hydrometeorological disasters in Texas during the period 1960–2016 totaled $54.2 billion with hurricanes, tropical storms, and hail accounting for 56%, followed by flooding and severe thunderstorms responsible for 24%...

  • Article
  • Open Access
6 Citations
4,034 Views
17 Pages

Digital particle image velocimetry records high resolution images and allows the identification of the position of points in different time instants. This paper explores the efficiency of the digital image-technique for remote monitoring of surface v...

  • Article
  • Open Access
10 Citations
3,916 Views
14 Pages

This work focuses on the paradigms of a multidimensional and interdisciplinary evaluation of geomorphological heritage and its valorisation within a geosystemic reading of relations between a geomorphological and cultural landscape. This research aim...

  • Article
  • Open Access
37 Citations
7,394 Views
16 Pages

This contribution aims to reveal patterns of research on natural hazards worldwide, based on the analysis of the Clarivate Analytics Web of Science database. A set of 588,424 research items published between 1900 and 2017 is analyzed, covering differ...

  • Article
  • Open Access
7 Citations
4,278 Views
16 Pages

Globally, there is a lack of resources to survey the vast seafloor areas in need of basic mapping data. Consequently, smaller areas must be prioritized to address the most urgent needs. We developed a systematic, quantitative approach and on-line app...

  • Article
  • Open Access
18 Citations
5,149 Views
25 Pages

The acidification of agricultural soils in high rainfall regions is usually countered by the application of finely ground calcite or dolomite. As this carbonate dissolves, soil pH is raised, but CO2 is released. Mining activities often produce large...

  • Article
  • Open Access
50 Citations
5,681 Views
17 Pages

We present the results of the study of a large and rapid landslide disaster event, which occurred in Montescaglioso, southern Italy, on 3 December 2013. The studied landslide developed following extreme rainfalls in a zone characterized by a stabiliz...

  • Article
  • Open Access
39 Citations
6,314 Views
14 Pages

Simulations of Moisture Gradients in Wood Subjected to Changes in Relative Humidity and Temperature Due to Climate Change

  • Charlotta Bylund Melin,
  • Carl-Eric Hagentoft,
  • Kristina Holl,
  • Vahid M. Nik and
  • Ralf Kilian

Climate change is a growing threat to cultural heritage buildings and objects. Objects housed in historic buildings are at risk because the indoor environments in these buildings are difficult to control and often influenced by the outdoor climate. H...

  • Article
  • Open Access
8 Citations
5,291 Views
16 Pages

The Riding Trail as Geotourism Attraction: Evidence from Iceland

  • Guðrún Helgadóttir and
  • Ingibjörg Sigurðardóttir

The geological aspects of tourism are much more extensive than just places to be viewed and/or experienced. The terrain traveled is also a geological phenomenon and an attraction in itself. For a hiker or a rider the type of trail is important. Featu...

  • Article
  • Open Access
16 Citations
5,241 Views
19 Pages

The Role of Climate: 71 ka of Atmospheric Mercury Deposition in the Southern Hemisphere Recorded by Rano Aroi Mire, Easter Island (Chile)

  • Marta Pérez-Rodríguez,
  • Olga Margalef,
  • Juan Pablo Corella,
  • Alfonso Saiz-Lopez,
  • Sergi Pla-Rabes,
  • Santiago Giralt and
  • Antonio Martínez Cortizas

The study of mercury accumulation in peat cores provides an excellent opportunity to improve the knowledge on mercury cycling and depositional processes at remote locations far from pollution sources. We analyzed mercury concentrations in 150 peat sa...

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Geosciences - ISSN 2076-3263