scholarly journals Bazhenov horizon of Siberia (Tithonian – Lower Berriasian): tectonic and hydrodynamic conditions of sedimentation

Georesursy ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 117-128
Author(s):  
Aleksandr N. Stafeev ◽  
Antonina V. Stoupakova ◽  
Anna A. Suslova ◽  
Rinar M. Gilaev ◽  
Egor S. Shelkov ◽  
...  
Keyword(s):  
The Arctic ◽  
Lake Basin ◽  
Nutrient Sources ◽  
Sea Levels ◽  
Rising Sea Levels ◽  
Bazhenov Horizon ◽  
Lower Berriasian ◽  
Almost All ◽  
Favorable Conditions ◽  
Biophilic Elements

The new model of the sedimentation of the Bazhenov Formation, on which black shale accumulated on relative elevation – a shallow-marine hilly plateau, agrees well with the results of a general paleogeographic analysis of the Bazhenov horizon of Siberia. In addition to the favorable conditions for the accumulation and fossilization of organic matter, the most important conditions for the formation of a unique Bazhenov suite are the multiplicity of nutrient sources, their constant flow, and the capture of almost all the terrigenous material in the flow basins of the Ural-Khatanga strike-slip. Judging by the presence of incisions and the distribution of facies in the system of strke-slip basins, a sea current from the Arctic Ocean operated on the territory of the YeniseiKhatanga trough. Periodic changes of the Arctic runoff were probably synchronous episodes of tectonic activation in the divergent shear zone. Rising sea levels led to flooding of the hilly‑lake South-Taimyr coastal basin and increasing the flow of sedimentary material from it. During the transgressions, nutrients were removed from flooded plains of South Taimyr. At the same time, the transgressions “locked” the flow from the Vilyui alluvial-lake basin. During regressions, on the contrary, the runoff of sedimentary material and biophilic elements from Vilyui sharply increased.

scholarly journals Szósta katastrofa – wyniszczenie w dobie człowieka

2020 ◽  
Vol 17 ◽  
pp. 184-200
Author(s):  
Marcin Łubiński ◽  
Keyword(s):  
Climate Change ◽  
Human Activity ◽  
Industrial Revolution ◽  
Homo Sapiens ◽  
Human Species ◽  
Sea Levels ◽  
The World ◽  
Rising Sea Levels ◽  
Almost All ◽  
Future Consequences

As the scientists indicate in their analyzes, about 60% of vertebrates on Earth have extinct since the industrial revolution. The inevitable climate catastrophe in the coming decades will bring even more noticeable damage. Due to the pres-ence of the human species in the world and its unrestrained expansion, the eff ects of Homo sapiens activity aff ect almost all ecosystems. Snowless winters, rising sea levels or extremely high temperatures are symptoms of a disaster that we are unable to ignore. This article briefl y discusses the most signifi cant threats to ecosystem services, the eff ects of careless human activity, and their current as well as future consequences, broken down into individual “sectors” of human activity. The current geopolitical situation regarding climate change and its impact on the world will also be presented. This article is mainly based on the 2019 IPBES report and reports from WWF and other entities dealing with climate change.

The features of land development and construction in the Arctic region, taking into account the dynamics of climatic changes

2021 ◽  
pp. 425-431
Author(s):  
G.I. Bykova ◽  
M.A. Grippas
Keyword(s):  
Climate Change ◽  
Land Development ◽  
Arctic Region ◽  
Coastal Areas ◽  
The Arctic ◽  
Arctic Seas ◽  
Sea Levels ◽  
Rising Sea Levels ◽  
The Cost ◽  
The Arctic Region

The article reflects the specifics of land development and construction in the Arctic North. It is necessary to use climate information effectively to select the best solutions and to avoid undue overestimation of the cost of facilities, increased heat loss, low heat resistance and strength affecting overspending. Recent trends in the context of dynamic climate change leading to rising sea levels, and possible flooding of coastal areas of the Arctic Seas are considered in this paper. The authors underline a great danger to infrastructure in result of possible destruction of coastal areas. English version of the article is available at URL: https://panor.ru/articles/peculiarities-of-land-development-and-construction-in-the-arctic-region-given-the-dynamics-of-climate-change/64263.html

scholarly journals Anthropogenic sediment starvation forces tidal dominance in a mega-delta

2020 ◽  
Author(s):  
Grigorios Vasilopoulos ◽  
Quan Quan ◽  
Daniel Parsons ◽  
Stephen Darby ◽  
Van Tri ◽  
...  
Keyword(s):  
Sea Level ◽  
Mekong Delta ◽  
Driving Factors ◽  
Climate Change Scenarios ◽  
Recent Past ◽  
Sea Levels ◽  
River Deltas ◽  
Major River ◽  
Rising Sea Levels ◽  
Almost All

Abstract The world’s major river deltas provide bountiful ecosystem services to hundreds of millions of people1,2, but there are widespread concerns that their ability to support these critical functions is being threatened by increases in salinity and the extent of tidal zones3, forced by sea-level rise4. Changes in the position of the fluvial-marine interface are governed not only by climate-driven sea-level rise, but by other factors including variations in river discharge and channel geometry5,6. However, the relative contributions of different driving factors to shifting tidal extent remains unconstrained. Here we use new field data and hydrodynamic modelling to quantify the influence of these different driving factors on accelerating tidal extension in the Mekong delta, both for the recent past and projected into the future under a range of policy, regulation and climate change scenarios. Our results indicate that, within the next two decades, tidal extension into the delta will increase by up to 56 km due to channel deepening, primarily driven by anthropogenic sediment starvation, which accounts for almost all (92%) of this incursion. Eustatically rising sea-levels are found to contribute only modestly. These findings will be transferable to other large sediment starved deltas that are facing similar challenges.

An Imperial Disaster

2018 ◽  
Author(s):  
Benjamin Kingsbury
Keyword(s):  
Natural Disasters ◽  
Bay Of Bengal ◽  
Full Moon ◽  
Economic Power ◽  
Sea Levels ◽  
Natural Event ◽  
Cholera Epidemic ◽  
British Rule ◽  
Great Rivers ◽  
Rising Sea Levels

The storm came on the night of 31 October. It was a full moon, and the tides were at their peak; the great rivers of eastern Bengal were flowing high and fast to the sea. In the early hours the inhabitants of the coast and islands were overtaken by an immense wave from the Bay of Bengal — a wall of water that reached a height of 40 feet in some places. The wave swept away everything in its path, drowning around 215,000 people. At least another 100,000 died in the cholera epidemic and famine that followed. It was the worst calamity of its kind in recorded history. Such events are often described as "natural disasters." This book turns that interpretation on its head, showing that the cyclone of 1876 was not simply a "natural" event, but one shaped by all-too-human patterns of exploitation and inequality — by divisions within Bengali society, and the enormous disparities of political and economic power that characterized British rule on the subcontinent. With Bangladesh facing rising sea levels and stronger, more frequent storms, there is every reason now to revisit this terrible calamity.

Potential impacts of global warming on water resources in southern California

2003 ◽  
Vol 47 (7-8) ◽  
pp. 165-168 ◽  
Author(s):  
M. Beuhler
Keyword(s):  
Global Warming ◽  
Surface Water ◽  
Water Resources ◽  
Southern California ◽  
Salt Water ◽  
Scenario Planning ◽  
Potential Range ◽  
Water Supplies ◽  
Sea Levels ◽  
Rising Sea Levels

Global warming will have a significant impact on water resources within the 20 to 30-year planning period of many water projects. Arid and semi-arid regions such as Southern California are especially vulnerable to anticipated negative impacts of global warming on water resources. Long-range water facility planning must consider global climate change in the recommended mix of new facilities needed to meet future water requirements. The generally accepted impacts of global warming include increased temperature, rising sea levels, more frequent and severe floods and droughts, and a shift from snowfall to rain. Precipitation changes are more difficult to predict. For Southern California, these impacts will be especially severe on surface water supplies. Additionally, rising sea levels will exacerbate salt-water intrusion into freshwater and impact the quality of surface water supplies. Integrated water resources planning is emerging as a tool to develop water supplies and demand management strategies that are less vulnerable to the impacts of global warming. These tools include water conservation, reclamation, conjunctive use of surface and groundwater and desalination of brackish water and possibly seawater. Additionally, planning for future water needs should include explicit consideration of the potential range of global warming impacts through techniques such as scenario planning.

scholarly journals Effects of climate change on spatiotemporal patterns of tropical cyclone tracks and their implications for coastal agriculture in Myanmar

2021 ◽  
Author(s):  
Akira Hirano
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Considerable Increase ◽  
Hot Spot ◽  
Coastal Region ◽  
Storm Surges ◽  
Coastal Areas ◽  
Spatiotemporal Patterns ◽  
Sea Levels ◽  
Rising Sea Levels

AbstractImportant aspects for understanding the effects of climate change on tropical cyclones (TCs) are the frequency of TCs and their tracking patterns. Coastal areas are increasingly threatened by rising sea levels and associated storm surges brought on by TCs. Rice production in Myanmar relies strongly on low-lying coastal areas. This study aims to provide insights into the effects of global warming on TCs and the implications for sustainable development in vulnerable coastal areas in Myanmar. Using TC records from the International Best Track Archive for Climate Stewardship dataset during the 30-year period from 1983 to 2012, a hot spot analysis based on Getis-Ord (Gi*) statistics was conducted to identify the spatiotemporal patterns of TC tracks along the coast of Myanmar. The results revealed notable changes in some areas along the central to southern coasts during the study period. These included a considerable increase in TC tracks (p value < 0.01) near the Ayeyarwady Delta coast, otherwise known as “the rice bowl” of the nation. This finding aligns with trends in published studies and reinforced the observed trends with spatial statistics. With the intensification of TCs due to global warming, such a significant increase in TC experiences near the major rice-producing coastal region raises concerns about future agricultural sustainability.

Peculiarities of land development and construction in the Arctic region, given the dynamics of climate change

2021 ◽  
pp. 1-7
Author(s):  
G.I. Bykova ◽  
M.A. Grippas
Keyword(s):  
Climate Change ◽  
Land Development ◽  
Arctic Region ◽  
The Arctic ◽  
Capital Investments ◽  
Arctic Seas ◽  
Sea Levels ◽  
Recent Trends ◽  
Effective Use ◽  
Great Danger

The article covers the specifics of land development and construction in the Arctic North. This requires the effective use of climate information to select optimal solutions for preventing unjustified overpricing of facilities, increased heat loss, low thermal resistance, and durability, affecting the overspending of capital investments. Recent trends in dynamic climate change leading to rising global sea levels, which could flood coastal areas of the Arctic seas, are considered. This can come along with the destruction of the coastal area and pose a great danger to infrastructure facilities.

scholarly journals Rising sea levels alter Earth's spin

Nature ◽  
2015 ◽  
Vol 528 (7582) ◽  
pp. 310-310
Keyword(s):  
Sea Levels ◽  
Rising Sea Levels
Sign in / Sign up

Export Citation Format

Share Document