Model:Landslides: Difference between revisions

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Latest revision as of 19:17, 16 September 2020



Landslides


Metadata

Also known as
Model type Single
Model part of larger framework LandLab
Note on status model
Date note status model
Incorporated models or components:
Spatial dimensions 2D
Spatial extent Regional-Scale, Landscape-Scale, Watershed-Scale
Model domain Terrestrial, Human dimensions
One-line model description Landlab component that simulates landslide probability of failure as well as mean relative wetness and probability of saturation.
Extended model description Relative wetness and factor-of-safety are based on the infinite slope stability model driven by topographic and soils inputs and recharge provided by user as inputs to the component. For each node, component simulates mean relative wetness as well as the probability of saturation based on Monte Carlo simulation of relative wetness where the probability is the number of iterations with relative wetness >= 1.0 divided by the number of iterations. Probability of failure for each node is also simulated in the Monte Carlo simulation as the number of iterations with factor-of-safety <= 1.0 divided by the number of iterations.
Keywords:

landslides, hazards,

Name Ronda Strauch
Type of contact Model developer
Institute / Organization
Postal address 1
Postal address 2
Town / City Seattle
Postal code 98195
State
Country United States
Email address https://github.com/RondaStrauchURIs of the form "https://github.com/RondaStrauch" are not allowed.
Phone
Fax


Supported platforms
Unix, Linux, Mac OS, Windows
Other platform
Programming language

Python

Other program language
Code optimized Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development 2017
Does model development still take place? No
If above answer is no, provide end year model development 2020
Code development status Only maintenance
When did you indicate the 'code development status'? 2020
Model availability As code
Source code availability
(Or provide future intension) 		Through web repository
Source web address https://github.com/landlab/landlab/tree/master/landlab
Source csdms web address
Program license type BSD or MIT X11
Program license type other
Memory requirements
Typical run time


Describe input parameters [[Describe input parameters model::grid: RasterModelGrid

A raster grid.

number_of_iterations: int, optional
Number of iterations to run Monte Carlo simulation (default=250).

groundwater__recharge_distribution: str, optional
single word indicating recharge distribution, either 'uniform', 'lognormal', 'lognormal_spatial,' or 'data_driven_spatial' (default='uniform')

groundwater__recharge_min_value: float, optional (mm/d)
minium groundwater recharge for 'uniform' (default=20.)

groundwater__recharge_max_value: float, optional (mm/d)
maximum groundwater recharge for 'uniform' (default=120.)

groundwater__recharge_mean: float, optional (mm/d)
mean grounwater recharge for 'lognormal' and 'lognormal_spatial' (default=None)

groundwater__recharge_standard_deviation: float, optional (mm/d)
standard deviation of grounwater recharge for 'lognormal' and 'lognormal_spatial' (default=None)

groundwater__recharge_HSD_inputs: list, optional
list of 3 dictionaries in order (default=[]) - HSD_dict {Hydrologic Source Domain (HSD) keys: recharge numpy array values}, {node IDs keys: list of HSD_Id values}, HSD_fractions {node IDS keys: list of HSD fractions values} (none) Note: this input method is a very specific one, and to use this method, one has to refer Ref 1 & Ref 2 mentioned above, as this set of inputs require rigorous pre-processing of data.

g: float, optional (m/sec^2)
acceleration due to gravity.

seed: int, optional
seed for random number generation. if seed is assigned any value other than the default value of zero, it will create different sequence. To create a certain sequence repititively, use the same value as input for seed.]]

Input format ASCII
Other input format
Describe output parameters "landslide__probability_of_failure":

{ "dtype": float, "intent": "out", "optional": False, "units": "None", "mapping": "node", "doc": "number of times FS is <=1 out of number of iterations user selected", }

"soil__density": { "dtype": float, "intent": "in", "optional": False, "units": "kg/m3", "mapping": "node", "doc": "wet bulk density of soil", }

"soil__internal_friction_angle": { "dtype": float, "intent": "in", "optional": False, "units": "degrees", "mapping": "node", "doc": "critical angle just before failure due to friction between particles", }

"soil__maximum_total_cohesion": { "dtype": float, "intent": "in", "optional": False, "units": "Pa or kg/m-s2", "mapping": "node", "doc": "maximum of combined root and soil cohesion at node", }

"soil__mean_relative_wetness": { "dtype": float, "intent": "out", "optional": False, "units": "None", "mapping": "node", "doc": "Indicator of soil wetness; relative depth perched water table within the soil layer", }

"soil__minimum_total_cohesion": { "dtype": float, "intent": "in", "optional": False, "units": "Pa or kg/m-s2", "mapping": "node", "doc": "minimum of combined root and soil cohesion at node", }

"soil__mode_total_cohesion": { "dtype": float, "intent": "in", "optional": False, "units": "Pa or kg/m-s2", "mapping": "node", "doc": "mode of combined root and soil cohesion at node", }

"soil__probability_of_saturation": { "dtype": float, "intent": "out", "optional": False, "units": "None", "mapping": "node", "doc": "number of times relative wetness is >=1 out of number of iterations user selected", }

"soil__saturated_hydraulic_conductivity": { "dtype": float, "intent": "in", "optional": False, "units": "m/day", "mapping": "node", "doc": "mode rate of water transmitted through soil - provided if transmissivity is NOT provided to calculate tranmissivity with soil depth", }

"soil__thickness": { "dtype": float, "intent": "in", "optional": False, "units": "m", "mapping": "node", "doc": "soil depth to restrictive layer", }

"soil__transmissivity": { "dtype": float, "intent": "in", "optional": False, "units": "m2/day", "mapping": "node", "doc": "mode rate of water transmitted through a unit width of saturated soil - either provided or calculated with Ksat and soil depth", }

"topographic__slope": { "dtype": float, "intent": "in", "optional": False, "units": "tan theta", "mapping": "node", "doc": "gradient of the ground surface", }

"topographic__specific_contributing_area": { "dtype": float, "intent": "in", "optional": False, "units": "m", "mapping": "node", "doc": "specific contributing (upslope area/cell face ) that drains to node", }

Output format ASCII
Other output format
Pre-processing software needed? No
Describe pre-processing software
Post-processing software needed? No
Describe post-processing software
Visualization software needed? No
If above answer is yes
Other visualization software


Describe processes represented by the model
Describe key physical parameters and equations
Describe length scale and resolution constraints
Describe time scale and resolution constraints
Describe any numerical limitations and issues


Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets
Upload test data sets if available:
Describe ideal data for testing


Do you have current or future plans for collaborating with other researchers?
Is there a manual available? No
Upload manual if available:
Model website if any https://landlab.github.io
Model forum / discussion board https://github.com/landlab/landlab/issues
Comments


This part will be filled out by CSDMS staff

OpenMI compliant Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "Code openmi compliant or not" property.
BMI compliant Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "Code IRF or not" property.
WMT component Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code CMT compliant or not" property.
PyMT component Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code PyMT compliant or not" property.
Is this a data component
Can be coupled with:
Model info
Authors
Ronda Strauch
Source code
Model citations
Nr. of publications: --
Total citations: 0
h-index: --"--" is not a number.
m-quotient: 0
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Introduction

History

References



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