scholarly journals Sedapp v2021: a nonlinear diffusion-based forward stratigraphic model for shallow marine environments

2021 ◽  
Vol 14 (8) ◽  
pp. 4925-4937
Author(s):  
Jingzhe Li ◽  
Piyang Liu ◽  
Shuyu Sun ◽  
Zhifeng Sun ◽  
Yongzhang Zhou ◽  
...  
Keyword(s):  
Sediment Supply ◽  
Marine Environments ◽  
Supply Rate ◽  
Efficient Tool ◽  
Related Function ◽  
Shallow Marine ◽  
Stratigraphic Model ◽  
Geologic Interpretation ◽  
Internal Architecture ◽  
Made In

Abstract. The formation of stratigraphy in shallow marine environments has long been an important topic within the geologic community. Although many advances have been made in the field of forward stratigraphic modeling (FSM), there are still some areas that can be improved in the existing models. In this work, the authors present our recent development and application of Sedapp, which is a new nonlinear open-source R code for FSM. This code uses an integrated depth–distance related function as the expression of the transport coefficient to underpin the FSM with more alongshore details. In addition to conventional parameters, a negative-feedback sediment supply rate and a differentiated deposition–erosion ratio were also introduced. All parameters were implemented in a nonlinear manner. Sedapp is a 2DH tool that is also capable of running 1DH scenarios. Two simplified case studies were conducted. The results showed that Sedapp not only assists in geologic interpretation but is also an efficient tool for internal architecture predictions.

scholarly journals Sedapp: a non-linear diffusion-based forward stratigraphic model for shallow marine environments

2020 ◽  
Author(s):  
Jingzhe Li ◽  
Piyang Liu ◽  
Shuyu Sun ◽  
Zhifeng Sun ◽  
Yongzhang Zhou ◽  
...  
Keyword(s):  
Sediment Supply ◽  
Marine Environments ◽  
Linear Diffusion ◽  
Related Function ◽  
Shallow Marine ◽  
Stratigraphic Model ◽  
Non Linear ◽  
Geologic Interpretation ◽  
Linear Manner ◽  
Made In

Abstract. The formation of stratigraphy in shallow marine environments has long been an important topic within the geologic community. Although many advances have been made in the field of forward stratigraphic modelling (FSM), there are still some shortcomings to the existing models. In this work, the authors present our recent development and application of Sedapp: a new non-linear open-source R code for FSM. This code uses an integrated depth-distance related function as the expression of the transport coefficient to underpin the FSM with more along-shore details. In addition to conventional parameters, a negative-feedback sediment supply rate and a differentiated deposition-erosion ratio were also introduced. All parameters were implemented in a non-linear manner. Sedapp is a 3D (2DH) tool while also capable of 2D (1DH) scenarios. Two simplified case studies were conducted. The results show that Sedapp can not only assist in geologic interpretation, but is also an efficient tool for internal architecture predictions.

Effects of microalgal communities on reflectance spectra of carbonate sediments in subtidal optically shallow marine environments

2003 ◽  
Vol 48 (1part2) ◽  
pp. 535-546 ◽  
Author(s):  
F. Carol Stephens ◽  
Eric M. Louchard ◽  
R. Pamela Reid ◽  
Robert A. Maffione
Keyword(s):  
Reflectance Spectra ◽  
Carbonate Sediments ◽  
Marine Environments ◽  
Shallow Marine

Middle Ordovician Fish-bearing Beds from the St. Lawrence Lowlands of Quebec

1973 ◽  
Vol 10 (6) ◽  
pp. 954-960 ◽  
Author(s):  
Leslie S. Eliuk
Keyword(s):  
Lower Portion ◽  
Quebec City ◽  
Marine Environments ◽  
European Standard ◽  
Shallow Marine ◽  
Vertebrate Fauna ◽  
Middle Ordovician ◽  
Fish Remains ◽  
Black River Group

Ostracoderm tubercles were recovered from the lower portion of two Black River Group sections between Montreal and Quebec City. Some of these fish remains seem identical to tubercles of Astraspis desiderata from the Harding Sandstone of Colorado. The age of the Quebec remains is questionably earliest Blackriveran or basal Caradocian of the European standard. The remains were found in sandy carbonates probably laid down in the supratidal to shallow marine environments. It is concluded that these remains may represent part of a continent-wide, biostratigraphically useful vertebrate fauna and that bulk sampling and acid residuing might be a technique whereby sparse, fragmentary, earliest Paleozoic fish remains could be found.

Seismic Lithofacies for Static Model Building and STOIIP Calculation in Bioturbated Shallow Marine Environments

2018 ◽  
Author(s):  
Saira Bannu Baharuddin ◽  
Hani Abul Khair ◽  
Reza Amarullah Bekti ◽  
Amita Mohd Ali ◽  
Budi Kantaatmadja ◽  
...  
Keyword(s):  
Model Building ◽  
Static Model ◽  
Marine Environments ◽  
Shallow Marine

Leisure Activities in Marine Environments

2020 ◽  
Author(s):  
Professor John Swarbrooke
Keyword(s):  
South Africa ◽  
Marine Environment ◽  
Leisure Activities ◽  
Risk Level ◽  
Marine Environments ◽  
Coastal Tourism ◽  
The Past ◽  
Made In

In recent years we have seen a veritable ‘explosion’ in the use of the sea for a growing variety of marine leisure activities. This is now a truly global phenomenon that can be seen from Iceland to South Africa, Australia to Florida. Activities in the sea have always been part of coastal tourism, from paddling and swimming to sailing and diving to angling and boat trips. However, in the past decade or two we have seen the invention of new activities and the developments of variations on traditional marine activities. We now have coasteering, wild swimming, paddle-boarding, RIB and banana boats and sea kayaking, all giving tourists further opportunities to get pleasure from the marine environment. Many of these activities also reflect a change in marine leisure with an increase in active rather than passive activities and an increase in adventure activities. This has, inevitably, increased the risk level of sea-based leisure activities in some ways. Several of the more adventurous new activities also involve travelling further from land or to less developed areas of coast, increasing the risk further. Interestingly, it appears that many tourists become ‘hooked’ on some sea-based leisure activities once they have experienced them on vacation. From that point onwards their desire to continue to participate in an activity will often influence their choice of vacation destination. The innovative developments we have seen in terms of sea-based leisure activities have led to a huge increase in participation in marine leisure activities. This has been stimulated by, and reflected in, the investment made in equipment and infrastructure for such activities by governments, commercial operators, and hotels and resorts.

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