GeoLog

Field Work

Imaggeo on Mondays: Simulating a mission on Mars

Imaggeo on Mondays: Simulating a mission on Mars

Establishing a human presence on Mars is increasingly seen by space agencies and private organizations as the horizon frontier in human space exploration. These long-duration missions however, impose a high degree of technological, operational, physical and psychological challenges. Mars analog habitats, such as the Mars Desert Research Station (MDRS) in Utah (U.S.) are established to conduct field experiments, test new hardware, new operational concepts and study the social and crew teamwork dynamics in support to these future manned missions to the Red Planet.

The International Emerging Space Leaders (IESLs) Crew (or MDRS Crew 205) is composed by eight outstanding international space young professionals and students, who together, will undertake a Mars analog mission from February 9th to 24th at MDRS. The IESL’s Crew is an interdisciplinary and multicultural team including members from Kuwait, Spain, Germany, the U.K. and the U.S. During the two-week rotation, the crew will simulate a mission to the Red Planet.

The team will conduct multiple research projects relevant to space exploration in areas such as in-situ resources utilization, human behavior, leadership and teamwork, astronomy, geology, EVA optimization, and science outreach. In addition to these research projects, the crew will also be in charge of the maintenance of MDRS facilities and daily operations of the station. This mission will also ultimately contribute to a better understanding of the requirements, benefits and challenges of international teams in future manned missions.

Description by Maria Grulich, as it first appeared on imaggeo.egu.eu.

Imaggeo is the EGU’s online open access geosciences image repository. All geoscientists (and others) can submit their photographs and videos to this repository and, since it is open access, these images can be used for free by scientists for their presentations or publications, by educators and the general public, and some images can even be used freely for commercial purposes. Photographers also retain full rights of use, as Imaggeo images are licensed and distributed by the EGU under a Creative Commons licence. Submit your photos at http://imaggeo.egu.eu/upload/.

Imaggeo Photo Competition finalists 2019 – who will you vote for?

Imaggeo Photo Competition finalists 2019 – who will you vote for?

This year’s Photo Competition judging panel received more than 600 photo submissions, covering fields across the geosciences. The fantastic finalist photos are below and they are being exhibited in Hall X2 (basement, Brown Level) of the Austria Center Vienna – see for yourself!

Do you have a favourite? Vote for it! There is a voting terminal (also in Hall X2), just next to the exhibit. Voting closes by Thursday 11 April and the winners will be announced online on Friday!

Time flows as the climate is changing. Credit: Kasia Tokarska (distributed via imaggeo.egu.eu). A long-exposure look at Brúarfoss waterfall in Iceland.

 

Aurora show on the road. Credit: Junbin Zhao (distributed via imaggeo.egu.eu). Busy drivers pass by without noticing the beautiful northern lights’ show overhead.

Pulp ……eruption! Credit: Valerio Acocella (distributed via imaggeo.egu.eu). A close-up of a vent erupting blobs of blood-red basaltic magma during the Mt. Etna 2001 eruption, one of the most important of this volcano in the last century. This eruption marked a new cycle in the recent life of Etna and is also associated with flank instability threatening the lower inhabited eastern slope.

 

Temporary pond within ice fall of Fox Glacier. Credit: Stefan Winkler (distributed via imaggeo.egu.eu). A temporary pond of meltwater on the surface of Fox Glacier, Southern Alps, New Zealand. Due to the fast movement and the rough surface, there is not an established supraglacial or englacial meltwater system resulting in temporary ponds forming and subsequently draining during over several weeks to a few months.

 

43°29’S 147°08’E – Meet me at the lighthouse. Credit: Vytas Huth (distributed via imaggeo.egu.eu). Light pollution is an environmental hazard we often overlook. When I had the chance to view the Southern Hemisphere’s night sky with only the Antarctic Ocean in front of me, I realised how much we have already lost in the Northern Hemisphere and Europe. It almost seems as if the night is becoming extinct.

 

Something sticks out. Credit: Sophie von Fromm (distributed via imaggeo.egu.eu). While the windblown sand buries everything beneath, a lonely stick remains standing. Such sand storms occur quite frequently at the Gobabeb Training and Research Centre in the Namib Desert.

 

Coloured canyon curves. Credit: Nikita Churilin (distributed via imaggeo.egu.eu). The morning sunlight is reflecting in the grains of sand in the Lower Antelope Canyon and paint the canyon in unusual colours.

 

Humans’ route in harmony with nature. Credit: Anatolii Chernov (distributed via imaggeo.egu.eu). The Carpathian Mountains in Western Ukraine are a nice place to learn about structural geology and for relaxation. It is a pleasure to observe beautiful corners of the Earth, where people try to respect and cherish natural beauty.

 

Message from the deep. Credit: Katja Bigge (distributed via imaggeo.egu.eu). Stromboli volcano, the original example of Strombolian activity defined by small regular eruptions.

 

A frozen time capsule. Credit: Florian Konrad (distributed via imaggeo.egu.eu). The Schwarzmooskogel-Höhlensystem is located in the Totes Gebirge in Austria and consists of 17 individual caves with a total length of about 140km. Inside, it felt like time did not pass or just passed really slowly. The shapes that the ice had sculptured were endless and took our breath away.

The EGU General Assembly will take place from 07 to 12 April 2019 in Vienna, Austria. For the full session programme and more information on the General Assembly, see the EGU 2019 website and follow us on Twitter (#EGU19 is the official conference hashtag) and Facebook.

Imaggeo on Mondays: Exploring the underground cryosphere

Imaggeo on Mondays: Exploring the underground cryosphere

The winter season is a good time to take advantage of cold weather activities, whether that’s hitting the ski slopes or warming up by a fire, but for Renato R. Colucci, it’s also one of the best time’s to study the Earth’s underground cryosphere.

Colucci, who took this featured photograph, is a researcher at Italian Institute for Marine Sciences (ISMAR) of the National Research Council (CNR) and is a scientific lead partner for the Cave’s Cryosphere and Climate project, C3 for short. The C3 project aims to monitor, study, date, and model alpine ice cave environments.

This photo was taken by Colucci while he and the C3 project team were surveying a large ice deposit in the Vasto cave, situated within the Southeastern Alps of Italy. Speleologists of the E. Boegan Cave Commission began documenting the caves in this region in the 1960s, making it a great site for studying underground cryosphere today. For the past few years the C3 team has been monitoring the microclimates of these caves as well as analysing how the ice masses within are melting and accumulating ice.

There are many different kinds of ice deposits in caves, but the main difference is how these types accumulate their frozen mass. For some cave ice deposits, like the one featured in this photo, the snowfall that reaches the cave interior amasses over time into solid layers of ice, as is typical for many glaciers. However, other deposits take form when water from melting snow or rain percolates through rock’s voids and fractures, then freezes and accumulates into permanent ice bodies in caves.

These high-altitude underground sources of ice are a lesser-known faction of the cryosphere since they are not very common or reachable to scientists, but still an important one. Often the permanent ice deposits in caves contain pivotal information on how Earth’s climate has evolved over time during the Holocene.

However, if the Earth’s global temperatures keep increasing, this data might not be available in the future. While ice masses in caves are more resilient to climate change compared to their aboveground counterparts, many of these deposits, and the vital data they store, are melting away at an accelerating rate. “Global warming is rapidly destroying such important archives,” said Colucci.

Through this project, the researchers involved hope to better understand the palaeoclimate information stored in these deposits and how the ice will respond to future climate change.

By Olivia Trani, EGU Communications Officer

Imaggeo is the EGU’s online open access geosciences image repository. All geoscientists (and others) can submit their photographs and videos to this repository and, since it is open access, these images can be used for free by scientists for their presentations or publications, by educators and the general public, and some images can even be used freely for commercial purposes. Photographers also retain full rights of use, as Imaggeo images are licensed and distributed by the EGU under a Creative Commons licence. Submit your photos at http://imaggeo.egu.eu/upload/.

Imaggeo on Mondays: Patterns in the peatland

Imaggeo on Mondays: Patterns in the peatland

This magnificent pattern is the result of hundreds and hundreds of years of evolution. In this structured minerotrophic peatland in Northern Quebec (Canada), which can also be called a string fen or aapa mire, the green peat ridges (or strings) alternate with water-filled hollows (or flarks). Often flarks are replaced by ponds, which vary in number and size. This pattern of strings and flarks (or ponds) runs perpendicular to the flow of ground water.

Many theories exist to explain the dynamics of this pattern; however, we still do not know the mechanism responsible. Almost all of the present theories suggest that the movement of water could be a major driver of the landscape’s features. The permafrost and frost action, the gradual down-slope slipping, and expansion of peat, the merging of hollows, and fire outbreaks are also considered to be potential factors. Further research is going on to deeply understand the complex relation between abiotic and biotic factors influencing how the string fens take shape.

Vegetation in string fens differs between strings and flarks. Strings are dominated by sedges like Carex exilis, Trichophorum cespitosum, Eriophorum angustifolium, and dwarf birches (Betula glandulosa). On the other hand, flarks or ponds are dominated by Menyanthes trifoliata (also known as bogbean), depending on the level of the water within the ground. The peat moss Sphagnum subfulvum is found on strings while a different species of moss Sphagnum majus can be found on floating mats, at the margin of ponds.

This type of peatland is abundant in the boreal regions of the world, and its predominance can be explained by cooler weather conditions, that limit Sphagnum growth and foster greater surface water flow, especially when the snow melts in the spring.

I encountered this beauty on a field trip during summer of 2016 when I was looking for fens burned by natural wildfires. Unfortunately (or not) this one did not burn, even though all the forests at the margin of the peatland burned pretty heavily. Indeed, the ground of the burned forests was covered by Polytrichum strictum, a pioneer moss known to colonize burned forests or peatland soils (look for the apple green vegetation in the bottom of the photograph).

By Mélina Guêné-Nanchen, Laval University, Québec, Canada

Imaggeo is the EGU’s online open access geosciences image repository. All geoscientists (and others) can submit their photographs and videos to this repository and, since it is open access, these images can be used for free by scientists for their presentations or publications, by educators and the general public, and some images can even be used freely for commercial purposes. Photographers also retain full rights of use, as Imaggeo images are licensed and distributed by the EGU under a Creative Commons licence. Submit your photos at http://imaggeo.egu.eu/upload/.