Tephra is a product of large and explosive volcanic events and can travel thousands of kilometers before deposition. Consequently, tephra deposits are common in terrestrial, lacustrine, marine, and glacial environments. Because tephra deposition is a geologically synchronous event, tephras constitute important isochrones in the Quaternary sequence, not only in Japan but also throughout the nort...

In this work, we introduce a novel approach for determining joint sparse spectrum from several non-uniformly sampled data sets, where each set is assumed to have its own, possibly disjoint, and only partially known, sampling times. The potential of the proposed illustrated using spectral estimation problem in paleoclimatology. problem, point derives separate ice core measurement, resulting that...

Previous scenarios of plant migration corridors between the two main rainforests Neotropics, Amazon and Atlantic forests, are not satisfactory as they do account for modern distribution or phylogeography taxa. Here, we enlarge spatio-temporal scale different to better understand past connections Brazilian biomes. We used comprehensive published literature in phylogeography, ecology, paleoecolog...

The colonization of Mauritius exemplifies the role played by humans in altering ecosystems remote oceanic islands. This paper focuses on how we study those islands first colonized under global mantle colonialism. Here aim to provide a framework for historical ecological investigations disentangle processes, impacts, and outcomes during colonialism, considering local, regional, drivers. provides...

We propose that a new type of drill, alternately known as a Fast Mechanical-Access Drill, or Coiled Tubing Drill for Ice (CTDI), be developed for polar research. The proposed drill is similar in concept to the latest coiled tubing (CT) drills used for commercial oil and gas development. CT drills use a metal or advanced-composite tube to deliver fluid downhole to a hydraulic motor that drives a...

Biogeographers and ecologists often need to quantify species-environment relationships to understand the distribution of vegetation, and to assess changes in patterns resulting from environmental change. A water budget approach, which incorporates evaporative demand and moisture availability, is compared to traditional climatic variables in terms of ability to predict species growth and abundan...

Green Lakes State Park, located -15 km east of Syracuse, New York near the village of Fayetteville, is a stunning geologic and limnologic wonderland (Fig. 1). Located along the axis of a narrow glacial meltwater channel, the Park consists of two small, moderately deep (maximum water depth of -53 m) lake basins (Green Lake and Round Lake), protected along their flanks by steep walls of Silurian ...